Affordable Pro-level Cavity Filter

[coral condor]

Just wanted to let folks know that we’ve been designing a cavity filter (ideal for high elevation + clear LoS nodes, router/repeater ideally) using standard slot 20 (906.875mhz). Of course, it's retunable if you have a good VNA to another center frequency. (Or contact me if you have another frequency need to see what we can do)

https://shop.airframes.io/products/lora-915mhz-filter

We’re still testing our samples, but it’s quite promising with about 1.6dB of IL. While keeping a narrow 4mhz wide filtering. Not selling yet, but you can be notified. Ideal with a Station G2 (so you can put this on the receive antenna side).

We run a few router nodes and we’re starting to test them with our samples over the next week. We expect signal fidelity to greatly increase to hear more distant nodes while blocking out of band better than a typical band pass. Will update folks if we find that they're actually helpful. Most pro-grade cavity filters are in the hundreds or thousands of dollars, but we're making these at almost our cost for the community. Wanting to see a better mesh, especially at the router level.

Thanks for the recommendation @oblique charm

[oblique charm]

Can you go into detail on the station g2 comment?

you seem to imply the Station G2 has discreet tx and rx antennas, which it doesn't

and it already has a good filter, at least if your not concenred about things in a fairly broad range between 800-ish to 950-ish. I hooked up a cavity filter on my G2 and didn't see much of a difference in SNR, but that was with a relatively quiet RF environment. I would be curious to try this though with its tigher passband

[coral condor]

Sorry to imply that, it definitely only has a single antenna connector.

For those running routers, the Station G2 benefits due to increased gains to counter the 1.6-2.0 IL of the cavity filter. But the cavity filter provides a much more narrow input, making the RF very silent so that the G2 can shine.

We are going to test this exact scenario when our samples arrive on Monday. But also when our G2's arrive.

[oblique charm]

Ive had a g2 for about a month. Its a good device.

Its convenient to be able to push a bit of extra power to overcome insertion loss

That said, i have noticed that the node is loud and deaf. Maybe this will help with an additional LNA in the path

[coral condor]

Yeah, the IL is not that much more than a typical bandpass with worse cutoff

[tame bronze]

A familiar name!

If I wasn’t flying right now I’d totally post a photo of one of my airframes stickers lol

[coral condor]

WOW what? 🙂

At this point, MUST see a photo of it

[tame bronze]

As soon as I get home on Sunday.

[coral condor]

I can't wait

No, literally, cannot wait.

j/k 🙂

[coral condor]

One more day 😛

[tame bronze]

Sorry, I ended up not getting home until Monday and then honestly forgot about it 😬

[coral condor]

Woo hoo!

[tame bronze]

I have the SDR Enthusiasts ones too.

Great stickers!

I just saw the MeshAddicts/MeshInfo project, that looks pretty cool. Might have to set that up for my area.

[coral condor]

Yeah, I had a lot of fun getting them made for all the projects and into people's hands.

[coral condor]

Awesome! Let me know how it works out for you.

[coral condor]

If you need any help with anything, let us know. We are adding features pretty rapidly, so the config is bound to get confusing or not clear.

[coral condor]

Also, preorders are now live for the cavity filters! https://shop.airframes.io/products/lora-915mhz-filter

[coral condor]

Batch #1 is sold out, and batch #2 is getting close to being sold out.

[coral condor]

Batch #2 is about gone. Will be opening up Batch #3 soon (but won't deliver until further out).

[coral condor]

Batch #2 of preorders of the cavity filter have been filled. Batch #3 is now open, price increased by $10 (batch #4 will likely increase as well). Also, will have a status update for batch #1 soon!

[coral condor]

UPDATE:

We are mostly on track.

Reminder: we already had a sample batch (4 units) that tested incredibly well. A +20 SNR in practical tests.

The first batch ships from manufacturer to Hawaii on the 27th to be reviewed and QCed. About 7-8 days to arrive and perform QC. Then they will be direct shipped to each around the 3rd or 4th. Shipping in US via USPS flat rate actually usually only takes 2-3 days (but sometimes 5). I'll also send out an email update about this directly. If there's any delay, I'll also be sure to update.

The second batch will likely deliver early. And the third batch also most likely ship early (assuming orders for batch are completed soon - https://shop.airframes.io/products/lora-915mhz-filter). The price will be increased for batch #4 (incentive to get into batch #3).

Will have updates when more information is known.

