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Mods for the FRG-100
http://www.redwaveradio.com/11_f93b0b71c076d7fb_1.htm
to increase the volume when going to SSB (ECSS) mode. This mod reduces the AM volume to match the SSB level. Solder a 2.7K or 3.0K resistor from the + pin of C1205 to a ground point. This reduces the AM detector output level. 3. Audio: If you want a more pleasant AM audio with more highs snip out completely capacitor C1164 (small 220pf ceramic).
Modifications for the Yaesu FRG-9600
https://www.qsl.net/ve7lgp/yaesu/FRG-9600.htm
Prepare the audio coax appropriately and solder the screen to the earth pin and the inner core to the middle pin. Replace the top and bottom covers, making sure that there is no strain on the coax and that it is not being "pinched" by the covers. IMPORTANT - Add a "MOD NOTE to the inside of the radio and also in the instruction book:-
Monitor Internet - Radio Modifications - FRG-7
https://www.monitor.co.uk/radio-mods/frg-7/frg-7.htm
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. The modifications presented here are a mix of ideas with some new ones from Chris Barlow ( G8LVK ) Senior Technician at Monitor Internet.
mods.dk - Articles for Yaesu 'FRG-7'
https://www.mods.dk/index.php?ModelId=8
KIWA Electronics audio mod kit (discontinued, company out of business) for Yaesu FRG-7: 16 Jun 2010: Several FRG7 mods for improved performance. 25 Nov 2009: EMC and harmonic mixing problem in a Yeasu FRG-7: 29 Feb 2004: Thierry Leconte modification page: 19 Jul 1998: FRG-7 Antenna for the Broadcast band
mods.dk -> YAESU -> FRG-7 -> KIWA Electronics audio mod ...
https://www.mods.dk/view.php?ArticleKey=ee89cf31f0cdb12ec50288d7f06ced26
Copied from the internet, the KIWA mod widened the audio output of the FRG-7, so AM listening was more enjoyable. The speaker and audio amp are limits on
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