I have a TR4-CW and I have a TR4-CW/RIT.
I purchased both rigs less than 2 months ago.
I also purchased a DD-103 which was wired for TR4.
The DD-103 to the best of my knowledge is wired correctly.
The DD-103 worked on both the TR4-CW and on the TR4-CW/RIT.
I noticed that when I turned the main tuning knob on the newly acquired TR4_CW/RIT that with every revolution it would make some kind of a scraping sound.
I posted on this group of what it could be?
I took alot of photos of the 4 wires and the disassembly of the PTO. It was pretty much straight forward removing 4 wires and removing the screws and such for the PTO.
After removal of the PTO I discovered that gears did not line up correctly. By lightly bending a piece of metal that one of the gears was attached to quickly fixed the mis-alignment.
I then simply re-installed the PTO and connected the 4 wires correctly!
I then connected my rig to my antenna but heard no stations.
I then removed the PTO, connected an external 9 Volt (I believe it was 9V?) and used my signal generator to pick up the PTO signal from its wire.
Perfect signal, perfect strength and tracked up and down entirely across the band. I think it outputted 4.8-5.6 Mhz. Nothing wrong with the PTO!
I connected the wires back up to the PTO and again no signals!
I then put the spectrum analyzer close to the PTO signal output to see if the signal was being loaded down and I still have signal output that tracks the PTO.
Out of curiosity I connected my working DD-103 to the jones connector and it reads 9Mhz.
And no I have not monitored the internal TR-4 VFO. I don't know where that is?
Mark
?
?
Mark N2DMI