[coral condor]

Batch #3 is coming along... will soon be totally allocated (prices are going up for batch #4).

[coral condor]

Batch #1 is starting to see shipments (we are right on track, batch #2 will be early, manufacturer has started).

[topaz zephyr]

I might have to pick one up... but only if my filter is QC checked by Lothar of the Hill People

BTW, slightly unrelated.. do you also do UHF cavity duplexers?

[coral condor]

No duplexers... yet.

[topaz zephyr]

Drop me a line when you do decide to offer them.. I've been wanting to do a 900mhz portable repeater

[coral condor]

I suppose you could use two of these cavity filters. Though that might not be exactly what you are wanting.

[coral condor]

Most of batch #1 is being delivered to folks today. Already hearing from a few!

[hot cloak]

Just got mine in and setting it up meeooowwwww!

[topaz jetty]

Got mine today. Its connected to a Station G2 and RAK outdoor antenna. Seems to be working nicely. Linking to nodes from 4 - 14 miles away.

[coral condor]

Are you somewhat low (relative) elevation? Do you have strong LoS to some distant nodes? Curious to hear about continued use.

[idle cobalt]

In hand! Literally!

I will have to see if I have all the right adapters to make this work with my current node on the roof rather than something new. But I think that’s got an ipex to n type.

[quartz grail]

Woohoo! Got mine today!!

[idle cobalt]

https://www.linkedin.com/feed/update/urn:li:activity:7238006603692589056?utm_source=share&utm_medium=member_ios

[topaz jetty]

I have fair LOS to a few hillside locations. Two new nodes tonight.
I am in the city at 300ft above SL. One hill node is at 700ft the other is about 800ft. @ 4.2 and 14 miles respectively. I regularly contact a third hill @ 1400ft, that is 24 miles away. No contact tonight . I think their battery is dead. It will likely get replaced tomorrow. I will update signal info from that node since I have previous history.

[coral condor]

Great!

Anyone have before/after measurements (SNR, etc) yet?

[eager tundra]

man this cavity filter is so much better than the SAW chip filter i was testing

this was my saw filter

and this is the cavity filter, same testing session, parameters, calibration

[idle cobalt]

damnnnnnnn

[idle cobalt]

White is effectively the signal received through the filter, correct? Showing that basically you get that sweet signal through at 906 and everything drops into oblivion

[eager tundra]

yeah I'm not an expert with vnas but the way i understand it is the white is measuring across the ports

and red measures how much power is able to leave the s11 port

[coral condor]

Batch #1 has been completely delivered early (except for a single order that is still in transit).
Batch #2 is in progress by the manufacturer and will likely deliver ahead of schedule.
Batch #3 is still available for order (and will go to manufacturer once it closes) and will delivery early if it closes in the next week or two.
Batch #4 will increase in price and will open when batch #3 closes.

[feral dome]

Those VNA results convinced me lol just placed an order!

@coral condor If the default channels shifts closer to the middle of the band in V3 do you think it be possible to re-tune with a NanoVNA?

[eager tundra]

IDK that nanoVNAs have the precision and refresh rate required to do it

if i ever have to retune mine I'm going to see if someone in my local ham club could help me

[coral condor]

What @eager tundra said. You can wing it, but ultimately you’re not going to do too well with it. Consumer VNAs are good to get ballpark, but fine tuning will have issues.

[coral condor]

Super sharp looking!

[eager tundra]

can't wait to get the g2

then some custom cables that are EXACTLY the right lengths

[coral condor]

The station g2 is fantastic. You will love it. @urban cave killed it!

The only tiny thing it is missing (for me) is PoE (and of course wired Ethernet) and then it would be the perfect router/repeater ever!

But as is, it’s the best already.

[eager tundra]

oh wow we have Neil in this chat huh

yeah its an awesome unit thats why I'm getting another

[coral condor]

I def plan to get a couple more.

[eager tundra]

hoping toro becomes the #1 meshtastic node in the area

g2+filter+alfa antenna

[idle cobalt]

https://www.youtube.com/shorts/BZGZ2dhWvUM

I was.... having fun

[eager tundra]

hah nice

[coral condor]

So cool 🙂

[coral condor]

Batch #1 has been completely delivered early (last week).
Batch #2 is in progress by the manufacturer and will be shipped out to us tomorrow (Thursday). Target was Oct 1st to begin shipping to customers, but it will likely arrive early.
Batch #3 is sold out and we are notifying the manufacturer to begin. This will also likely arrive early, before the original target of Nov 1st.
Batch #4 is open (and was raised $10). Targeting shipments out by Dec 1st. Not clear if it will be early or not (depends on when the batch closes).
Batch #5 will be targeting Jan 1st.

