IF the rig has the noise blanker, the CW filter and has a crystal calibrator, then in excellent condition it is perhaps worth $225. The 252 power supply is worth maybe $50 IF it has the OVP (over vol
While we're posting opinions, here's mine: Dividing Ten-Tec users into little sub-categories is like having many email addresses. It is more of a bother than it is worth. The origin of the problem se
Take the digital display apart enough to unplug and re-seat every circuit board. Then, while you are at it, do the same with every circuit board in the rig. Most troubles can be rectified this way. 7
I'm biased in favor of the 544, but my best estimates would be as follows: Omni-A in ugly shape - $200-225 (add $50 per installed extra crystal filter) 544 & power supply sold together - $300-350 73,
Tim, please tell me why you care "...if the 32 bit IF DSP system in the Orion works better than the Pro." I've watched as you said you bought and sold radios repeatedly, apparently never being satisf
I had exactly the same trouble, but was powering a 580 Delta with the supply at the time. I was adjusting an antenna tuner with low power from the rig when the supply quit. After that, hitting the ke
Jerry, the trouble wouldn't be with the current protection, but is probably with the crowbar (overvoltage protection) that is blowing the fuse. One of the pass transistors may be shorted, putting too
How bout if we take a 7.2 MHz local signal modulated with SSB, then divide it by 10. Now if we demodulate the 720 kHz signal and use the resultant audio to modulate a new transmitted signal, we would
If you have one of the matching Ten-Tec power supplies, make sure it has an added crowbar circuit. That generation of Ten-Tec supplies did not have one. Mike N4NT
other things: the dial pointer is pulled down to the left with a rubber bungee section of the dial cord. Over the years, it will lose elasticity and the pointer will fail to go all the way to the lef
Lew, probably any handbook has a schematic of a crowbar circuit. It would consist of an SCR and a zener diode, along with a fuse. In principle, the SCR is across the load end of the fuse so that when