04-27-2012, 12:04 AM
If I had to guess (and I do) 
you are on the wrong peak. ie if the LO is to be at 6.53MHz when you tune 7Mhz, you have it peaked at 7.47 Mhz on the LO
turn the signal generator level down, and try to find a peak at 7MHz with the trimmer turned in tighter.
I would also assume the 1150 pF cap would be paper, you could try putting 2 .0022uF caps in series (1100pF) and see if the situation improves.
you are on the wrong peak. ie if the LO is to be at 6.53MHz when you tune 7Mhz, you have it peaked at 7.47 Mhz on the LOturn the signal generator level down, and try to find a peak at 7MHz with the trimmer turned in tighter.
I would also assume the 1150 pF cap would be paper, you could try putting 2 .0022uF caps in series (1100pF) and see if the situation improves.
John
Las Vegas, NV USA
