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My DX99V Receives and transmits OK, but RX s-meter does not move, TX meter is OK. Also I have no squelch control. Any one able to help? MudDuck DownUnder.

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  • 219 Answers

Meter could be bad or needs to be cleaned, and sounds like you have a bad soilder in there.

Posted on Nov 21, 2009

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1 Answer

Rx symbol is displayed all the time and will not switch off.


It sounds like you have CTCSS (tone squelch) or DCS (Digital coded squelch) turned on, but the normal squelch setting is set too low. This will stop scanning, and as the radio thinks there is a valid signal, it will not transmit. I have no idea what radio you are using, but this is a common situation with modern radio's.

Mar 04, 2015 | Radio Communications

1 Answer

Stuck on rx mode


Rx is an abbreviation for receive. (Tx is transmit) There are a variety of reasons a radio will be "stuck" in Rx:
1) Another radio in the group is stuck in transmit and you cannot reply if your radio is receiving the other radios transmission.
2) Your radio is programmed for Rx only.
3) Your radio has a Tx problem such as a bad mic, or something covering the mic opening.
4) Your battery is low or bad. It takes more energy to Tx than to Rx.

Best regards.

Feb 07, 2014 | Cobra LI3900-2DXVP (14 Channels) 2-Way...

2 Answers

Cobra 19 classic


I would open up the radio and look for burnt traces, primarily by the output transistor and near where the power comes in. If you have another radio near by (within several feet) and it transmits on the same channel that your radio is on, can you hear it?? If you transmit on your radio, does the working one hear you? If you open your squelch, does it make noise?? If you transmit, does the RF power meter go up?? If any of these questions are YES, then there is a good possibility that your ANTENNA SWITCHING diodes are shorted or open. The TX diode is probably open and your RX diode is shorted. OR both. If the other radio is hearing you, and you are hearing the other radio, then the radio section is very likely OK. The diodes switching the antenna between RX and TX often fail, especially if there has been a lightning strike in the vicinity. It doesn't matter if your radio is on or not, or if you have a surge protector, a nearby lighting strike can take these diodes out.

If you don't have as much as a Channel number coming up on your radio, then the problem is most lkely somewhere in the radios internal power supply.

Jan 29, 2014 | Radio Communications

1 Answer

Wx works but no cb tx or rx


Antenna good? Receive meter move at all? radio show transmit when key mic? more you tell me the better I can help---I will assume you know enough to make sure RF gain and squelch are set correctly.

and cb/pa in right position........

Apr 27, 2012 | Radio Communications

2 Answers

Cobra 18 wx st receives-wont transmit


Take the cover off, flip it over solder side up, check all solder joints for cracks, cold solder joints, check the safety diode where it comes in the radio, before I go further, can you pick up the weather channel?...Does the PA work?...need to check the pre-driver and finals,audio chip, hook up the power meter using a coax three foot jumper from the output from radio to the input of the watt meter, then the antenna, first check the SWR, on the scale on the meter to cal/swr mode,adjust it to spec, then while still keyed down turn the dial to SWR,if it is the safe range your ok,then turn the Dial to 10 or 20 watt scale and key the mic. Does it have any wattage? If not suspect the finals, they are located on the back rail, if it does have RF then its the audio chip, its located on the right side rail facing you,closest to you.remove it and replace it with same ....hope this helps....

May 21, 2010 | Cobra 18 WX ST 40-Channels Base CB Radio

1 Answer

Please send me Canon Ir all model Error code. How can solve it?


