Kenwood TR-9000 - UK Vintage Radio Repair and Restoration Discussion Forum

K4CFinNC · 4th Aug 2022, 2:09 am

Hello there friends across the pond! Just found this forum and have read tons of great posts. I am seeking help for my TR-9000. I just bought this rig from a Silent Key estate which included the BO-9 system base, PS-20, and SP-120. On low power, I'm keying about a half-watt and the audio on FM/SSB is great. However, on high power, I'm keying 12 watts on the power meter but no modulation in any mode. Any ideas what could be going on? TIA!

Dan - K4CF

PA3DAF, Erwin · 5th Aug 2022, 5:47 am

If you are using another 2 meter transceiver for listening to your audio it's possible that the receiver is blocking because of the strong signal. Turning down the RF gain or add some attenuation on the input might help.

Erwin, PA3DAF

4th Aug 2022, 2:09 am	#1
K4CFinNC Diode Join Date: Aug 2022 Location: Bakersville, North Carolina, USA. Posts: 1	Kenwood TR-9000 Hello there friends across the pond! Just found this forum and have read tons of great posts. I am seeking help for my TR-9000. I just bought this rig from a Silent Key estate which included the BO-9 system base, PS-20, and SP-120. On low power, I'm keying about a half-watt and the audio on FM/SSB is great. However, on high power, I'm keying 12 watts on the power meter but no modulation in any mode. Any ideas what could be going on? TIA! Dan - K4CF

5th Aug 2022, 5:47 am	#2
PA3DAF, Erwin Diode Join Date: Mar 2022 Location: Huissen, The Netherlands Posts: 9	Re: Kenwood TR-9000 If you are using another 2 meter transceiver for listening to your audio it's possible that the receiver is blocking because of the strong signal. Turning down the RF gain or add some attenuation on the input might help. Erwin, PA3DAF