IC-746 FAQ
3 Accessories
3.1 Power Supplies
3.1.1 What power supply should I use with the IC-746?
Short Answer
Any good quality, communications grade, power supply rated at least 20 amps or more
(continuous duty) should do just fine. However, most of us use larger supplies (for a variety
of reasons).
Popular supplies that are known to work (via testimonial):
Alinco DM-330MVT 30/32A switching
Astron RS-35M 25/35A linear
Astron SS-30 25/30A switching
Astron SS-25 20/25A switching
MFJ 4125 22/25A switching (MightyLite)
MFJ 4225 22/25A switching
MFJ 4035-MV 30/35A linear
Samlex SEC-1223 23/25A switching
Kenwood PS-52 20/22A linear
Power supplies to avoid (via testimonial):
Astron RS-20 - overloads too easily
Kenwood PS-30 - overloads too easily
Diamnond GZV-4000 - RF hash on 40/20m
Icom PS-85 - RF hash
Long Answer
This question typically arises for one of two reasons. Either someone wants to buy a new
power supply, or they have an existing power supply that they want to use. In both cases, the
issues are: load capacity, size, weight, electrical noise, mechanical noise, cost, features, and
appearance. Buying a new supply gives you a lot of options; there are plenty of great
supplies out there. With an existing supply, you have no control over these factors; you're
simply looking for a "fit".
You'll want to consider the following factors.
Reviews
QST tested and reviewed many supplies in January and September, 2000. You'll find the
results informative. ARRL members can access those and other reviews on-line at:
http://www.arrl.org/members-only/prodrev/pdf/pr0001.pdf
Page 23 of 113
2003-02-08
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