09-18-2017, 10:22 PM
I've finished re-capping a 41-280 chassis and replacing out of tolerance resistors. Now I'm working on the alignment. The IF alignment went OK as did the broadcast and police bands. Both of these bands track perfectly across the dial.
The problem is the overseas band. I can peak compensator 17A at 12 mHz but compensator 2 has no effect. The image signal is 910 mHz above the fundamental as per the instructions, but at the same volume (not weaker). Also, the tracking is way off at the lower end of the dial. For example WRMI 9395 comes in at 9500 and the image can be heard at 10410 at the same volume.
I'm beginning to think the overseas oscillator coil may be bad.
Any thoughts would be appreciated.
Dave
The problem is the overseas band. I can peak compensator 17A at 12 mHz but compensator 2 has no effect. The image signal is 910 mHz above the fundamental as per the instructions, but at the same volume (not weaker). Also, the tracking is way off at the lower end of the dial. For example WRMI 9395 comes in at 9500 and the image can be heard at 10410 at the same volume.
I'm beginning to think the overseas oscillator coil may be bad.
Any thoughts would be appreciated.
Dave
