Pyramid ps-21k power supply

OK... LOOKS like this is a 'vintage' CB Radio??

Some recommend just a 3 AMP 12 volt supply BUT PLEASE don't settle for that! I will highly recommend THESE BETTER SUPPLIES instead!

Pyramid PS8KK and/or PS9KK Power Supply! (sorry about the CAPS)

Because EACH TIME YOU TRANSMIT ~ there is a 'instant' current DEMAND of FIVE AMPS! A THREE AMP supply will "sag" in output voltage and AMPS under that load.

So each time you transmit your supply stressesfrom that 'hit' of 5 AMP demand... not good for a 3 amp supply.

And as your supply tries to recover, THAT could cause a voltage "spike" that can be quite destructive.

With CB radios and other items, it's best to have that extra cushion (if you will) of 'reserve' amps available!

Also note the cigarette power jack? THAT can be quite handy too for other items ~ OR you can add the MALE jack to your radio power wires for quick disconnect!

Now this 6 amp supply will cost slightly more than the 3 amp versions... but it will be SO worth it in the long run ~ BECAUSE your supply will run cooler and it's ready to give you the FULL POWER when you need it most.



https://www.rakuten.com/search/Pyramid%20PS8KX

Pyramid 6 Amp Power Supply PS8KX eBay

ANTHONY

Have you set it up properly ? Consult instruction book. If you are certain it is defective, get a refund under the warranty (if it's new it should still be under guarantee)
18.January.2015.

Scotty; I need more power!
Recommend contacting a local car audio professional or Pyramid customer support directly here:

http://www.pyramidcaraudio.com/ContactUs.aspx

not enoghf power in

what in pin order mainboar connector liteon ps5301-08hf

Might want to read this

http://www.eham.net/reviews/detail/3442

try changing the battery out

If you need further help, reach me via phone at https://www.6ya.com/expert/david_eb7ea98642566cc6

check the resistors that bias the transistors, and also any zeners connected to them.

The wires should just attach to the red and black terminals on the radio, strip some wire unscrew the terminals a little wrap behind, and tighten again. Good luck! Or buy some banana plugs and they will plug right in the front

thank you for your help . I have already fixed the power supply I double checked the transisters and found three bad so I replaced all the power transisters and it is fine . thanks again bob