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whosmatt / uvmod

Web-based firmware patcher for various Quansheng radios
https://whosmatt.github.io/uvmod/
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can you make it able to transmit in FM radio signals? #13

Closed salmannn5 closed 1 year ago

salmannn5 commented 1 year ago

As a tour guide, i need an FM transmitter (88 MHz to 108MHz). at the same time i need a walkie talkie too. Can you make it possible this UV-K5 to transmit in FM Radio signals, and can be received clearly by regular radio receiver? Thank you

OneOfEleven commented 1 year ago

The radios TX chain has been designed to transmit only within the 136-174 420-470'ish range, transmitting outside of those areas has found to be a bad idea due to the large amplitude spurious carriers it produces when you try - do so at your own risk (country laws might get you found out).

Anyway, not sure if the BX radio chip will produce the level of FM deviation required by 88-108 WBFM receivers.

OneOfEleven commented 1 year ago

I can see this radio being band in certain countries (with certainty) as is (very soon too), mainly due to the air-band limit being removed - it's been a seriously bad idea to have given the morons out there the ability to transmit across the air-band (108-136), and also the higher military band.

Am glad all countries have air-band DF'ing all built in (to instantly locate lost aircraft), and so making it easy to pin point the dummies that are transmitting in the air band(s).

whosmatt commented 1 year ago

Check the instructions on UVMOD to see the hidden mods. For the same reason you stated I decided to hide TX unlock mods behind a little bit of warning and info.

On Sat, Aug 26, 2023, 10:53 OneOfEleven @.***> wrote:

I can see this radio being band in certain countries (with certainty) as is (very soon too), mainly due to the air-band limit being removed - it's been a seriously bad idea to have given the morons out there the ability to transmit across the air-band (118-136), and also the higher military band.

Am glad all countries have air-band DF'ing all built in (to instantly locate lost aircraft), and so making it easy to pin point the dummies that are transmitting in the air bands(s).

— Reply to this email directly, view it on GitHub https://github.com/whosmatt/uvmod/issues/13#issuecomment-1694233118, or unsubscribe https://github.com/notifications/unsubscribe-auth/ACSFI2454Y5ZQPNQJMZ4G6TXXG2PHANCNFSM6AAAAAA37J6YHA . You are receiving this because you are subscribed to this thread.Message ID: @.***>

whosmatt commented 1 year ago

The K5 can not really transmit on FM radio frequencies. It uses a second chip for FM radio which is receiver only. The main chip could transmit and receive on those freqs too but the bandwidth is far too low to be usable, I couldnt get it to demodulate and if you were to send on FM it would just be uselessly quiet. It would also be a very dirty transmission and way too much power, silencing many radios in a large area. Very likely illegal in your country too.

RE3CON commented 1 year ago

for fm radio the frequency modulation fm is to small with max. 24khz which is with this hardware possible. It needs different fm modulator circuide with wwfm for a greater fm hub spectrum results to be way louder than these walkie talkies can do this. You are looking for fm radio transmitters in size of a stand alone microphone with build in fm tramsmitter mostly without a fixed freq crystal made but very cheap to found on the market for range FM 88-108MHz. Maybe 8 to 12 bugs.

salmannn5 @.***> schrieb am Sa., 26. Aug. 2023, 07:28:

As a tour guide, i need an FM transmitter (88 MHz to 108MHz). at the same time i need a walkie talkie too. Can you make it possible this UV-K5 to transmit in FM Radio signals, and can be received clearly by regular radio receiver? Thank you

— Reply to this email directly, view it on GitHub https://github.com/whosmatt/uvmod/issues/13, or unsubscribe https://github.com/notifications/unsubscribe-auth/AIOBTKNIRML6VDRSIMSZGDLXXGCO5ANCNFSM6AAAAAA37J6YHA . You are receiving this because you are subscribed to this thread.Message ID: @.***>