SRA-FC393 frequency counter mod for 7.8mhz cobra/uniden use?

[Xracerx13]

Anyone know the mod for the Ranger FC393 frequency counter...that is... to make it work with 7.8mhz.
The new style has all the electronics on the front panel behind the LED's.
I heard in a video that it involves changing out 2 SMD caps, adding a jumper, and adding another cap for tuning.
No pics or info anywhere that I can find. Thought I would do the asking, instead of the helping for a change.

 

[Xracerx13]

No-one?

 

[nomadradio]

Biggest problem is to identify the version. They changed the circuit board several times over the years it was produced. Each time the setup to choose the offset frequency got changed along with it.

Would be terribly handy if someone made a record of each revision, and the proper setup to choose the offset for each one.

73

 

[Xracerx13]

Chris Holland at Superior CB was nice enough to share the mod by e-mail. Its for the most recent version of the SRA FC-393 with all the circuitry behind the front panel LED's only. For Cobra Uniden 7.8mhz. Change, 1 cap, 1 resistor, add 1 jumper.

 

[Harley3315]

Chris Holland at Superior CB was nice enough to share the mod by e-mail. Its for the most recent version of the SRA FC-393 with all the circuitry behind the front panel LED's only. For Cobra Uniden 7.8mhz. Change, 1 cap, 1 resistor, add 1 jumper.
View attachment 67418

So change c17 to 150pf add? Jp1 and change R10 to 100ohm??