KG-935G+ Scanning Question

[WRFP287]

Hello Friends!  I'm new to the forum and newer to GMRS radios.  I have a Wouxon KG-935G+ that I'm working on programming.  I have the GMRS part working fine.  I'm trying to set up some receive only channels for scanning and I'm seeing some behavior I didn't expect. (Could be my lack of experience with these radios.)

Here's the scenario, a department I want to listen to uses the same receive frequency with different CTCSS tones for the different areas.  For example:

Channel		Frequency		TSQL Tone
1			460.300			100.0
2			460.300			151.4

With the radio scanning and activity on channel 2, the radio will stop on channel 1 but no audio is heard.  If I manually advance the radio to channel 2 I can hear the audio.

The only behavior I have to compare this to is some Uniden scanners.  On my SDS100, using the same frequencies and tones, the scanner will not detect activity on channel 1 and will stop on channel 2.  I suspect the 935 is 'hearing' the signal on channel 1 but since the tone doesn't match the squelch does not open.

Is this expected behavior for these transceivers or am I doing something wrong?

Here is what it looks like in CHIRP:

[WRFP287]

Thanks for the reply 218!  According to the docs for CHIRP, 'Tone' applies the tone to TX only.  'TSQL' applies the tone to both TX and RX.  TX is irrelevant in this scenario though.

If I remove all tone settings, I can hear all traffic on all channels including the obnoxiously loud identifiers.  By using the tones I can not only block out the identifiers but I can lockout or skip the channels I'm not currently interested in even though they share the same RX frequency. 

Just wondering if my approach is flawed.  I know the purpose-built scanners have additional capabilities that may not be built into this type of radio.

[SteveShannon]

11 hours ago, WRHS218 said:

I have never used CHIRP but I believe the TSQL is for transmitting a tone. Try using no tone or code, just the frequency.

No, “TSQL”, means that it transmits a tone and also requires a tone to open the squelch.  “TONE” sends a tone but doesn’t require one on receive. It’s the same as leaving the tone out on receive.

[WRUU653]

I'm not sure if I'm following correctly but it sounds like the radio will stop scanning on a frequency/channel when it sees a signal regardless of if it has a tone to match and even though it stops you can't hear because the tone is not the receiving tone needed to hear. If I got that right, my thought is to work around you could only program one memory without the RX tone or put the channels of different locations in different scan groups and only scan the one area you want one at a time thus eliminating the one with the other tone from your scan. You could also set scan to TO so that it continues to scan after 5 seconds if you don't stop it. I hope I'm understanding your dilemma correctly and this helps.

[WRXB215]

@WRFP287 You are right, "Tone" leaves RX open. It sounds like a problem with the radio. I'm surprised that a Wouxon is doing that. Do you have another radio you can test with?

[WRFP287]

@WRXB215 Yes, I have another 935+ to set up.  I also have two B-Tech GMRS-V1 radios that don't seem to behave this way but I need to look at how I set up the 'scanner' channels in those.  I'll comment back on the results.

[WRYZ926]

TSQL is for setting both TX and RX tones. Or at least that how it works in CHIRP I find it easier to just use the Wouxun KG935G software downloaded from Buy Two Radios to program all of my Wouxun radios.

[WRFP287]

1 hour ago, WRYZ926 said:

TSQL is for setting both TX and RX tones. Or at least that how it works in CHIRP I find it easier to just use the Wouxun KG935G software downloaded from Buy Two Radios to program all of my Wouxun radios.

Yeah, that is what I thinking about last night... using the Wouxon software to see if there is any different behavior.

[WRFP287]

WOW!  CHIRP is soooooo much easier to use than the Wouxun software!  But... I spent the time and retyped my complete program from CHIRP to the Wouxun software for the 935G+.  The result was the same as with CHIRP.  For now I'm going to remove the tones for the 'scanner' channels and try to contact Wouxun or BuyTwoWayRadios for tech support or a bug report.  Thanks for all the input folks!

Have a Happy New Year!!

-James

[BoxCar]

TQSL sets both the transmit and receive tone to the transmit frequency. TONE sets just the transmit CTSS frequency.

[WRHS218]

I have never used CHIRP but I believe the TSQL is for transmitting a tone. Try using no tone or code, just the frequency.