Top 20 Ranger Communications RCI-6900F-25 CB Radio - Page 5 Questions & Answers

• You run your Ranger on FM? FM use Full Modulation. It puts everything that radio has in the way of power as soon as you key down (No "Swing.") In fact FM on a Ranger is pointless because the frequencies on FM that are available on the Ranger are CW only unless you are using Sideband with FM on say 28.400 USB but you said SB was fine. If you put that radio on FM and key down you are lucky your radio is even working at all and this could be part of your problem.
• As for this problem on AM, you could have weakened things when keying on FM. You could have fried the Audio Chip. Could have a bad crystal. Could have a shorted transistor.
• Any mods been done to this radio? Is there an Echo Board inside this radio? Is the radio new? New to you? Have you opened the radio at all? If not, open it and see if the chip itself is getting hot of something else.

Tony

there is a store in Heidenheimer, TX they do repairs. you can do a google search for cb shop temple, tx... its the one on hwy 95 & Fm 93, whatever you do, don't goto exit 306 shop they will over charge by 90% markup.... the one on hwy 95 in temple,tx will have the best prices in the state. guaranteed they are open from 5pm till evening not sure when they close. Mon-Fri. and call them for saturdays and sunday hours.

they have connex 3300hp w/blue led for $198+tax
rk 56 mics $39.99+tax
astatic 636L $19.95 + tax
wilson 1000mag ant $74.99+tax
these are the every day prices that i have seen while in there

Needs more mods. Try everyone you hear about. That should fix it up.

HI, my name is John. See if it has low volume with a external speaker plugged in, if ok, replace your speaker in radio. Let me know and I will post the procedure here. ...hope this was very helpful...

Red to + battery and black to - battery.
Antenna on roof or trunk lid. (Roof is best).

Go to the RCI WEBSITE and get the manual. It tells how to use them.
[email protected]

the voltage controlled oscillator (VCO) is out of alignment.

HI,
I would guess that you have a bad audio chip or a bad component in the audio circuit ( most likely the chip ). I am assuming, from your discription that the sound is muffled? If you are infact getting bleedover from other channels, you may have a bad crystal or a bad PLL Chip. I hope this has helped.
Ed ( Radio Man )
NC Electronic
Mills, Wyoming
307-266-4675

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Wiring a fridge thermostat typically involves connecting the thermostat to the power source and the compressor. Here's a general guide for wiring a 3-pin thermostat:

1. Identify the Pins: The thermostat will typically have three pins labeled 4, 6, and 3.
2. Connect the Power Source: Pin 4 is usually the common (C) terminal, which connects to the power source. This could be the live wire from your electrical supply.
3. Connect the Compressor: Pin 6 is often the normally open (NO) terminal, which connects to the compressor. This allows power to flow to the compressor when the temperature rises above the set threshold.
4. Ground Connection: Pin 3 is commonly the ground (GND) terminal. This should be connected to the ground wire for safety purposes.

All questions need FULL 'make model (what it is) first 3 words please. Something to do with this? The serial number should on the label on the rear by the mains cable. This is a statutory requirement unless someone removed it to hide its identity. https://www.google.com/search?q=KPG-790 ..

There are some ideas here, but also make sure Squelch isn't all the way up, that you aren't on some type of mute and that the Volume isn't at Zero. https://www.google.com/search?q=two-way+radio+transmits+but+does+not+receive https://www.google.com/search?q=KEM+P29923 ..

This question edited for clarity. Contents of correction Question added here and Deleted. Did you read the Manual? It looks like it has Volume Buttons on the side and may be set to Zero volume? https://www.motorolasolutions.com/en_us/support.html https://www.motorolasolutions.com/en_us/products/two-way-radios/analog-business-radios/portable-radios/bpr40.html#tabproductinfo ..

Usually black wires are used for chassis ground.

Question edited for clarity, add maker and toss in some CAPS. The site does not do well on abbreviations 'CPS' - Customer Programming Software? https://www.google.com/search?q=mcs2000+UHF+2+CPS https://www.google.com/search?q=Motorola+mcs2000+UHF+2+reset+button ..

See following diagram. I think it is carbon type microphone and seems same as required by you. Wire color codes are Black and Red are switch to enable audio circuitry on remote device (Push to Talk Switch, Usually in transmitters), White and Green are audio signal and shield. Print 51.TIF (2 pages) (mypicsonline.net) Roadking 5640 require dynamic type microphone. Radio Code Definitions; Specifications - ROAD KING RK5640 Owner's Manual [Page 17] ' ManualsLib

It depends on what model.

Unfortunately, it is not available anywhere. https://www.google.com/search?q=%22teltronics+M4000%22+programming+cable+pinout ..