[Milsurplus] ARR-41 Info

[Ray Fantini]

I have been working on a 618S1-4 for a couple months now and have it
almost finished. plan to use it for AM on 40 and 80, the receiver and
transmitter work very well and the set produces good AM. Have no
interest in SSB  because have newer better radios for that. The radio I
am using is the 144 channel crystal version but I have discovered that
the basic design of the radio may have one problem in that the IF/driver
deck works in four bands with band two being 3.75 to 7.25 and band three
being 7.25 to 14.25 so 3.885 and 7.290 are almost at the edge of the
tuning range of the variable IF but it will work. maybe they determined
that having the band change in the Ham bands was a good thing because
the radio would not normally work in that area. The radio will work at
the cross over points but do not think it likes to, maybe that's why
your radio takes so long to channel itself, myself have not gotten the
servo systems to work properly and still end up tuning the radio
manually by the hand on gear methods.
Couple questions, one if the ARR-41 was paired for use with the ARC-38
family why was their never a SSB conversion for that receiver? I wonder
if their may have been a application for the ARR-41 for teletype use?
the 618S1-4 manual has several paragraphs about use of the 618 for
teletype operations and in many larger Navy aircraft tactical teletype
receive circuits may have been common.
Ray Fantini KA3EKH