I just put a jumper wire from the base of the transistor that drives the relay to ground. Some people pop the cover off the relay and jam the armature down with a piece of cardboard. 73, Bob WB2VUF _
Doc, I doubt if there would be any interaction between the power supplies. However, the power supply can affect the Corsair. Put the power supply on the right side of the rig, otherwise the transmitt
Yes, that's mucho RF! Any avionics equipment that my company builds for a navy appplication has to be tested in a 200 V/m field. These tests are done with the equipment (and us) in separate shielded
That's correct. The older rigs were designed for Hi-Z mics. Also, the 540 may not provide the DC voltage necessary for an electret mic. You may need to put a battery inside the mic. The Ten Tec desk
Larry: Let us know how you like it. I might consider replacing my Ten Tec 1220 FM rig with one. 73, Bob WB2VUF _______________________________________________ TenTec mailing list TenTec@contesting.co
AMP mate-n-lock connectors are carried by Mouser Electronics and Digi-key. 73, Bob WB2VUF _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contes
It is possible that some dirt or ferrous material got inside the meter. If you can open it, cut a tiny piece of cellophane tape and holding the tape with tweezers, work it around the magnet to pick u
Yes, I know that automatic tuners are the marvel of the age, and I may have one someday. However, I grew up in a different age. Tuners designed for about 100W used relatively large components. Tuners
Yes, I, too recommend a bigger battery. For safety's sake, use a sealed lead acid battery. The best are the Optima yellow top batteries. Also, I think Powerwerx and West Mountain Radio sell deep cycl
Bob: Yes, the small 7 amp-hour battery was probably a gel cell and may have just had too much internal resistance to run the Corsair. 90 amp-hours is more than enough. I think you could get by with m
Paul: The Corsair has a wide and narrow RIT, so it should be possible to copy that design. You may need to change the RIT pot to get a wider voltage swing. There is no RF gain control on the Delta 58
SGC sells such a loop for portable use. I don't know how well it works. Probably not as good as a full size loop but no doubt much better than the miniature single turn loops. The multiturn loop have
Yes, that is what I use. I only have a 60 foot span between the house and the tree, so half of my 80 m dipole is bent downward and horizontally to make it fit. It works fine. Bob WB2VUF _____________
Dale: You could use an LM567 (NE567) tone decoder chip tuned to 750 Hz to drive the LED. 567's were very popular in touch tone decoders. Isn't the receive offset in the HW-101 1 kHz, not 750 Hz? 73,
Yes, I remember that antenna. It was a broadband dipole that had transformers and resistors built into the center insulator. QST actually x-rayed and disassembled the potted assembly. Some of the cir
Its a mystery to me why hams would go for a broadband antenna of any kind, when a dipole fed with ladder line and used with a decent tuner (auto or manual) is cheaper and more efficient. Yet, I const
Yes, now that I think about it, I recall that the QST review was unduly harsh. I think QST has been biased in favor of the big-3 import brands, just like Consumer Reports favors Japanese cars and doe
A similar thing happened with the Paragon. QST found a problem with phase noise. Ten Tec promptly came up with a mod that was tried and reported in the review. 73, Bob WB2VUF ________________________
You do need a tuner with a 1/2 wave end fed wire, but it is possible to connect the wire directly to the tuner output. A counterpoise is still required, but it can be much shorter than the counterpoi
Vic: Try the simple stuff first. Did you try pushing the red master reset button on the side? If the radio has been idle, try removing and reseating the processor and memory cards. 73, Bob WB2VUF ___