I think a 2 el tribander will beat the pants off a G5RV on 10 15 and 20, even at 25 feet. On those bands the G5RV pattern is complex, and the station you are trying to work could be in a deep null. I
My buddy W7WW in Yuma got a list of capacitors from ICE after he smoked 10 meters. I just talked to him on the phone. He says, for 20 meters: resonating: 2 - 940pf each coupling: 240pf As I remember,
By the way, you can unsolder the capacitors and measure the capacitance value pretty accurately using an antenna analyzer in the capacitance mode. Look for large changes in value. I would bet on the
-- I don't know how stable polypropylene would be at 14 MHz in a tuned circuit. The ones I've used successfully in the past are the mica CD15, CD19, CDV16 and CDV19, all on page 838 of the Mouser cat
-- I never had such a problem with my Six-Pak using a full regulated 13.8 vdc drive. When I added some steering diodes into the relay selection logic to do some specialized switching, the relays woul
-- It sounds like there is a problem with the starting capacitor, centrifugal switch, or starting winding. I recommend removing the motor and taking it to an electric motor repair shop for diagnosis/
Ratcheting box wrench Dave Hachadorian, K6LL Yuma, AZ _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com h
This thread reminded me that I need a new soldering gun. My old 100/150W one is held together with duct tape. I just ordered a Weller 200/260W (mentioned on the K3LR website) from these guys: http://
If the swr is totally non-responsive like that, it is likely either an instrument problem, or a problem in the driven elements and feeding system. Try this: 1. Try a real swr bridge, instead of an an
This is the second classic typo today. The first one was about the crackup tower. Keep 'em coming. Dave Hachadorian, K6LL Yuma, AZ _______________________________________________ ___________________
-- When I was about 18 years old, I made 100' of ladderline using #14 hard-drawn copper wire and those little 2" ceramic insulators made by E.F. Johnson. I had a hell of a time getting the wire throu
-- Here's a source of true ladder line: http://www.trueladderline.com/ Dave Hachadorian, K6LL Yuma, AZ . _______________________________________________ ______________________________________________
I helped a friend do this once. We tilted the LM-470 over, disassembling the booms of several antennas to let the tower get horizontal. Then we slid the mast out almost all the way, and pulled the ro
The issue is not the weight of the antenna, but the surface area it presents to the wind. Rohn's data on bracketed towers is pretty sparse. They show one example with a bracket at 66' on a 90' tower
-- I would try the booms in parallel, and then do front-to-back measurements on the two antennas. If the front-to-back ratio is near spec, you can be pretty sure that the gain is ok too. F/B ratio is
I never had a relay problem with my Six-Pak using a full regulated 13.8 vdc drive. When I added some steering diodes into the relay selection logic to do some specialized switching, the relays would
Try your local DirecTV or DISH dealer. Sometimes local channels are not available in HD on satellite, and they may have contacts with some off-the-air antenna installers. Dave Hachadorian, K6LL Yuma,
As previously reported on the reflector, Arrow Electronics is a good retail source for these, $5.24 for the 2631803802 in unit quantity, but their stock is low right now. Dave Hachadorian, K6LL Big B