[blissful cradle]

Yes, I hope a future Station G3 has PoE and some selector wheel for selecting premade responses.

[eager tundra]

@coral condor @urban cave G2 and cavity filter, basically a match made in heaven

[coral condor]

I love the mount!

[eager tundra]

not 100% sold on how it glues but i guess you dont even need the glue if you have a zip tie

[exotic juniper]

Beeyootifool

[eager tundra]

i've got some custom coax cable assemblies on order that are the exact length

[coral condor]

Giving away 5 uses of coupon code MESH5OFF for $5 off the preorder of the Meshtastic 906.875mhz cavity filter.
https://shop.airframes.io/products/lora-915mhz-filter

[coral condor]

https://youtube.com/shorts/Dba6tz9dSbQ?si=NEwquuW3xV1I_ack

[coral condor]

Batch #1 and #2 are in people's hands. Batch #3 has been submitted and should be in the country for quality control in the next week or so.

[coral condor]

Batch #3 are starting to arrive in people's hands. Batch #4 just sold out and will be submitted to manufacturer. Batch #5 has been opened.

https://www.youtube.com/watch?v=Dx7HYiACw2k

[empty scroll]

Just ordered mine on batch #5, Cant wait to get it, its going in a mountain peak node.

[coral condor]

Batch #5 is now SOLD OUT!
Batch #6 is now open for purchase.

[coral condor]

#1303196065528287322 message

[hot cloak]

After 2 months of having this bad boy I deffinatly notice the filter helping when I am downtown and at my location in orangevale /folsom i have alot of traffic going through my node and I noticed my map would populate alittle better with the filter on for overnight compared to not take up alittle more space than im.used to but it leaved more room for a bigger case and more things !

[coral condor]

Batch #6 is almost sold out. Only a few units left for this batch before we open up batch #7.

[coral condor]

Also, there is some circulation of eBay listing https://www.ebay.com/itm/126694067822 which happens to be a rejected batch (original batch #2 that we emailed folks about, and tossed because out of advertised specs) -- this is sold by our hardware partner, but it's not identical. It's not trash, but it's definitely not as narrow, and has greater insertion loss. That might be OK with some folks, but just wanted to be transparent. (Trevor and I are talking with that person about making it more clear in their listing)

[coral condor]

We are temporarily halting preorders. This is because we want to catch up on the last two batches, while also looking at finding ways to reduce costs for everyone.

[topaz jetty]

Hi, Are you sharing the print file for the Filter/G2 mount?

[eager tundra]

still revising it but we're probably going to be selling them

we've also got a version for the g2 without the filter, and we're doing external wifi/bluetooth antenna mods on G2s as well

[topaz jetty]

Thanks for the update.

[nimble latch]

I'm curious about the bluetooth mod

[eager tundra]

@nimble latch

myself and another guy are going to be selling modded G2's or I can tell you how to attempt it

we modded and tested one today, bluetooth was working great at 150 feet

this little kit is an SMC quick disconnect with a 2.4 antenna and it gets soldered onto the wifi/bt module

[coral condor]

Hoping some of you loyalists will join in the fun -- #1101431882886942801 message

[copper dune]

When is the next batch coming out?

[summer zephyr]

Came here to ask that question as well. Any next batch info?

[lone crown]

How does this amp work w/ the Station G2 and built in amp ?

[copper dune]

It’s not an amp it’s a filter that only allows 906.875 mhz signals

@coral condor Do you have an ETA for the next batch?

[lone crown]

Ah, ok..

Not sure why I thought this was an amp.. LOL

[coral condor]

Hey!

Yes, the factory is making batch #5 right now.

Batch #6 should start @ factory at the very beginning of January.

I think the Xmas holiday will be a pain in the ass for shipping in general, but we are on track for beating our estimates (as we have previously).

Next batches are not yet clear, but we will update you here shortly when it is open again! We are trying to find ways to reduce cost. Current signs are that factory wants to raise costs, plus other issues, but it is our intention to find ways to reduce.

Other things impacting upcoming batch #7 and beyond will be the Chinese holiday season starting in the second half of January.

