[Amps] TL-922 question

[Tom W8JI]

>>From the responses, I see two possibilities.
>
> 1. Replacing the blocking cap may have necessitated 
> increasing the
> padder caps on 80 and 160.  It seems like all the load 
> positions are a
> bit less than the manual would indicate.  The other bands 
> are still in
> range.

You can go all the way down to a few hundered pF on the 
blocker and it will make very little difference in tuning. 
It is at a few thousand ohm impedance point.

If the blocker was so bad as to affect 160 or 80 
performance, it would be smoking.

> 2. The 80 meter padder cap, which is also used on 160, is 
> actually 2
> ganged sections of the 5 section Load variable cap.  It is 
> possible that
> this cap has become disconnected somewhere in the path 
> from the
> bandswitch to ground.  The 160 padders are discrete 
> components

The problem is the 922 when stock barely makes the lower end 
of 160 and 80. Compounding that problem more C is required 
as drive is reduced.

There is an inherent shortfall in network range on both 160 
and 80.

73 Tom