[FEATURE]Disable TX on 5 MHz band for Japanese users (JARD compliance)

[jhon8807]

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Dear Richie and Thetis developers,

I am using Thetis with ANAN-100D in Japan.

According to Japanese radio regulations, amateur stations are strictly prohibited from transmitting on the 5 MHz band.
For JARD certification (Japanese radio equipment conformity), I must prove that my station can never transmit on 5 MHz.

Currently, Thetis does not provide a reliable way to permanently disable TX on 5 MHz.
Even if we set TX power to 0% or remove 5 MHz from the GUI, it is still possible to transmit by direct frequency input.

Feature Request:
Please add a function to completely disable TX in the 5.0–5.5 MHz range.
For example:

• A "Band TX Table" where each band can be set to TX enable/disable
• Or, a fixed TX inhibit (hard-coded) for 5 MHz in the "JA" regional settings

Why important:

• Japanese users need this function to comply with local regulations
• It helps us to obtain JARD certification for ANAN radios
• It avoids the risk of accidental illegal transmissions

This feature would make Thetis much safer and easier to certify in Japan.

Thank you very much for considering this request.

Takeshi AKASAKA
7exx@m.email.ne.jp
je7exx

[oldjackbob]

Tasheki,

You can create a Container and add an Led Indicator that has a Condition test that checks whether your VFO-A frequency is in a prohibited band segment and will disable TX.

I've done the same thing except mine checks to make sure I'm not trying to TX outside of the General Class licensed band edges in my region.

Mark

[w-u-2-o]

In Thetis > Setup > General > H/W Select > Region, "Japan" is a choice on the drop-down menu. Does selecting "Japan" not create appropriate band maps and lockouts? Scott/w-u-2-o

…

On Thu, Sep 18, 2025 at 11:33 AM oldjackbob ***@***.***> wrote: *oldjackbob* left a comment (ramdor/Thetis#592) <#592 (comment)> Tasheki, You can create a Container and add an Led Indicator that has a Condition test that checks whether your VFO-A frequency is in a prohibited band segment and will disable TX. I've done the same thing except mine checks to make sure I'm not trying to TX outside of the General Class licensed band edges in my region. Mark image.png (view on web) <https://github.com/user-attachments/assets/4be99576-5e02-43ca-98c0-81173d23aa3a> — Reply to this email directly, view it on GitHub <#592 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AX4YGS3ADJW3SGWZRPK5RDL3TLGEZAVCNFSM6AAAAACG3J6EESVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTGMBYGE2TMMZUHE> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[ramdor]

In Thetis > Setup > General > H/W Select > Region, "Japan" is a choice on
the drop-down menu. Does selecting "Japan" not create appropriate band maps
and lockouts?

Scott/w-u-2-o
…

It does, but can be ignored by

a) selecting different country/region
b) selecting extended

but that might not be appreciated by JARD. That said, I could add a bunch of code to check OS language version, and/or keyboard type, and lock it down ;) However, being open source, anyone could just pull that out, and re-build it.

Additionally, some of the default band stacks are a bit out of whack as well. TBH, it could all do with stripping out, from a bunch of places in the code, wrapped in a single accessor class, and the data stored in xml/json so can be amended by users as required.

R.