In the meantime... while you wait...

I'd like to offer the Meshtastic community a discount on domain registrations or transfers to Zuffix (https://zuffix.com), get it, "suffix", the ICANN-accredited domain registrar I co-own. Come support 🙂

A very true example of David vs Goliath.

Coupon code MESHBUDZ5 for 5% off .com, .net, .org, and .io for new registrations or transfers in.

Deal ends Jan 1st, 2025.

[exotic juniper]

Where are you manufacturing?

[coral condor]

China is where the manufacturer is.

Batch #5 is on the way to us. We'll Q/C and ship shortly after.

[exotic juniper]

Chinese New Year is end of January. Hope you can get batch 6 before they batten down the hatches 😬😁

[summer zephyr]

How many do you need for a batch?

[coral condor]

16

[coral condor]

Just to note, we're still committed to making the most affordable and most performing filter. Our vendor has been raising prices. Trevor and I are working to find the best solution for balancing amazing and accurate filters and cost effectiveness.

Our goal is to keep costs as low as possible for the community without creating liabilities.

At the moment we're trying to keep the current manufacturer, but the costs have been rising, and we find this to be unacceptable.

Just because it's popular doesn't mean it should increase in price. So give us a few weeks so we can find the right solution for the next batches.

[lone crown]

I hate when manufacturers do that shit...

[steady valley]

If it makes you feel any better @coral condor … the cavity filters we had custom made at work ended up $500 each … so yours are lookin pretty good still 🤓

[coral condor]

❤️ You def understand!

BTW -- we're receiving batch #5 tomorrow and will test each one to ensure within spec and will be shipping out!

[steady valley]

What frequency? I’m getting filters on 914.875 for our medium slow build out. 🤓

[coral condor]

LF

906.875

[coral condor]

Batch #5 !!!

[coral condor]

Batch #5 is in everyone's hands. Batch #6 has been Q/C'd and packaged up, and going out the door tomorrow.

I'm going to open batch 7 of the Airframes cavity filter tomorrow.

[coral condor]

Annnnnnd, preorders back open! Go go go.
https://shop.airframes.io/products/lora-915mhz-filter

[nimble latch]

Ordered

[coral condor]

Batch #7 sold out. Batch #8 opened.

[coral condor]

Heads up, batch #8 is sold out, and we just opened batch #9. Our recommendation if you are planning to buy is to get in sooner than later to get them faster.

Note that we expect each batch to deliver sooner than expected, but we like to keep some buffer there (for example, our manufacturer goes on a 1 week holiday coming up, or for any Q/C issues with a batch).

And as a reminder, we are doing this for the community to produce high-quality professional grade cavity filters at a reasonable cost (go price out similar grade cavity filters for other applications and you'll easily see them for $300-600, or more). To keep prices low, we're taking very little profit after all the expenses (manufacturer, Q/C and packaging of each unit, store fees and plugins, taxes, etc), and any profit that does result goes to benefit the Airframes project (see: https://app.airframes.io/about to learn more about Airframes).

https://shop.airframes.io/products/lora-915mhz-filter

[coral condor]

Tomorrow is cavity filter batch #6 delivery day. Most should get them by EOD.

[steady valley]

do you email out tracking ? I may be in a later batch but just curious

[coral condor]

Yep!

Check your original email, it mentions which batch you are.

[coral condor]

Most of batch #6 delivered to customers (a few more today and next couple of days). Batch #7 is being manufactured. Batch #9 almost sold out (only a couple of units left) and will open batch #10.

Hint: For those of you who have received units, for each verified review (i.e. review is from same email address as has been ordered with previously) you leave at https://shop.airframes.io/products/lora-915mhz-filter (or any other purchased product) -- there's a Write a review button down the page, you will get a one-time 5% discount code to be used on anything ordered from the Airframes Shop, including additional cavity filters. Keep the reviews honest, not asking for great ratings (though I believe it deserves it) in exchange for the discount.

[coral condor]

Batch #9 sold out. Batch #10 has been opened for preorders.

[coral condor]

Batch #10 sold out. Batch #11 has been opened!

[coral condor]

Batch #11 is close to being sold out.

[coral condor]

Batch #11 sold out, and batch #12 has been opened for preorder.

[empty scroll]

Quick question, there has been some back and forth on what gets connected to what port, any way you can confirm this for us?

