**Transmitter Noise/Desense Test of Stock Internal Cables - RP4000V**
Receive Frequency: 449.0375 MHz
Transmit Frequency: 444.0375 MHz
Power at chassis transmitter antenna port: 23 watts (Telewave broadband
wattmeter w/50 ohm load)
Test Condition: 50 Ohm Load on the RP4000V Transmitter Port
Monitoring the discriminator output ("MIN" line on the receiver module)
Reference Signal (transmitter not keyed): -118 dBm with 1 kHz tone/3 kHz
deviation
Reference Signal (transmitter keyed): -118 dBm with 1 kHz tone/3 kHz
deviation
Degradation: 0 dB
(I even had the case/cover of the receiver open during these tests)
**Measured Cable Loss**
Equipment: HP 8920A
Transmit Frequency: 444.0375 MHz
Power at module transmitter antenna port: 19.2 w/42.8 dBm (incl. jumper
cable loss)
Power at chassis transmitter antenna port: 18.4 w/42.6 dBm (incl. jumper
cable loss)
Internal Cable/Connector Insertion Loss: 0.2 dB
Conclusion: Don't waste your time changing these factory cables on this
model.
Could somebody make similar measurements on a RP2000V? I don't have one...
Greg
N6LDJ
Greg Forrest
N6LDJ
W6YYY/W6UUU Trustee
440.0375 +5MHz Voice (Oakland, CA)
444.0375 +5MHz Voice (Pleasanton "Garage", CA)
925-337-4444
[EMAIL PROTECTED]
