Yaesu FRG-7700 Survival Manual page 3

FRG-7700 Survival guide
This is a survival guide for the FRG-7700, one of the most versatile receivers from Yaesu.
With the help of this guide your Frog can survive the next 20 years and more.
This guide is in the true boatanchor tradition, a collection of known faults and their solution, and a story of resurrection of
a receiver at my workbench.
My command of the english language could be better, so I apologise for languistic mistakes here and there. I just hope
that I could help anybody to maintain his FRG-7700 in good condition.
73' Wim Penders PA0PGA
Description:
The FRG-7700 is a compact communication receiver, for the reception of AM/SSB/CW and FM signals between 150khz and
30 Mhz. The receiver is very sensitive and stable, and has a pleasant audio.
It has no special bells and whistles, but is designed with the shortwave listener in mind.
That is maybe the reason that the receiver after 20+ years, is still very popular, and in demand by hams.
Tuning is simple and exact, choose band and mode and you are in business, No trills and frills, listening with this receiver
is very basic, and you learn to listen, instead to play with menu's.
You can obtain a used one in good condition for a affordable price on hamfests or on Internet.
Be careful if you buy from Internet, there are many guys who advertise with a receiver in good condition, but when it
arrives it is a box full of junk. I have a credo here: If it is not possible to collect equipment myself, and pay cash, I am not
intersted, and can better save my money. I have to see what I buy.
Serial:
The FRG-7700 was getting to the amateur market in 1981 and is replaced in 1986 by the FRG-8800.
There is not much difference between the first and the last receivers, the only thing I saw was a different coupling of the
frequency scala to the dial mechanism. In the early versions it was a felt ring, in the later version a spring.
You can check the age of your FRG-7700 if you look at the serial number:
I have here sn# 4E 290421, this receiver is made in May 1984, the first digit gives the production year, the second letter
the month, (A= Jan, B= Feb a.s.o.), then 3 digits of the production run and 3 for the serial number. Another is 1F
070507, this receiver is made in June 1981.
Other numbers are M1C 050492 (march 1981, with memory module) and 1E 060340 (May 1981).
PAØPGA
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