[AMRadio] FW: Homebrew receiver

[Donald Chester]

>
>...the Scott had push pull 25L6 (6L6 with 25 volt filaments), ...

The tube is a beam power tetrode like the 6L6, but two are quite different.  
The 25L5, 35L6 and 50L6 were designed for ac/dc radios, they are physically 
much smaller and have nowhere near the scrote of a 6L6.  They are more like 
a 6V6 than a 6L6.  A later miniature version is the 50C5, which is similar 
to a 6AQ5.

I have a Scott SLRM with pushpull 25L6's, and it sounds very good on AM.  It 
is not a  real communications receiver, though.  It is more like a high 
quality late 1930's broadcast radio.  Most of the precision technology went 
into  careful shielding to prevent the local oscillator from radiating.  The 
rx was used on board the Liberty Ships during WWII as an entertainment 
radio.  They didn't want the enemy to home on the signal from the oscillator 
and discover the location of the ship.

Don K4KYV

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