[coral condor]

Yes, understandable. Both ports are essentially synonymous for RX (receive), but one side is slightly biased for VSWR for TX (transmit). Either way works fine, however, ideal is:

• INPUT: Device (Station G2, etc)
• OUTPUT: Antenna
  I updated the listing to reflect this as well.

[coral condor]

Batch #12 sold out, and batch #13 has been opened for preorder.

[coral condor]

Batch #7 has been shipped and delivered.
Batch #8, originally scheduled for end of March delivery, has been received, Q/C’d and is being shipped today.
Batch #9 and #10 will be shipping earlier than originally scheduled as well, soon (will update here).

Tariffs are coming, so future batches will have to increase a bit. Will know more soon.

[coral condor]

HUGE UPDATE:

Everything is coming along, but we paused preorders again because we are waiting on actual numbers for the new tariffs. We cannot take new orders without knowing what per-unit this might cost.

We already charged folks for the upcoming 11/12/13 batches, which will likely be affected but we will likely not get funds from folks.

This means we are either:

1. going to have to eat it
2. refund everyone
3. ask everyone for more

At the very worst case, we may ask existing orders to supply the increase (if any). This is hard for us to ask existing orders for more than they already committed, so I am thinking we may just cover it (essentially breaking entirely even) but this also feels potentially difficult. And it's pretty unfair considering we are not making much of a profit to begin with since we started doing this to help the community -- and the "profit" goes to Airframes (https://airframes.io), which is a community effort to begin with.

Give us another week or two to understand the impact.

Obviously, this increase is not coming from ourselves, but it's just the reality of the new tariff world.

[lethal blade]

helllo @coral condor I'm somewhere in batch #12 - did the tariffs end up being an issue? Happy to go with option 3 if it keeps order on track

[zinc verge]

I need two if you open pre orders again.

[mossy oyster]

Is wholesale available ? if so MOQ ?

[mossy oyster]

5 right now

[lethal blade]

@coral condor any updates?

[coral condor]

Sorry for delay. Tariffs are bad. Still trying to see true impact, but as of now it’s not good at all.

[urban cave]

After Trump claimed that tariffs might be reduced, China eliminated all tariffs on US chip imports into China quietly, so we can get chips from companies such as TI, ADI, etc. for manufacturing.😂 BTW, this makes the sales representatives of Chinese and European analog chip companies in China very unhappy. They have prepared a large amount of inventory and have already increased the price.

[coral condor]

Yeah, the situation is quite troubling 😐

[coral condor]

Heads up. Tariffs worse and yes, still there. Hanging on for now.

[copper dune]

@coral condor Any update with the temporary tariff reduction?

[coral condor]

No measurable update. The short info is that the tariffs keep moving, and even though we have a 90-day 30% window, that means an actual loss to deliver any at this price, with zero guarantee that inter or post 90 day we have no changes.

As someone only literally doing this for the community and making no reasonable profit, I am not willing to take anymore risk than necessary to deliver any product under these conditions.

All that said -- I still want to make this happen -- but I need stability in the international market before I can comment further.

Goal is to continue delivering -- but I cannot state when/how quite yet.

[oblique charm]

I sympathise for you regarding the issues that tarriffs have caused, however, not even having any ETA is unacceptable. I placed an order for two of these filters somewhere around Feb or March, expecting a delivery sometime in May.

Please work towards completing the current order backlog, or if it's no longer financially viable at the original price, and in a reasonable time frame, please cancel and fully refund orders.

[shadow adder]

How do those that haven't received the product yet request a refund? It's almost impossible to reach anyone through the website.

[coral condor]

I wish I had had a crystal ball and I'd have never made these filters. We've been doing this as a favor to the community (i.e. not making a profit, and any that went over was just to support the Airframes project) and the damn tariffs really put a kink into things over the last 2 months. The tariff rates kept changing week to week, eventually up to 145% and now closer to 50% (though it varies depending on batch size and classification.

That makes it impossible to commit funds and receive batches. Surely people can understand that 145% is not only unacceptable but insane. And 50% is not only unsustainable, but impossible to continue on at these prices (they whole purpose here was to keep the price down when traditionally filters of this quality were $300-500 -- often more).

Those that we will fulfill, we'll be swallowing the cost of the tariffs (and this will dip into my personal pocket to cover). Those that want refunds instead will be entitled. Though since I have a batch commitment, we'll still be paying out of pocket (of course even more so, since I will have to cover the entirety of the units rather than the tariff overage).

