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FT-857 noise problem I'm working on ProBono - QRZ Forums
https://forums.qrz.com/index.php?threads/ft-857-noise-problem-im-working-on-probono.438373/#:~:text=All%20this%20on%20the%20FT-897D%20and%20on%20FT-857D,easy%20mandatory%20cosmetic%20change%20%282%20added%20ceramic%20capacitors%29.
Yaesu FT-897 Audio noise reduction mod - YouTube
https://www.youtube.com/watch?v=sRu-Us1E0tQ
Noise reduction mod on the Yaesu FT-897.On my Blog - https://m0tef.blogspot.com/2019/04/modifying-ft-897-to-get-best-from-it.htmlI have been using my ft-897 ...
Audio processing and ALC in the FT-897D - Webs
https://g8jnj.webs.com/FTALC.pdf
The following picture shows the effect of modulating the FT-897D with white noise (to simulate speech) and capturing the resulting signal with a spectrum analyser using the max hold function. The bright trace shows the radio with maximum mic gain and processing and full ALC operation (worst case). The dim trace shows low mic gain with no
high noise level on a ft-897d,also a new freq showed up ...
https://forums.qrz.com/index.php?threads/high-noise-level-on-a-ft-897d-also-a-new-freq-showed-up.365102/
A good thing to do is to simply disconnect the radio from the antenna and see if the noise goes away. If it does, then its external to the radio. …
Articles for Yaesu 'FT-897' - mods.dk
https://www.mods.dk/index.php?ModelId=69
13.8 V charging modification for FT-897 /897D FNB-78 batteries: 31 Mar 2020: Yaesu FT 897D audio hiss reduction: 20 May 2019: Flashing display on FT-897 (FT-857 FT-817?) 13 Nov 2018: Replacement of the defective rotary encoder (VFO) on FT-987D: 08 Nov 2018: Yaesu FT-897D, Replacement of the 2/70 VHF/UHF SO-239 connector with an 'N' Connector: 26 Apr 2018
eHam.net
https://www.eham.net/reviews/detail/2432
The FT-897D has sockets for two IF filters and being able to customize the IF filters for different modes is a great advantage of the INRAD filters. When using a remote tuner the LDG RT-100 matches a greater range of impedance than Yaesu's alternative FC-20 option. The FT-897D can be configured for a low current draw when portable.
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