[Elecraft] PR6-10 Tests

[Ed Cole]

I imagine there are many who have the PR6 or PR6-10 for their K3.

Recently I had to replace the PGA-103 in mine so took the time to 
measure NF and gain at 50-MHz.

NF = 0.78 dB
Gain = 21.15 dB
Voltage at input leg=0.6v
Voltage at output leg=2.5v
80ma at 13.5vdc

That's pretty good with switching relays in-line (typ. 0.7 dBNF, 20 dB gain)

HP8970B NF meter with Maury MT7618L noise diode.

Using a new WA2ODO 2m preamp as calibration source the NF measurement 
was within 0.01 dB of that measured by WA2ODO with laboratory calibrated 
equipment.

73, Ed - KL7UW