[Hallicrafters] SX-71 s meter help

[Rodney Bunt]

Cathode resistor R8 2.2k on 1st mixer could be high, also R9 screen resistor 330k could be high or
screen bypass C10A (the ones in the metal cans - three together - I had to replace the lot) could
be leaky.

There is a mod for the 2nd IF - Replace R22 (1k) with 270 Ohm, replace R23 (6.8K) with 33k and
connect it directly to junction of R24 and C26 and 3rd IF can. I can send you info on this, I got
it from the Hallicrafters site.

I can recommend these mods, realy makes the old girl pick up those weak signals.

Rodney
VK2KTZ


--- jh7hc at juno.com wrote:
> 
> Finally got this beast to come alive-BUT need help in where to look to get the S-meter to
> respond- Replaced S-meter pot on back- 82 ohm resistor measures ok. Just no life in the meter
> response even on nice loud signals.Show very little movement. Tnx Joe  WS0E
> 
> 
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