Potential FCC Special Temporary Authority (STA) or Part 5 (Experimental) License to Allow Full Speed Use of IP400 on the US 420-450 MHz Band

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Potential FCC Special Temporary Authority (STA) or Part 5 (Experimental) License to Allow Full Speed Use of IP400 on the US 420-450 MHz Band

For background, see the posting on the IP400 email list - https://groups.io/g/ip400/message/155.

This potential STA is only relevant to US Amateur Radio Operators.

This form is to collect names, callsigns, some basic relevant information of those potentially interested in being included in a potential Special Temporary Authority (STA) to the US FCC to allow STA participants to operate IP400 beyond these current limits in the US Part 97 Amateur Radio regulations:

> 56,000 symbols / second and bandwidth
> 100 kHz bandwidth (channel size)

on the US Amateur Radio 420-450 MHz band.

This would allow IP400 devices to run at "full speed", which as the case in all other countries (which don't don't have symbol rate or bandwidth limitations in the Amateur Radio 420-450 MHz band). Example - Canada (where IP400 is being developed) does not have such limitations.

There is no definite timeframe for applying for this STA, and such an STA may not even be possible. Thus please be patient.

Followup on this STA will be conduducted in the IP400 email list - https://groups.io/g/ip400.

This information is being collected and collated by Steve Stroh N8GNJ solely for the purposes stated above. If there is no STA submitted to the FCC, this information will be deleted.

Steve Stroh N8GNJ

Last updated 2025-08-16

First Name?

Last Name? *

Callsign? *

License Class?

(Might be required by FCC.)

Technician

General

Advanced

Extra

Clear selection

City *

Nearest Major City?

State / Territory *

ZIP Code

Grid Square

Are you located North, or South of Line A?

(For reference, see https://wiki.radioreference.com/index.php/Line_A)

If North of Line A, use of 420-430 MHz isn't allowed.

If South of Line A, use of 420-430 MHz is allowed.

I'm North of Line A (and will not be using 420-430 MHz for IP400 testing).

I'm South of Line A (and might choose to use 420-430 MHz for IP400 for testing).

Clear selection

Email address? *

Mobile Phone Number? Please use this format: 123-456-7890

(Not required, but preferred. This is to allow quick notification if FCC were to terminate the STA. Would probably be used only for text messages.)

When approximately would you start experimenting with IP400?

As soon as I can get my hands on one or more IP400 devices.

Slowly - I'm still thinking about it / want to study IP400 a bit more.

Clear selection

Your method of experimentations with IP400?

Just do testing on my desktop, demonstration at club meeting, etc.

Stick it up on a tower or other high location (like a Meshtastic relay node).

Other:

Are you part of a group that would work together on testing and deploying IP400 nodes?

Just me

Part of a Group

Clear selection

If you're part of a group that intends to experiment with IP400, provide the name of the group and the group's overall interest in IP400.

If you're part of a group that intends to experiment with IP400, is your group interested in experimenting with a REPEATER version of IP400?

(The repeater would be modified to relay IP400 data in addition to voice modes.)

Any additional information you'd like to share?

Submit

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