[GreenKeys] R-808?

[Bruce Gentry]

It is an R-808. I have a couple of them. The decoder uses a 
discriminator operating at the 455 KC. IF frequency. It might be 
possible to use 170 cycle shift, but the output from the discriminator 
would be less, and probably need amplification. One possibility would be 
to build an add on circuit that only responds to polarity reversal from 
the discriminator. Stability could also be an issue. The GRC-14 of which 
the receiver is a part is not noted for short term stability. The R-392 
and T-195 are superior in that regard, and for that and other reasons 
won the competition against the GRC-14. The GRC-14 tranmitter power 
supply alone weighs more than a T-195 and R-392 together.

     Bruce Gentry, KA2IVY


On 9/30/18 10:36 PM, W2HX wrote:
>
> (link this time)
>
> I think this is an R-808? Not mine etc. Seems like a decent price. I 
> wonder if it could be converted for 170 Hz shift (most likely it is 
> 850 Hz). Might look nice running a TT
>
> https://www.ebay.com/itm/352470490996
>
> 73 Eugene W2HX
>
>
>
>
>
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