Realistic brand CB Radio Teardown and Test


http://www.bezpieczniejszafirma.pl/
Typically that center pin in the power would be like a remote wire on a car amp and turn it on when the ignition was turned on
Radio Shack has been known to rebrand other products. We used to have a Realistic Beta HI-Fi, same exact unit as the Sanyo offering at the time. 
in 2013 about august i got some good whip with my 3foot heilcoil magnetic base
super tomcat mark2 rocking about 9-13 watt lsb it haves grate ears ,,concerning usa  rio grande train un unknown location and good tect talk about r-13 diode or capacitor i dont remember the unit one of the guy's heard my braker-braker like a ghost in the waether . i rambel of my channel,band and counted up 20-20thou being die hard with a 27meg
One nine for a copy...
here in the UK CB is still going lol
the pcb opens up the test points
Somehow this video got lost in my subs, which is hard to do cos there's not many subs in there!! :S

I thought that CB looked like a Uniden, I used to have a Uniden I salvaged (never got to use it though) that was in lovely shape, but some turd threw it out (along with my Harrier CB-X), and these days CB radios of that era are worth a fair bit, so I'm still pretty peed off about losing them... >:(

Nice CB though, just needs a cleanup and a bit of a contact clean and she'll be reet... :D
CQ CQ, aussie 50, you got your ears on? breaker breaker CQ CQ ten-four good buddy, roger that over... Back in the late 70s there was a CB  craze thanks to the popularity of country music songs like 'Teddy Bear', a very sad song about a crippled boy sung by Red Sovine, and another song about a ghost truck or something, and of coarse the trucking  movie 'Convoy'. Everyone had a CB in their car or home base set-up. Most home set-ups  were just mobile units like yours with a 13.8 volt power supply and a mobile helical antenna mounted onto the eaves on the house. It was a lot of fun and a great way to meet local YL's, that's CB lingo for having an eyeball with the  'Young Ladies'. In Australia, channel 11 was the call channel and everybody respected the emergency channel 9, it was always kept clear an silent. It was complete anarchy, but over all we all had a lot fun... I got the 10-100s, I gotta go.
neat little unit!
Best thing you can do for testing out as a receive antenna is as much wire as possible, as high up as possible, doesn't matter if it zig-zags etc. Run that wire back down to the centre pin of the connector, then tie the outside of the connector to earth by a metal stake in the ground. (Mains earth is a bad idea!)

Saves making the investment of a proper CB antenna if your unit is a dud! Of course, the random wire is no good for transmit, you'll get reflections, SWR goes up, and you'll blow out the PA!
Chip is part of the PLL. Primary function is the divider/phase detector.
Silver can is a filter.
The card at the back is used for bias adjustment.
Not a very complicated SSB transceiver...  seems the only issues you have with it are likely dirty controls. Throw up a simple antenna and talk to the other Aussies out there... You will probably find a bunch.
looks like a PC-122 uniden to me
tryin to receive inside the shed AND with a bunky antenna aint gonna help at all!
Not sure if the same applies to the older sets, but for the radio to receive it needs it's mic connected or a pin on the mic plug grounded. Have a look online for a manual.
Looks like a uniden pc-122 board
+Aussie50 You can pretty easily make a hand-set/mic for that unit, there are schematics online for most of 'em and the connectors should be available at your local electronics place! (or online!) Nice compact bit of kit!
Additionally- I once found a portable radio at a wrecking yard in a pile of miscellaneous scrap (I recall a fridge was there too), I bought it, took it home, plunked a few D cells in it, and it worked great! It had plenty of obvious weathering to indicate it had been there awhile, but aside from water damage to the speaker, some rust spots, and various damage to the casing, it was fine! Sadly I later took it mostly apart for cleaning and repairs, but the damage to the casing was more than I wanted to attempt repairs on at the time and it's sat in a box since! Really should get back to it one of these days...
That looks like a HF unit. The originals where 40 channels and from memory the later oz version 18 channels and early adapters (pirates) lived in fear of a man named David Golds who was a radio inspector in the day :-)

Now most of that stuff is UHF I've not bothered to check but I did repair a UHF marine radio a while ago and connected it to a discone antenna but did not manage to raise a response at the time of testing and relied on a power meter and signal generator to prove it was working.

Perhaps 27 MHz is dead in your area at least on the antenna used to test.
Try pulling some of the legs high and low +/- 1.5 volts (just check the voltage 1st) on the PLL (IC) throw a resister on the leg for low and probe around for a suitable "high" source.. if you have a freq counter you maybe surprised how much of a freq range you get out of the little dude.. 25Mhz to 32Mhz at a push... Maybe more if you spend the time with a screwdriver on a good alignment..
Ed its actually made by either COBRA or Bare cat:)
nothing radio shack sold was actually made by them
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