Error codes for iR2016i,2020i for other machines codes you need to get the specific manual, these manuals can be downloaded from Ebay, look for user ID ultimate_sacrifice A seller on Ebay.
No. Tx/Rx Description
##0100 [Tx] at time of transmission, the procedural signal has been transmitted more than
specified.
##0101 [Tx/Rx] the modem speed does not match that of the other party.
##0102 [Tx] at time of transmission, fall-back cannot be used.
##0103 [Rx] at time of reception, EOL cannot be detected for 5 sec (15 sec if CBT).
##0104 [Tx] at time of transmission, RTN or PIN is received.
##0106 [Rx] at time of reception, the procedural signal is received for 6 sec while in wait for the
signal.
##0107 [Rx] at time of reception, the transmitting party cannot use fall-back.
##0109 [Tx] at time of transmission, a signal other than DIS, DTC, FTT, CFR, or CRP is
received, and the procedural signal has been sent more than specified.
##0111 [Tx/Rx] memory error has occurred.
##0114 [Rx] at time of reception, RTN is transmitted.
##0200 [Rx] at time of reception, no image carrier is detected for 5 sec.
##0201 [Tx/Rx] DCN is received outside the normal parity procedure.
##0220 [Tx/Rx] system error (main program out of control) has occurred.
##0232 [Tx] encoding error has occurred.
##0237 [Rx] decoding error has occurred.
##0261 [Tx/Rx] system error has occurred.
##0280 [Tx] at time of transmission, the procedural signal has been transmitted more than
specified.
##0281 [Tx] at time of transmission, the procedural signal has been transmitted more than
specified.
##0282 [Tx] at time of transmission, the procedural signal has been transmitted more than
specified.
##0283 [Tx] at time of transmission, the procedural signal has been transmitted more than
specified.
##0284 [Tx] at time of transmission, DCN is received after transmission of TCF.
##0285 [Tx] at time of transmission, DCN is received after transmission of EOP.
##0286 [Tx] at time of transmission, DCN is received after transmission of EOM.
##0287 [Tx] at time of transmission DCN is received after transmission of MPS.
##0288 [Tx] after transmission of EOP, a signal other than PIN, PIP, MCF, RTP, or RTN has
been received.
##0289 [Tx] after transmission of EOM, a signal other than PIN, PIP, MCF, RTP, or RTN has
been received.
##0290 [Tx] after transmission of MPS, a signal other than PIN, PIP, MCF, RTP, or RTN has
been received.
##0670 [Tx] at time of V.8 late start, the V.8 ability of DIS front the receiving party is expected
to be detected, and the CI signal is expected to be transmitted in response; however,
the procedure fails to advance, and the line is released because of T1 time-out.
##0671 [Rx] at time of V.8 arrival, procedure fails to move to phase 2 after detection of CM
signal from caller, causing T1 time-out and releasing line
##0672 [Tx] at time of V.34 transmission, a shift in procedure from phase 2 to phase 3 and
thereafter stops, causing the machine to release the line and suffer T1 timeout.

