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 Post subject: hy-gain cb vintage
PostPosted: Feb Sun 11, 2018 11:40 pm 
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HY-Gain 1 s/n 0102895 just rehabbed one . How old is it?

Jeremy


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 Post subject: Re: hy-gain cb vintage
PostPosted: Feb Tue 13, 2018 11:41 pm 
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Look at the date codes on the parts.

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 Post subject: Re: hy-gain cb vintage
PostPosted: Feb Wed 14, 2018 12:18 am 
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If the radio is 23 channel it is older than 1977, as that is when 40 channels became legal.

Dave


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 Post subject: Re: hy-gain cb vintage
PostPosted: Feb Wed 14, 2018 12:36 am 
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You're might be mistakenly calling "I" as a "one". It's really Hy-Gain Roman Numeral "I" and there were several sets in Hy-Gain's CB transceiver life that had Roman Numeral I on them. Also, the Roman Numeral was not the model number.

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 Post subject: Re: hy-gain cb vintage
PostPosted: Feb Wed 14, 2018 12:47 am 
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Alot of those vintage ones are really neat, they remind me of teenage desire to own a nice CB. Now I can if I want. Trouble is, finding someone to talk to. Or that you would want to talk to.


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 Post subject: Re: hy-gain cb vintage
PostPosted: Feb Wed 14, 2018 7:43 am 
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wazz wrote:
Alot of those vintage ones are really neat, they remind me of teenage desire to own a nice CB.

That wasn't on my desire list when I was a teenager. :D

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 Post subject: Re: hy-gain cb vintage
PostPosted: Feb Wed 14, 2018 8:25 am 
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manualman wrote:
wazz wrote:
Alot of those vintage ones are really neat, they remind me of teenage desire to own a nice CB.

That wasn't on my desire list when I was a teenager. :D

Cars 'n girls...Not necessarily in that order... :wink:

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 Post subject: Re: hy-gain cb vintage
PostPosted: Feb Thu 15, 2018 3:41 am 
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Hy-Gain was the goto CB in its day. If you have the 40 channel model, it has a PLL in it. CB channels are normally spaced 10KHz apart. IIRC there are two places where they are 20 KHz apart, leaving a hidden channel in between. I know some guys who modified their CBs to get that hidden channel between 15 and 16 that was reserved for remote control toys. So these guys had a private channel at a time when the band was full of chatter and skip on all the channels. And when they were near kids play with cars and tanks, they could hear the PWM modulation of the controllers.

A more impressive modification came from the 10 meter crowd, who applied audio voltage to the VCO in the PLL to produce narrow band FM. For receiving FM, they used a cheap TV limiter/discriminator IC that with a few parts could fit on a small daughter board inside the case. Also the LM565 PLL could demodulate FM when tuned to the CB's 455 KHz IF. I got to hear these in use and could not believe that such professional business audio quality and such quietness was coming out of a CB radio.


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