FRG-7 is a solid state analogue synthesized communications receiver
covering 500 Khz to 29.9 Mhz. It uses a triple conversion super
heterodyne design utilising the Wadley Loop System. From 1976 to
1980 it was considered to be good value for the money and made a
nice desk top general coverage communications receiver. The FRG-7
was reasonably priced and sold in the £200 range in the UK.
Even to this day it is still considered to be a fine communications
receiver and is much sought after.
modifications presented here are a mix of ideas with some new ones
from Chris Barlow ( G8LVK ) Senior Technician at Monitor Internet.
You should not attempt any of the mods unless you feel confident in
your soldering and construction skills. Also you must have all the
tools and facilities to perform each modification. The information,
circuit diagrams and photos should help you easily and successfully
improve the performance of your FRG-7. New modifications and ideas
are continually under development so keep visiting this page.
disconnect the FRG-7 from the mains power supply before opening it.
To remove the cover you simply unscrew the small cross point screws
located on the receiver.