![icom 756 pro ii no tx icom 756 pro ii no tx](http://www.hampedia.net/pictures/icom/ic-756pro_1.gif)
The ALC is a little less sensitive I need to set the Quadra ALC menu to 5 bars for 1kW output, vs. The first mixer has lower gain, with the result that the scope module in the Pro3 has its own RF amplifier to bring up the vertical sensitivity of the scope. There has also been a significant gain redistribution. Preamp 1 has negative feedback to improve linearity without compromising NF. In the Pro3, the preamps have been designed for highly linear large-signal handling, consistent with a low noise figure. When switched in, Preamps 1 and 2 do not raise the audible noise level in the receiver as much as they did in the Pro2. S9 + 60 dB signals 1 to 2 kHz above and below our channel edges did not produce any perceptible artefacts in the received audio. In addition, the Pro3's strong-signal behaviour appeared to be excellent.
ICOM 756 PRO II NO TX MANUAL
I am able (by using a combination of NR, NB, Twin PBT and Manual Notch) to squeeze intelligible copy out of the assorted "garbage" on the band more effectively than on the Pro2. The next day, I was able to sustain the sked with my friend Matt KK5DR somewhat longer, as the Pro3 "hears" signals buried in the noise somewhat better than the Pro2 did. I find myself routinely operating with the preamp off on the Pro2, I invariably had Preamp 1 on. Overall, I would judge that the S/N ratio is better than on the Pro2, even in the presence of power-line noise.
![icom 756 pro ii no tx icom 756 pro ii no tx](https://www.ab4oj.com/icom/ic756pro3/images/p3scope.gif)
The NR and NB appear to have been significantly improved. I was able to work a number of SSB stations on 40m which I would not have heard on the Pro2. Preliminary findings are that it pulls weak, noisy signals out of the noise somewhat better than the Pro2. That evening, I installed the Pro3 in my station. On June 30, I picked up my new IC-756Pro3 (S/N 32025XX) at a local dealer. For now you should revert to the official release version of WSJT-X v2.1.2.Adam, VA7OJ/AB4OJ's IC-756Pro III User ReviewĪdam, VA7OJ/AB4OJ's IC-756Pro III User Review Initial observations (July 2005) I suspect it is the latest v2.2.0 RC1 beta test version, that version has a known issue with using RTS or DTR for PTT. You don't mention which version of WSJT-X you are using. Any suggestions on the correct settings to get this to work would be greatly appreciated. I was able to get another digital mode program, FLDIGI, to work using their FLrig software, using the listed settings and RTS, but as indicated this does not work with WSJT-X. I have tried with the PTT settings on CAT and RTS, both result in the radio immediately going into transmit mode. I believe the correct settings for the 756PROII to be 9600 baud, 8, N, 1. However, as soon as I activate the PTT settings, the transceiver immediately goes to transmit mode, and the Transmit button ion the radio has no effect in turning it back to receive, and I then get a rig control error message.
ICOM 756 PRO II NO TX SERIAL
Also, the serial port shows up correctly as the dev/ttyUSB assigned to the Plug & Play. The baud rate for the 756PROII is set at 9600 baud, so I know that part of the set up is correct.
ICOM 756 PRO II NO TX SOFTWARE
The WSJT-X software is able to receive and decode FT-8 with no problems, but I am unable to get the PTT settings to work. I am using an older HP desktop converted to Linux (running Ubuntu Mate distribution), with a West Mountain Radio Rig Blaster Plug & Play as an interface between the computer and radio. I am trying to finalize the setup of IC-756PROII to work with WSJT-X.
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