- #TEN TEC PEGASUS SCHEMATIC PDF#
- #TEN TEC PEGASUS SCHEMATIC MANUAL#
- #TEN TEC PEGASUS SCHEMATIC PC#
- #TEN TEC PEGASUS SCHEMATIC FREE#
#TEN TEC PEGASUS SCHEMATIC MANUAL#
I found a manual for the Ten Tec KR50 which appears to use the same basic circuit and controls.
I'm thinking it was at least 40 years ago when I last had a dual paddle Ten Tec Ultramatic. It was due to my memory not remembering how the controls and switches worked. You may want to see if that description matches what you are experiencing. In the article, the author describes the "Ultimatic" mode.
#TEN TEC PEGASUS SCHEMATIC PDF#
Here is a link to a PDF document called " An ultimatic adapter for iambic keyers". Usually there was a jumper or switch that allowed you to switch between the various operation modes. Most hams are familiar with the Iambic Modes A & B, but there was also a "Ultimatic" mode. Maybe you will get lucky too.Īs far as the sending issue, it sounds like you have discovered the "Ultimatic" mode. After I worked out the whole circuit and got it running, someone saw my request and sent me a PDF of the manual. There were schematics available for the 484, but not the 482. I had to reverse engineer a old MFJ 482 memory keyer. Specs for all of those chips are readily available on line. The best I can tell, from some old pictures, is that it uses a few old TTL IC (3 - SN7400, 1 - SN7476, and 1 - ?). The circuit is also relatively simple and you should be able to reverse engineer the whole circuit.
You should be able to take it apart and put it back together pretty simply. Best yet, has anyone else run into this problem, and, if so, did you find a fix to the problem? So - does anybody know where I can find a manual. It also came without a power/keying cable. I can tell that a previous owner has made some component/PCB modifications. That is where I assume the issue is located. I suspect it may just be dirty contacts on the DIT/DAH paddles, but I'm reluctant to take it apart without knowing how the keyer/relay area is actually assembled. For instance, if I call CQ CQ CQ de K8KJG K8KJG - and, after about a second pause, a new sequence of CQs is completely indecipherable for the first several characters unless I pause, and start re-sending the CQ. I don't think the keyer problem is my "fist." I can't tell exactly what it is doing, but after certain keying pauses and sequences, it seems to be adding and subtracting dits and dahs, and it seems to get slightly confused between dits and dahs when starting a new string of characters after sending a string of perfect characters. I've found one manual, but it is credit card only, in a foreign country where I wouldn't trust sending credit card info. The various Ten Tec/RKR/BAMA, etc., sites don't have any schematics or manuals. I've searched high and low on the Internet for a manual.
#TEN TEC PEGASUS SCHEMATIC FREE#
I don't want to take out a screw and have a dozen parts free falling onto my workbench. I'm not sure how the keying/relay/pressure assembly is assembled.
#TEN TEC PEGASUS SCHEMATIC PC#
I removed the PC board for inspection, and so I could trace out where the keying and power cable should connect. I'm now at a point where I need some assembly drawings or photos before I want to go much further in dismantling it for cleaning and repair.
Yet, I believe I have a pretty good sense of how they should work and how they should be adjusted. I haven't owned an Ultramatic keyer in probably 30 years, until I bought this one. It works reliably to about 10-12 WPM, and then it gets really flaky. I've got it working to the point of exasperation! It needed some TLC, which I mostly completed. I recently got a Ten Tec 645 "Ultramatic" keyer to go with my vintage Ten Tec transceivers. I would ask you to move it, if there is a more appropriate place for it.
Moderators: I didn't know where best to post this.