Frequency Counter on Heath Mohawk

[AB3FL]

Am I correct in assuming that I can connect a regular frequency counter to the output of the HF Osc/Cathode follower and see what frequency the receiver is tuned to?



thanks all

Tom - AB3FL

[WQ9E]

Tom,

The frequency read out will be off by 1682 Khz. (the first IF frequency) since you are reading the actual oscillator frequency.

Rodger WQ9E

[AB3FL]

Hmmmmmm.....any easy way to get the freq counter to read the correct frequency.


Tom - AB3FL

[WQ9E]

Tom,

I can't think of any easy way to do this with a regular counter, hopefully someone else has an idea.  The dedicated displays have a programmed (or programmable) offset so that the display is correct.  The HFO in the Mohawk operates at 1682 Khz. above the received frequency.

National RF advertises a universal readout for vintage gear and I believe there is another company that also makes a "digital dial" for vintage gear. 

Rodger WQ9E

[AB3FL]

I know I can use one of the many modern counters with programable offset, but it won't look right       I am looking into a used one with nixie tubes!   It will show 1682KC above what it is actually at.  Maybe I can make an "unmixer" to subtract the 1682KC 


Tom - AB3FL

utilizing "The Google" to try to find a circuit

[Tom WA3KLR]

NorCal has a small frequency counter pcb assembly kit that will do the offset.  It used to cost $35 as I recall.

FCC-1 with LCD.

[AB3FL]

Someone sent me this link a while ago:
http://www.pongrance.com/ddfc.html

which will do what I want, but I don't want to use an LED/LCD counter...

Tom - AB3FL