04-08-2012, 07:14 PM
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Join Date: Dec 2008
Location: Silicon Valley CA, Storm Lake IA
I did a google search on "Magnum 257HP Poor SSB TX audio" and found that I'm not only one having this issue. Some people think the top-gun modulator is the culprit because the previous version of the 257 did not have this problem and the AM TX audio of the 257HP is excellent.
There is NO TopGun Modulator in a Magnum 257HP!
BASE: Kenwood TS-2000, GAP Titan DX, Diamond X50A, Sirio SY27-4, and IMAX 2000.
MOBILE: Galaxy DX99V w/RF Limited CR-577 mic, Sirio Z-180. Yaesu FT-8800R & Diamond NR-770.
Last edited by Robb; 04-09-2012 at 10:18 AM.