Dec 12, 2009 | Office Equipment & Supplies

2 Answers

How to adjust frequency on transmit??? Galaxy


hELLO THERE
hERE IS SOME MODIFICATIONS FOR THIS RADIO
Galaxy Mods DX 2527 - VR 1....AM/FM S-Meter, VR 2....SSB S-Meter, VR 3....SSB Squelch Range, VR 4....AM/FM Squelch Range, VR 7....SSB Carrier Balance, VR 8....RF Meter, VR11...Driver Bias, VR12...SSB ALC, VR13...Hi Power, VR14...AMC, VR15...AM Low Power, VR16...SSB Low Power, VC 1....10.240, VC 2....10.240. DX 2517- VR 1....AM/FM S-Meter, VR 2....SSB S-Meter, VR 3....SSB Squelch Range, VR 4....AM/FM Squelch Range, VR 5....FM Deviation, VR 6....SSB Carrier Balance, VR 7....TX Offset, VR 8....CW Beep Level, VR 9....RF Meter, VR10...Final Bias, VR11...Final Bias, VR12...Driver Bias, VR13...SSB ALC, VR14...AM/FM High Power, VR15...AM Modulation Meter, VR16...AM Modulation, VR17...SSB Power, VR18...AM/FM Low Power, VR601..13.8 Volt Power Supply. DX 22B- VR 1....AM/FM S-Meter, VR 2....SSB S-Meter, VR 3....SSB Squelch Range, VR 4....AM/FM Squelch Range, VR 7....SSB Carrier Balance, VR 8....RF Meter, VR11...Driver Bias, VR12...SSB ALC, VR13...High Power, VR14...AMC, VR15...AM Low Power, VR16...SSB Low Power, VR21...TX Offset, VC 1....10.240, VC 2....10.240. DX 11B- VR 1....AM/FM S-Meter, VR 2....SSB/CW S-Meter, VR 3....SSB Squelch Range, VR 4....AM/FM Squelch Range, VR 5.....FM Deviation, VR 7....SSB Carrier Balance, VR 8....RF Meter, VR10...Final Bias, VR11...Driver Bias, VR12...SSB ALC, VR13...AM/FM High Power, VR14...AM Modulation, VR16...CW Tone Level, VR20...Final Bias, VR21...TX Offset, VR601..13.8 Volt Power Supply, VR803..AM/FM Low Power. DX 77HML, DX 88HL, and DX 99V- VR 1....AM/FM S-Meter, VR 2....SSB S-Meter, VR 3....SSB Squelch Range, VR 4....AM/FM Squelch Range, VR 5.....FM Deviation, VR 7....SSB Carrier Balance, VR 8....RF Meter, VR10...Final Bias, VR11...Driver Bias, VR12...SSB ALC, VR13...AM/FM High Power, VR14...AM Modulation, VR16...AM/FM Low Power, VR20...Final Bias, VR21...TX Offset.
Unmarked VR in R189..AM/FM Medium Power for DX 77HML only. DX 33HML, DX 44V, DX 55V, DX 66V, and DX 73V- VR 1....AM/FM S-Meter, VR 4....AM/FM Squelch Range, VR 5.....FM Deviation, VR 8....RF Meter, VR12...Low Power AM Modulation, VR13...AM/FM High Power, VR14...High Power AM Modulation, VR16...AM/FM Low Power.
Unmarked VR in R188..AM/FM Medium Power (DX 33HML only)
Unmarked VR in C139..Med Power AM modulation (DX 33HML only) DX 949,DX 959- VR 1....AM S-Meter, VR 2....SSB S-Meter, VR 3....SSB Squelch Range, VR 4....AM Squelch Range, VR 6.....SSB Carrier Balance, VR 7....TX Offset, VR 9....RF Meter, VR10...Final Bias, VR12...Driver Bias, VR13...SSB ALC, VR14...AM High Power, VR15...AM Modulation Meter, VR16...AM Modulation, VR17...SSB Power, VR18...AM Low Power, VC1....10.240. DX 2517 and DX 2527-
Symptom:Buzzing or motorboating sound in either the transmit or receive.
Problem: TR602 is oscillating
Cure: Replace C602 with a .01uF cap {Cap is located in the power supply board}.
RG 66,99,DX2517 Replace Q54 2SB754 60watt 7A with a higher power 2SB817 100 Watt 12A. Derating of this component will cool operation, provide better voltage stability,decrease wobble, allow voltage increase to 14.5 volts comfortably. (replace 10 volt caps in this section of the radio to a minimum of 16 volts before increasing supply voltage to this level)and provide faster swing rise time, Replace Q37 2SA473 to a 2SA1012-0 or ECG153 this will improve the clarity and volume of the modulation and it will also run a lot cooler.

Nov 12, 2009 | Galaxy Radios DX-949 40-Channels Base CB...

1 Answer

I have a cobra 25 ltd and when i key the mic the gauge of the db barley goes up. is something wrong ? also the gauge says its measuring tx power what does that actually mean/ do


TX means transmit. There are 3 settings for the meter. The top one is to measure your TX/RX that's transmit and receive. CAL is to calibrate the meter to check your SWR.

Reasons your needle may not be moving much when you key while on TX/RX. The dynamic is probably all the way down. That is your mic gain. If you turn that up when you talk the needle will swing more. If the radio is stock and not modded, you can turn this all the way up and leave it.

Also there could be something wrong with the mic. If people can hear you then its not the mic.

If people can hear you fine when you transmit, it may just be a bad meter. Not a big problem, you will just need an external meter to make sure you swr is not high.this is important because if it is over 1.5 you run the risk of blowing the final transistor.

Oct 11, 2009 | Cobra 29 LTD CB Radio

1 Answer

Microphone


Hi,

If the radio receives OK and the TX red LED will not lit up when keying the mic, then it is a mic or mic cord or mic connector problem (or pin configuration). Internally to the mic, there is a switch for keying the PTT. This should be check down to the coiled cord to the connector.

If all of the above checks OK, then you would need to check the TX/RX regulator/switching circuitry.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Jul 08, 2008 | Cobra 148 GTL 120-Channels Base CB Radio

2 Answers

Pc78 elite cb


Hi, You may want to check your PA/CB switch (should be in CB position) by moving it up and down a few times. A Cal switch if present in your model normally stands for Calibration which is a feature to measure the SWR of your antenna and should not really affect the TX/RX function of the radio. If still a no go, you may have to seek the services of a qualified radio technician or bring it back to your dealer for repair/replacement. Good luck and hopes this work out for you. Pls post again how things turn up. Kind regards.

Aug 11, 2007 | Uniden PC78ELITE 40-Channels Base CB Radio

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