Of course, customers think we're a typical business and we have the budget and profitability but don't understand we were just doing this as a community effort. That's fine, I get it, it's annoying to wait while not seeing the funds.

End of day, this isn't worth the effort, time, or cost to do, so after we fulfill these batches (and/or refund anyone that wants a refund), we will most likely not be taking future orders. Time will tell, especially if the tariff situation gets better.

[coral condor]

If you want to wait, batches are coming. If you want to cancel and get a refund, please email [email protected]. There will be some delay as I am transfering in personal funds to cover refunds as we already committed the funds to manufacture.

[oblique charm]

Do you have any guess on the timeline at this point?

[coral condor]

We have a batch in manufacturing as we speak. The other two batches should follow shortly (presumably the following weeks).

[oblique charm]

Please add an option to the shop to "buy" the extra tariff costs

(or whatever makes the most sense)

[urban cave]

FYI, we sent a batch of Station G2 to the US in the middle of this month at the original price to test the logistics with prepaid tariffs. No profit is considered. The package has now arrived at the US customs and is waiting for customs clearance.

We tested two logistics services and currently the flight time from China to the United States is normal. Even faster, maybe the planes are relatively empty because I think most merchants may still be suspending shipments to the United States. We hope that the customs clearance time is not significantly delayed due to tariffs.

The logistics costs have increased several times compared to before the tariffs. About the tariff, what I heared it the lowest tariff is at least 45%, depending on the customs' judgment of the product category. That is, before the product passes through US customs, we don't actually know the exact amount of the tariff:) The logistics company will collect customs duties in advance and refund or supplement according to the actual customs duties incurred.

[lethal blade]

@coral condor seriously, count me in as a batch 12 buyer who will cover the tariff delta - just let me know how and where to plus up the $. Not your fault and this was clearly a hobbyist thing not some enterprise activity… having to go /negative/ on these is obscene

[coral condor]

If you are serious, DM me with your order email and I'll accomodate and prioritize. I actually have 6 units ready to ship out.

[coral condor]

Like @oblique charm, DM me with your order email and I'll accomodate and prioritize. I have a few units outside of the standard batches and will send with the adjusted.

Consider yourselves line skippers... ignore the line throwing eye darts at you!

[coral condor]

https://tenor.com/view/whoischelsea-bullseye-chelsea-twitch-gif-449768727441765945

[lethal blade]

DM sent!

[oblique charm]

sent

[coral condor]

Just finished Q/C for batch 11. Tomorrow it ships out!

[coral condor]

Batch 11 has been shipped. Batches 12/13 are inbound from manufacturing. I'll update here once we receive and Q/C them.

[shadow adder]

Any fresh updates?

[coral condor]

Waiting on batch 12 and 13 to arrive together. Should be soon!

[shadow adder]

Thank you.

[oblique charm]

Is it soon yet? 😄

[shadow adder]

I'm ready for it to be soon!

[lone crown]

https://tenor.com/view/dog-husky-soon-gif-7801078

[shadow adder]

Like deliver on Monday soon?

[lone crown]

Not a clue. I have nothing to do with them.

[shadow adder]

You commented, so I took a chance. 😆

[coral condor]

Hey everyone! Batch 12 is about to ship. We're in the middle of Q/Cing the units.

Batch 13 is not far behind (technically very soon after)

[shadow adder]

Are you in possession of batch 13 already? Thanks for the update.

[mellow rapids]

When is the next order window?

[coral condor]

Yes, we have physical possession. Batch 13 hasn't been tested yet, but will go out not long after 12 (a matter of days).

[coral condor]

We are still gauging next window. We will announce something soon after our primary focus -- batches 12/1 3 -- are out the door (with some likelihood that future batches will ship significantly faster now too). A big event our eyes are on is the 90-day window that Trump has given to the current rates. When that expires, we need to see if it will drop or rise. We do not want to be stuck with preorders at today's price but tomorrow's cost like we had to do with batches 10-13 (which we desided to swallow and not pass through).

[shadow adder]

Thanks

[coral condor]

Shipping update -- Batch 12 and some of Batch 13 (we had some extras) have been Q/C'd and are being shipped out today!

Also, we will most likely be opening up preorders again now that we are getting caught up -- and these next batches will be larger, be received more quickly, and be shipped out to end users much more quickly. We will share in the tariff cost, so there might be some increase in price (working out the final details). But the good news is that due to increase in batch size and turnaround from the manufacturer, we should be able to turn them around very quickly (2-3 weeks).

