[Boatanchors] Tweaking a Boatanchor Receiver?

[Bonddaleena at aol.com]

In a message dated 1/17/2006 6:18:05 PM Eastern  Standard Time, 
kd4e at verizon.net writes:
I just read this post and it got me  thinking.
"Drake TR-3 ... with a very hot receiver."

What are the  specific features in certain BA receivers
that makes them "hot"?

Is it  mostly the tube selection?

Are there other specific things done in the  front
end?

Which of these may be duplicated via minor mods  to
existing BA receivers to enhance their performance?

Just wondering  ...

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Thanks! &  73, doc  kd4e

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KD4E     =====================================
West  Central  Florida

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As you are probably aware, internal receiver noise at HF is inconsequential  
compared to man-made noise at these frequencies. Lots of newer HF radios do 
not  even use an RF amp in the RX section. I have a large collection of Drakes 
and  yes, the receiver section of my TR4Cs and R4Cs and R4Bs, are indeed 'hot'. 
 Sometimes TOO hot.
A 6BZ6  RF amp is a VERY 'HOT" amp, IF it is combined with reasonable  IF 
gain in the following stages.
I have reworked many Drakes and the last TR3 I did, was pretty amazing. It  
heard everything my rice radios heard.....
 
 
ron
 
N4UE