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http://www.mods.dk/mods.php3?radio=y...ctid=2720#2720
Has anyone done the MW band receive sensitivity improvement mod on the FRG-100? See above link. I'm presuming that the FRG-100 and FT-840 circuitry is similar to an extent because both entered the market at the same time in the early 1990's. I want to do a similar mod to my FT-840 for improved MW and especially LW receive sensitivity. 73, Thomas F. Giella, KN4LF Plant City, FL, USA EL87WX Yaesu FT-840 & PSK31 Digital Mode E Group http://groups.yahoo.com/group/yaesu_ft840 160 Meter Amateur Radio Resources & More http://www.kn4lf.com/kn4lf.htm Daily Solar Space Weather & Geomagnetic Data Archive http://www.kn4lf.com/kn4lf5.htm HF/MF Radio Propagation Theory Notes http://www.kn4lf.com/kn4lf8.htm Florida Space & Atmospheric Weather Institute http://www.kn4lf.com/fsawi.htm Friend Website Design www.kn4lf.com ----- Original Message ----- From: "Thomas Giella KN4LF" To: "a Longwave Radio" ; "a HCDX eGroup" ; "a Cumbre DX eGroup" ; "a ABDX eGroup" ; "a My FT-840 e-Group" ; "a Amateur Repairs eGroup" Sent: Thursday, November 27, 2003 11:49 AM Subject: FT-840 Receive Mod? Happy Thanksgiving to my stateside brethren! Has anybody ever done a mod on the fixed front end preselection circuits of the FT-840 to increase sensitivity on the MW and LW bands? I haven't looked closely at the schematic yet but I would presume that it's a matter of defeating a resistor or two. --- Outgoing mail is certified Virus Free Thanks To Grisoft AVG. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.544 / Virus Database: 338 - Release Date: 11/25/2003 |
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