At least until the tariffs change again in July/August.

[shadow adder]

Awesome! Do you generally email out tracking numbers once they ship?

[simple kernel]

@coral condor Glad to hear that production has been sorted, looking forward to preorders!

Do you happen to have a .step file for your filter?

[coral condor]

Yes, all shipped orders will get tracking numbers emailed!

[coral condor]

I do not have a .step file available, but I can see what we can do.

[simple kernel]

Thank you for your reply and for looking into it!

[lethal blade]

That would be great as I’d like to print some mounts for various enclosures

[empty scroll]

Is this not it?

I have the step if you are okay with me releasing it.

[shadow adder]

I'd also love the file.

[empty scroll]

No worries, I just want to make sure he is okay with it, and I will post and tag.

@simple kernel @shadow adder So I could not for the life of me remember where I got this file from, (I thought it was here) and did some digging around and located the post that is still up. #1303196065528287322 message.

[shadow adder]

Perfect, thank you!

[simple kernel]

You are awesome, thank you so much for your help and link!

[coral condor]

It looks about right to me. Not sure about the dimensions, etc.

[empty scroll]

They are pretty spot on, I have used this to build some things for the filter. 👍

[coral condor]

We're soon to be done with the Q/C of batch 13 and start shipping those. We caught two issues during batch 12/13 Q/C which is why we manually test each unit (and this costs us to do), but it ensures that units are going out with sanity.

That will have gotten us caught up. We'll be re-opening the preorders soon, with larger batch sizes and faster delivery. Stay tuned!

[coral condor]

Do us a couple of favors to ensure the next batches go well:

1. If you have purchased a cavity filter and appreciate having it, please write a helpful review (Go to https://shop.airframes.io/products/lora-915mhz-filter -- login if you're not so it can verify your purchase -- then click the Write a review button at the bottom of this product page) -- people that leave a verified review also get a 5% discount on future orders

2. Let others know we're about to open preorders -- we'd like to make the next batch large and quick and the more people we can fill at once the faster this will happen for the next batches. The more that are queued up to put in preorders, the faster we can deliver on this next set of rounds.

3. The next orders will allow you to choose between common frequencies (LongFast, MediumFast, MediumSlow, Meshcore @ xxx, etc) for your preorder, not just 906.875mhz! If you have a special request, now is the time to put it in here. We will only be putting up the most requested frequencies available for order, not unique customs (though we might consider this in the future for an added one-off price), so if your suggestion is not included on this batch as available to order, it might be in the future.

Thank you!

[red ingot]

Just to check in are preorders already closed? Not a spot for preorders anymore, unless it’s part of the top banner.

Arizona has been using the longfast tuned area ones with success on medium fast. We would love the ability to get filters tuned more for medium fast to assist on the towers we have.

The wait times are not an issue for us, completely understand the hurdles

[oblique charm]

they aren't open yet

[lethal blade]

Woohoo. Batch 12 unit in hand! Thanks @coral condor

[empty scroll]

Hello friend, do you by any chance have the files for this posted somewhere? Thanks in advance!

[eager tundra]

I think it's this one

https://www.amazon.com/dp/B0CG98RWL2 should be the case, in size 7.4"x4.7"x3.0"

you'll want 2x M4x8mm screws to attach the bracket to the case, and 8x M4x12mm screws to assemble the bracket together. you will also need 8x m4 nuts and 16x m4 washers (optional I guess but a good idea)

[empty scroll]

🙏thank you very much, I appreciate it!

[shadow adder]

Has 13 been shipped?

[coral condor]

Some of batch 13 has gone out. More is about to go out. We also have batch 14 en route which hasn't even be opened for sale yet. We are about to open up larger batches for sale, including various frequencies (LongFast, MediumSlow, and others including common for Meshcore, etc).

If there's a specific frequency you want for this +-2mhz (i.e. 4mhz wide) cavity filter, now is the time to make the request. Though we can expand this over time. We have made arrangements with our manufacturer to do mixed frequency batches.

[coral condor]

@here Several versions of the Airframes/Lothar cavity filter are now available for order for batch #14. We are making the size of batches ongoing much larger, and they are also factoring in the increases from tariffs. We expect these to ship much more quickly than recently!

