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Jvc KD-LH3101 cable connections

Hi do you know how to connect cables from that radio

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When it's dry, I can't transmit, but when my antennas get wet,transmission doubles, WHY????


Hi John:
Try checking where the antenna is connected to the cable.
It may be corroded and you're not getting continuity unless it is wet.

Jan 08, 2016 | Cobra 29-LTD 29 LTD Classic CB Radio

2 Answers

Overheating when keying mike to talk


This is almost ALWAYS caused by a poor antenna connection forcing the radio to dissipate the heat generated when transmitting.
Look for an open connection from your PL-259 plug where it connects to your radio or a dead short to ground in your antenna cable.

Hope this helps
-Steve

Mar 01, 2015 | Galaxy Radios DX-33HP2 Mobile Amateur...

1 Answer

How do i adjust the sideband


Instructions

Connect one end of your coaxial cable to the output port on your SSB Transmitter. Connect the other end of the cable to the coaxial input port on your RF demodulator.

Connect one end of your 1/4 inch audio cable to the audio output port on your RF modulator. Connect the other end of the audio cable to the audio input jack on your amplifier.

Turn on your SSB transmitter, RF modulator and amplifier. Adjust your SSB transmitter modulation by adjusting the knob on your RF

Jul 22, 2012 | Ranger RCI-6900F-25 CB Radio

1 Answer

Wilson roof mount coax is broken at radio connector end


I'm going to assume you've got a PL-259 connector on the end of the coax cable - they look like this:



6_5_2012_7_45_33_pm.jpg

They are designed to screw onto the radio's RF / Antenna jack. The end shown is standard, the other end - that the cable enters, requires an insert that matches the coaxial cable outside diameter.

There are two versions of the connector; solder-less and soldered. The best connection is provided by the soldered type. It is superior both electrically and mechanically to to the solder-less version. If you lack soldering skills, patience and / or the tools and supplies to solder the connector, the solder-less version will be the way to go.

There are two types of solder-less types, a crimp and non-crimp type. They look like these:



6_5_2012_7_54_52_pm.jpg
The "Non-crimp" solderless PL-259 from Radio Shack - about $6.



6_5_2012_7_59_59_pm.jpg
A crimp type PL-259 connector - $2 and up at various radio & electronics stores.

Since this end of the antenna is at the radio and presumable protected from the elements, it may prove to work very well for you. Each of these connectors requires knowing the type cable (RG-58 and RG-8 are very popular types - but there are many other 50 ohm coax cables) or outside diameter and selecting the one that fits correctly, along with a crimping tool (and dies) for this particular connector size. You may get by with a standard pair of pliers, but the connection is not as good as would be obtained with the crimp tool. Generally, you would provide a crimp around the ferrule at the cable end for the braided conductor and another at the very tip of the connector for center conductor.

Each connector will include very specific cable preparation steps for the removal of insulating jacket, braid and dielectric material to provide proper fit of the connector to the cable. If it were a "standard", I would have included it.

Check this link for Youtube video the show how to install the various types of PL-259 connectors on cables.

I hope this helps & good luck!

Jun 05, 2012 | Radio Communications

1 Answer

The short is by the speaker wires it will transmit but the break is in the rec side of the ant


Since you said that the problem only occurs during the receive mode then there is no problem in the antenna,cause if you have a problem in the antenna,you wont receive or transmitt and it will eventually burn your output transistor.So try checking your mic cable first.Since the cable has most of stress in use due to constant movement,so do a continuity check on the cable.Open the mic handle housing and do a point to point continuity check from the connections in the mic switch to the mic plug (of the mic cord).Next check the PTT switch.If the cable has an open connection,do some soldering work to reconnect the open wire.If the PTT is not working-replace with the same part.

Feb 02, 2011 | Galaxy Radios DX-929 40-Channels Base CB...

1 Answer

Unit will not power up. no lights at all and power souce and cable has been tested with another radio.


the board may have loose connection on the voltage regulator.. if not may have blown the protection diode. IF you need help let me know.

Oct 09, 2010 | Galaxy Radios DX-959 40-Channels Base CB...

