[WIham] Working on a Heathkit HW-202

[Nels Harvey]

Tom,

Just going from memory, the radio probably is phase modulated, not true 
FM.  Small changes on the 6 MHz. crystal made for enough swing at 146 
MHz. to deviate the carrier ok.  The receive formula is 45 MHz. times 3 
and either plus, or minus, 10.7 MHz.  When that radio was probably 
built, 146.94 MHz. was used as simplex.  Also, who knows what crystals 
got changed out before dumping the radio.

The mic was a crystal, or ceramic, high impedance style.  Most older CB 
mics were ceramic, as opposed to the newer, low impedance, dynamic mics 
used today.  Any old CB mic will probably work if you can find that 
round, 2 pin,  connector.

The HC-25U crystals were common to radios like the Regency HR2A, and 
they might work fine in your radio.  That does denote the case and pin 
spacing.

Now that you can buy a new HT for well under $40.00, that does VHF and 
UHF, even out of band stuff, your project is probably just a labor of 
love.  Good luck!

73, Nels....

On 4/13/2015 7:15 PM, Tom wrote:
> Hey all,
>
> I pulled out a Heathkit HW-202 rockbound  (6 sockets rx, 6 tx) radio 
> that I had been given years ago.

-- 
Nels Harvey
262-241-3769
Amateur Radio WA9JOB