Meshtastic - US - LongFast - 906.875mhz
Meshtastic - US - MediumSlow - 914.875mhz
Meshtastic - US - MediumFast - 913.125mhz
Meshcore - US - 910.525mhz

Preorder for batch #14/15 is available NOW
https://shop.airframes.io/products/lora-915mhz-filter

[oblique charm]

Has the rest of 13 shipped? I haven’t seen any notifications

Im blind, you just posted this

[valid shoal]

Nice, got one preordered

[coral condor]

Initial orders are decent! Looks like batch 14 will be 906.875 entirely while batch 15 will be various. This is only because we have batch 13 and 14 on hand already (some of 13 already delivered, the rest of 13 and 14 are being Q/C'd and pending delivery), which means what would have been 14 is now 15, except for those ordering 906.875. We had preordered batch 14 as all 906.875 since that was our only focus previous. Future batches will be mixed-frequency orders (and quite dynamic).

[coral condor]

Heads up! The remainder of batch 13 and all of batch 14 will be going out shortly.

[oblique charm]

Should i have received any kind of shipping info?

[shadow adder]

What does "shortly" mean?

[oblique charm]

@coral condor I'm done waiting. Please just refund my order.

Order # 1263

[coral condor]

The last of the backorders are going out the door today, and we have units to start fulfilling some of the new preorders we've captured over the last 1-2 weeks as well.

[coral condor]

Cancelled. Sorry to see you go, but thanks for hanging in as long as you did.

[valid shoal]

😭

[simple kernel]

Received, thank you! 🙏

[valid shoal]

Mine is out for delivery today also!

[orchid cave]

Hello, recently placed a pre-order for a couple of these. Is there a status update on the current batch?

[coral condor]

A whole bunch of them are going out this weekend! Some went out yesterday in fact. Will have a better update over the next day or so.

And a little surprise -- we have made efforts to improve the overall design and performance! -- Anyone getting the current shipments and beyond will receive these enhancements.

[valid shoal]

😭

[orchid cave]

Awesome, I'm in batch 14, can't wait!

[orchid cave]

@coral condor Is there an INPUT and OUTPUT side to these filters? I just recieved mine but am getting some inconsistent results. Can I DM you and see if we can figure it out?

[coral condor]

Hey Ryan! Glad you received. The input/output sides are actually identical as the filter is incredibly balanced. A future version of the filter will actually no longer mark input/output. This is typically only important when multiplexing, but this is not an issue for this filter.

[odd minnow]

My order from Sept 23 says batch 14 but if I’m understanding this right I should be matching it to the batch 15 status (“manufacturing”)? No rush just curious on the status.

[coral condor]

Hi Alec, yeah it looks like that is going out in batch 16 for LongFast (batch 15 is already sent out, which we will update on the site). We expect to receive batch 16 for Q/C in the next week. We're trying to beat Nov 1 tariff hike possibilities.

[odd minnow]

Okay good to know, thanks for following up!

[coral condor]

Today we're shipping out all batch #1 910.525mhz (MeshCore US), 913.125 (Meshtastic MediumFast), and 914.875 (MediumSlow) orders.

[coral condor]

I'll update you here once I have more clarity on exact dates!

[coral condor]

We're waiting on the next batch of LongFasts, but we have:

• 13 x Meshtastic - US - MediumFast - 913.125mhz
• 1 x MeshCore - US - 910.525mhz
  IN STOCK right now. Any order of either of these will result in immediate shipping (within 24 hours).

[ocean night]

How much is the Meshcore US 915.525 one? @coral condor

[empty scroll]

Here is the site with the pricing. https://shop.airframes.io/products/lora-915mhz-filter?variant=51455745261868

[ocean night]

Thanks!

[exotic juniper]

How many units you make in a single batch? Must be a job to assemble all of them... 🤌🏻

[odd minnow]

Afraid I probably beat you to it

[coral condor]

It varies between types and demand. We're not ordering in bulk enough to make this highly profitable, but just enough to sustain. We can't take the risk to hugely batch it. But we're definitely ordering larger batches for LongFast.

Plus the constant tariff change situation makes things uncomfortable for (at least me).

[exotic juniper]

Yeah I can understand!

[lethal blade]

Did you order any custom Slot 9 filters? *correct freq courtesy of jess3000 below

[wispy sedge]

Long_fast slot 9 is 904.125 in the US, I would be interested in for this frequency if they were able to be made. This non standard channel is used by the large Northern Virginia Mesh