How about a little box that keys the amp with adjustable attack and delay times for keying the transmitter/transceiver. I'm building one into my PIN diode switch for QSK but it's a natch for budding
Well, sure. But if the amp does not switch in less time than the transceiver or in the case where one is using a transmitter, it sure is handy to key a black box and have it key the amp and then the
If anyone agrees to purchase: http://www.edebris.com/catalog/view_item.php?id=51 I can grunt it into the truck and haul it to Shelby. Serious only please as hauling this means other stuff has to stay
Acme transformer. dual 115V primary single 2500V secondary 1.7A CCS, sealed, rated to 10,000 feet. 9 x 450V 800mfd caps with bleeders mounted on a piece of fiberglass board. 30A 250V twistlock connec
Has anyone ordered on to play with, or dismantled the new microwave oven with "inverter technology" while alone for a coouple of hours? Curious as to voltage and noise. -bob wb4mnf -- FAQ on WWW: htt
Skip Looks nice. My only question: 500mA tranny. doubler 200mA key down What the heck are you gonna run with a 7kV 200mA supply? -bob -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: am
No No No Colin, You send FEC digital data. Very low rate while you are speaking so the listener doesnt hear it and you increase the rate to maximize power/bandwidth utilization during pauses. Aviatio
-- From: Alek Petkovic <vk6apk@eon.net.au> I sent to Alek but thought list might be interested. According to Panasonic press releases, oven supply is indeed a HV switching supply good for running mag
OK smart (power systems) guys.. Generator, speced at 60Hz at 3600RPM I can control prime mover speed to nominal 3600 but what about fine tune? field doesn't need much current, can I rotate field (ele
Working on HV without... 1) applying shorting stick 2) connecting shorting strap while stick is in applied. is asking for trouble. How many times have you flipped the wrong breaker or connected the w
Who knows about a "high leg" on a three phase system? Have this at my shop. Three phase (4 wire plus ground). One of three phase is marked "high leg". Between the other two phases and neutral, I see
Have a receiver here and power supply is marked 25Hz. USA made for USA market. Who knows when and where in USA 25Hz was so common that 'consumer electronics' was manufactured to operate on it. -bob -
Thanks for all info... It looks like I have the 4 wire delta with the center tapped winding for 120. I'll try to verify by looking at the transformer... -bob -- FAQ on WWW: http://www.contesting.com/
Why not call your power company and see what they charge for a three phase drop. The panel should be about $100 or so. You only need a breaker for your old box and another for your three phase gear s
DanYou are correct. Tek employed a distributed amp as well as some of the early RADAR gear. One needs hip boots around here at times :-) -bob -- ... distributed ... -- FAQ on WWW: http://www.contesti
Barry Am using here with no switching. I just pull in the keying relay and leave it in. Use a resistor in line with keying relay to lower idle current. There is enough signal leakage to hear fine on
Finally got the experimantal antenna back up. Total material costs under $50. 559's from South America and Europe on 80 last night. 589's from JA this AM on 40 (didn't get out of bed early enough for
My antenna of choice for 80/40 since 1984. A full size, 80m, rectangular, vertical plane, loop. Open wire feed. Top wire at 45' 1/8 wave verticals. Feed 1/8 wave from a bottom corner (compromise for
Has anyone tried grid block keying of SB200? No manual and wanted to ask a couple of questions before pulling it out of the cabinet. I have a Heath HW-16. This is a low power transmitter and receiver
Thinking about this a bit more, What if I just unground the 2 x T-160L grids to key. I have a few spare 500V MOSFETs. -- From: Bob Duckworth <wb4mnf@atl.org> To: amps <amps@contesting.com> To: <amps@