I recently received a 6 digit LED frequency counter module I ordered from China ($12 + $2 shipping). This thing is pretty amazing, I programmed it for an IF offset of 5.173 mHz, hooked the input to pin 8 of the plug in the accessory socket on my Swan 500 (VFO output) applied 12V to the module and now have a bright blue digital readout! I had my doubts as to how accurate this setup was going to bend listened in on some QSOs on 80 and 40 and it seems to be reading around 150 to 200Hz high and about 100 Hz high per the xtal calibrator not bad! I was also pleased to find that the drift was not even a factor after ten or so minutes of warmup. I now actually have a piece of 21st century tech in my shack, it was fun. Just thought I'd share that.