1 Answer

I have a basic 40-channel cobra cb radio and 2 four foot firestik whips mounted in the stake holes of my truck. I have dual 18 ft. coax connecting the two which is ran through 2 small holes near my door,...


You should check the coax cables for damage . ALso, did you attach the PL-259 connectors yourself to the coax cables? They can be tricky. You need to check for loose or bad connections between coax cable and connector.
Of course it could be the radio itself went bad on you. Check this with a friend; when you connect his radio to your antenna system, does everything work then? Hope this helps.

Aug 23, 2010 | Radio Communications

1 Answer

I need to know what colers go where on the mic pin for a trc 447 thank you


I don't know which mic you're trying to wire to this radio. The colors of the wires in the mic cable may change from one mic to another, so relying on the color is not reliable. Usually you refer to these connections as Pin1 to a Signal or Function; or Jack Pin1 to Plug Pin3. No one assumes a color will always be used to connect Pin1 to TX (transmit).

With that said, I found an answer on FixYa from someone that answered the question some time ago like this:

HERE IT IS THE CORRECT MIC WIRING FOR THE REALISTIC TRC 447.

1.)Audio
2.)RX
3.)TX
4.)CH.Down / Shorted to Ground
5.)Ground
6.)Ch.Up / Shorted to Pin 4

Be extremely careful when wiring this radio! pin 4 and pin 6 carry voltage shorting these to the wrong place can result in serious damage to your radio.

Lastly, since I doubt what was provided above is going to help you very much - you can review all the info ever printed by Realistic on your radio, here. There's a wealth of info on this page and you should be able to find what you're looking for in it. You're looking to find the pinouts of the radio to the pinouts of the mic.

If you ever have to disconnect a multiconductor cable from a connector, and you don't have the time or means to write the colors down, it is better to simply cut the cable - leaving all the colored insulation of wire ends soldered / still secured to the connector. When you are ready to do the replacement of the connector or cable, you've got the wiring order in place still, and can make the new connections one at a time at your leisure.

Good luck!

Aug 11, 2010 | Radio Shack TRC-447 CB Radio

2 Answers

I have a Cobra 29 LTD CB radio, when I hooked it up it will light up but sound and also the signal meter is not moving and it won?t tramit or receive. Yes the mic is hookup.


There may be an issue with the coax, antenna, connections, settings or a combination of them all.

Set the radio to AM, a channel of your choice, volume to just under 1/2 way, squelch to off or fully CCW. Make there is no plug in the ext speaker jack. If there is still no sound, try connecting an external speaker and try again.

Carefully check all connections for tightness and inspect the coax cable for evidence of being crushed, pinched, cut and jacket damage that could allow water to enter. Replace the coax cable if any of the mentioned problems are found.

Inspect the point that the antenna is connected to the mount / coax cable. It is not unusual for this area to become oxidized due to exposure to weather. Thoroughly clean or replace parts that can not be cleaned up.

Check the antenna for damage. If "higher than rated power" has been introduced to the antenna, it has likely failed, and will require replacement. Since CB is limited to 4W AM and 12W SSB, most antennas are rated for 25W or less.

You should obtain and connect an SWR meter with a short length of coax cable between the radio and the antenna. The meter should be rated for the frequency range of the transmitter - in this case, HF or 27Mhz (11 meters). Tune the antenna for lowest SWR over the range of frequencies by physically lengthening or shortening the whip in the base in 1/8" increments.

I hope this helps!

Oct 22, 2009 | Cobra 29 LTD CB Radio

1 Answer

Cb equipmebnt


Hi,

Connect the INput of the amp to the TX out of the radio. Connect the OUTput/Ant of the amp to the INput of the meter (SWR/Power). Connect the OUTput of the meter to the cable that leads to the antenna.

With this arrangement, you will be able to measure the SWR of the antenna and power output (of the amp) going to the antenna.

Hope this be of some help/idea. Pls post back how things turn out or should you need additional information.

Good luck and kind regards.

Dec 31, 2007 | Cobra 148 GTL 120-Channels Base CB Radio

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