[Hallicrafters] Info on S-72 and S-72 L

[Steven Pituch]

Hi all,

I just acquired an S-72 and noticed it was different from another I had
seen.  The difference seems to be a bandspread capacitor on the top of the
chassis.  I think I have an S-72, while the ones with the extra variable cap
are S-72Ls.

1) Does anyone know if there is a significant performance difference between
the S-72 and the S-72L?  I am thinking that the S-72 has a simple gear
reduction for the bandspread insead of a variable cap.  I was hoping it
still would be a decent SW receiver.  But then why would Hallicrafters have
had the bandspread capacitor on the S-72L?

2) It seems an extra switch pole was added to the BFO circuit switch.  I
wonder in the restoration whether it would be advisable to make this change
in my S-72.  But without a narrow filter it is probably a moot point.

3) The S-72L has a gap in its coverage while the S-72 does not.  I just
wonder why.

4) Mine has a BFO switch on the front panel.  Many do not.  Does this mean
that these models don't have the BFO stage?

5) I bought this as an inexpensive alternative to purchasing a Zenith
TransOceanic.  I think this radio has some advantages to the ZTO.  Anyone
care to comment?

Regards,
Steve Pituch, W2MY

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