Showing posts with label FT-991 Transceiver SWR meter on 2 and 440. Show all posts
Showing posts with label FT-991 Transceiver SWR meter on 2 and 440. Show all posts

[Yaesu-FT-991] MARS / CAP MOD

I've tested and this proves that this rig is capable of tx at 446MHz for ex as it is.. software mod only I guess.. some hacker among us? :-)

I've checked that out of band TX is possible only via service menu. Manually tunned 446.05625MHz and rig was putting power to the antenna with a flawless FM modulation. Im a owner of a EU version, and it will NOT tx above 440.000MHz under normal running circumstances. So, fisically everything should be ready for tx, just software blocking our path I guess.

Hi did you actually change settings in the service menu? if so what settings?i think a lot of people ,myself included are little bit dismayed at the lack of tx from 146 to 148 after all the 991 is advertised on yaesu uk site as 144-148 tx on vhf.. i have emailed yaesu uk on numerous times to get an explanation for this but with no reply....yaesu are guilty of misrepresentation and false advertising so they need to be more forthcoming with the required information.

FT-991 Expand TX ( MARS Modification )

FT-991 versus TS-590

I have a TS-590 and now a new FT-991. I would appreciate any comments or discussion on reasons to keep the TS-590 or should I just go ahead and sell it. It seems that the FT-991 will do everything that my TS-590 did but I am always reading about how great the TS-590 are that I am concerned that after I sell it I will regret it.

I know that I should be able to compare the two rigs myself but I can't.

Any thoughts comments, pro and cons, etc. would be appreciated.

FT-991 Transceiver SWR meter on 2 and 440

My internal SWR meter is reading 1.5:1 on both 2m and 440
running 35 watts into a 50 OHM BIRD load connected DIRECTLY
to the VHF/UHF SO239 connector. Nothing wrong with this load!
Same thing with another BIRD 50 OHM load via a short coax cable.
SWR goes to zip when the power is reduced to 5-10 watts.
Using FM and RTTY modes to generate carrier.
160 thru 6 meter readings are fine.
Are the SWR meter readings valid on 2 and 440?
Royce - W3IF

FT-991 software FTRestore is a Windows desktop application

FTRestore

FTRestore

FTRestore is a Windows desktop application I developed to upload, download and compare memory channels and menu settings in the Yaesu FTDX1200 and FT-991model transceivers. Details of the Regular Memory Channels and the PMS Memory Channels can be uploaded from the transceiver into a worksheet grid control where they can be modified as required, before being saved in a Microsoft Excel compatible file. Details of the Menu Settings can also be uploaded, saved and downloaded. The files can be opened at a later time and have the memory channel and menu setting details downloaded again to the transceiver. There is also the ability to compare the memory channel and menu settings details in FTRestore with the values in the transceiver to detect any discrepancies before uploading or downloading.