[AMRadio] 7360

[Donald Chester]

The 7360 makes a very nice mixer, probably better than any solid state 
design.  It has some gain, very low noise and spurious responses.  One 
problem is they have become rare and expensive.  An inexpensive alternative 
is a 6AR8, listed in the 2002 Antique Electronic Supply catalogue for $5.50. 
  The only drawback is that one of the grids is internally connected to one 
side of the filament, which would have to be grounded.  That shouldn't be 
too much of a problem if you run DC on the filament, which I would 
recommend.  I have built mixer circuits with these tubes, and they are very 
sensivive to stray magnetic fields, including that of their filament when it 
is powered by 6.3 vac.

The 7360 makes a good rx mixer as well as balanced modulator for anyone 
interested in homebrew slopbucket.  Would be curious what kind of results 
anyone has had with the 6AR8.

Don K4KYV


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