On a strong signal with ATT off and IPO the S- meter is at 0. The spectrum display is near the bottom line. The same signal with ATT off and AMP1 is S9+5dB and the spectrum display is above the first bar. With ATT off and AMP2 the S-meter reads about S9+15dB and the spectrum display is on the second (middle) line. The difference between IPO and AMP1 is an almost inaudible signal to S9+.
A signal that is S-9 on my FT-897D (with that rigs ATT and IPO both off) is barely S9 on the FT-991 with ATT off and AMP2 on and at S0 with no amps (IPO). With the amps off it is S zero. VHF/UHF is normal. Looks like I have a receiver problem.
Back to Yaesu for repair???
Yaesu FT-991(A) Users Group (groups.io)
https://groups.io/g/Yaesu-FT-991
same problem with 991a that i just picked up. did you get this fixed?
ReplyDeleteneil
what did thay do to fix it , did you get a invoice with the parts thay usedv, and what were the parts , thanks ,willie KD9CPC
ReplyDeleteHi, did you have a solutionn already for this problem?
ReplyDeleteRegards
Klaus (DL5YCX)