20 Most Recent Connex 3400HP Amateur Radio - Page 5 Questions & Answers

There are two different frequency conversions early and later radio versions
http://www.cbtricks.com/radios/connex/cx_3300_cx_3300hp/index.htm
Hope this was of help

the mixer crystal might be going bad.inside the radio look for a crystal marked 10.240 that's the.mixer crystal. you may .LTE need to replace it. some times heating it up with thetip of a soldering iron for about 10 seconds re aligns the crystal. give that a shot and see if that stops it from drifting. also make sure your clarifier is in the center.
if heating or replacing the mixer doesn't work, then it could be somethig else like, if the radio has an unlocked clarifier mod then it could have been done poorly or wrong. as well the CFO could be out of alignment.

If the radio has been modded, then it probably has a lot of audio. As well if you are using a power mic, it may be too much.

You also are probably getting some common mode current. This causes RF feed back.

Last but not least, your talk back, if you have it is probably too loud. Now I do believe you can not lower the TB in this radio. It is either on or off. If this is the case, it needs to be on a switch.

1. Adjust the gain on the radio and mic to even it out.
2. Have some one local listen to your audio to tell you if it is loud, too loud and over modulated, or not loud at all and make adjustments based off that, you may not need to go any more then 1/4.
3. Make sure the radio is properly grounded.
4. Make a 10" coil with about 6-8 wraps as close to the antenna as possible. this wills top common mode.
5. Lower or turn off talk back.
6. If it is still getting feed back, Hold the mic cord in the center, and close your hand around it. If the RF feed back stops, then you need to put ferrite chokes on the mic cord to stop the RF.
   

Yes

Hello,
Here is the wire diagram for several common mics in relation to a 4 pin CB. Most recent 4 pin CB's such as Midland, Cobra, Connex, Uniden, etc can use 4 pin mics. The wiring is actually depending on the mic rather than the CB so long as the CB's are 4 pin as well. Once you go back to late 80's the 4 pin design was a little different. Anything new it is simpler.
Stock Mic 1- Shield (Ground) 2- Yellow (Audio) 3- Red (Transmit) 4- White (Receive)
Astatic - 4 wire 1- Shield 2- White 3- Red 4- Black
static - 6 wire 1- Shield & Blue 2- White 3- Red 4- Black Yellow NC

Daiwa EM-500 Cobra CA Series 1- Shield & Black 2- Red 3- White 4- Blue
Galaxy DC-521S - 4 wire 1- Shield 2- Yellow 3- Red 4- Black
Galaxy CB-660EI 1- Shield & Black 2- White 3- Red 4- Blue
Sadelta 1- Shield 2- White 3- Brown 4- Green
Turner RK56 Road King 1- Shield & Red 2- White 3- Blue 4- Black Yellow NC
Regards, Tony

check for any loose power connections.. ground connections.. loose coax.. also make sure vehicle is on so not to drain battery down when TXing. if it was off it may have dropped battery voltage down lower than it should... and turned off.. RX doesn't use hardly any ampres..

Do it have a relay mod for the talkback if so take that thing out. use the normal talkback. We are in TX.. no charge to check out.. I would check to make sure it has just plain normal talkback, and no other mods done first.. any other mods done??

What type of power source is it hooked to? straight to car battery or some other power source? Sometimes cart alternator noise is picked up by radios. Try hooking the power source up differently

put it @ 1-5 on low and max of 10-15w on high so it doesn't kill the transistors 130 is too high.

if it pulled them off the switch you may need a new cord ?? or just get a new on they only $38.99.. well thats what we selll them for... most replacement mic cables are $14.. they someone installing.. $5... theres $20 easy.. pin 1 ground
pin 2 audio, pin 3 tx, pin 4 rx..

go to cb tricks.com. I just looked there it did not have the schematic for that radio.You can go to the galaxy radios and find the one you want.

it sould have a cord with it hook it up to your cig.liter if you must hook to battery 12 gauge wire

Hi, my name is John. Welcome to FixYa. Just lightly pull the knob off and rotate it to the channel and replace it back on. Thanks for choosing FixYa....John

A on the dial, and Low on the band is the CB band.

Hi,my name is John. Try to turn your MIC GAIN to MAX, and see what happens. Let me know if you need further help.....hope this was helpful.....Rate this solution on the four thumbs-up.......John

Hi Larry!
Try http://www.cbtricks.com/ it is free and covers many different radios...

The Band knob moves the frequency coverage from 25.615 and 28.305
The Hi-Low switch determines the lowest frequencies and highest.
Here is your owners manual.
http://www.cbtricks.com/radios/connex/cx_3300_cx_3300hp/graphics/connex_cx3300_cx3300hp_om.pdf

p.a. stands for public address,you need a pa horn for this. F.m. is for frequency modulation alot of ten meter radios offer this now it's mostly line of site communication if you have somebody else with fm though it sounds alot better. A.m. is amplitude modulation it's the standard way cb's have communicated since the beginning.I hope this helps.Good luck. Dan

It's possible (but not very likely) that the final amplifier blew out after you lost the tip of the FireStik antenna.