[Hammarlund] SP600-JX-17 HOOK UP TO DRO-50

[Rodney Bunt]

There is a 3.5MHz mixer used on frequencies above 7.4Mhz. below this it gates the signal directly
into the IF at 455kHz.

So does this frequency readout, have a inputto tell it that you are using a band above 7.4MHz and
subtract the 3.5MHz , check out this site for how it is done. http://www.aade.com/dfd1HAM.htm

Rodney
VK2KTZ

--- tgrieco <tgrieco@optonline.net> wrote:
> I have a Hammarlund SP-600-JX17 that I am trying to hook up to my radio.
> Communications Electronics DRO-50
> frequency readout made specifically for this unit. I guess only a hundred
> were made. It has a bnc off the back, but can't find where exactly to
> connect the wire to the radio. I have had excellent help, but still not
> working. The radio is fine and so is the DRO. When I am on 14 Mhz it reads
> 17Mhz.Any takers out there??
> Tim
> 
> 
> 
> 
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