ORIGINAL MESSAGE: -- REPLY FOLLOWS -- Relays always have a certain amount of parasitic capacitance between the relay armature and the coil winding. To isolate this, be sure to put adequate RF chokes
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- All you need to do is make sure that any wire that falls on the electric fence is at ground potential for 60 Hz and/or DC. I would recommend a simple RF choke of
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- Good idea. How about a relay which turns the fence off automatically when the AC is applied to your rig? That way you couldn't forget to turn it back on again. 7
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- You have apparently not met Mr. Murphy. :-) 73, Bill W6WRT _______________________________________________ _______________________________________________ TowerT
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- Let's hope not. I don't mind paying for the engineering that goes into a good antenna. Mr Bill _______________________________________________ __________________
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- Be careful with a "DC block". If the antenna first touches the energized wire during a peak of the cycle, a 5kv pulse will occur and will be definitely be couple
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- Yes, you do need radials, but you raise an interesting question. If your multiband vertical is full size, I'm wondering how well a parasitic element will functio
Has anyone had any high power problems with the Cushcraft balun supplied with the X7 triband yagi? They rate it at full legal power, but it seems a bit small for legal limit RTTY contesting. I'm almo
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- A screwdriver type is good on most vehicles, but not if the coil has to be near the vehicle's body, which it probably would on a SUV unless you mount it on the f
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- One thing I would try first to fix this is to install a choke type balun right at the base of the antenna. A mobile antenna is inherently unbalanced and large RF
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- I can't speak to verticals, but snow has affected every other kind of antenna I have had, so I would say yes, do something. How about a heater? Bill W6WRT ______
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- Clean snow is also a good dielectric. Ask anyone who has had a few inches of it on a trap. :-) Bill W6WRT _______________________________________________ _______
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- It all depends on how one defines "okay". :-) Bill W6WRT _______________________________________________ _______________________________________________ TowerTal
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- Also, doesn't anodizing fade in the sun? I've seen vehicles with what looks like black anodizing and it can get pretty faded. Bill W6WRT ________________________
I need some advice on using ladder line if you would be so kind. I have a Palstar AT5K 5kW tuner but sp far I've only used it with coax feed and a W9INN trap dipole. I'm considering using my 160 mete
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- Changing the subject slightly, what is it exactly you are shielding the loop from? I have heard of electrostatically shielded loops but never quite understood th
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- That makes sense, although I would not have thought that balance to ground would be important enough to worry about. I dont' recall seeing this a consideration w
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- I just placed an order for the W7FG antenna/feedline combination and will give it a try. The spark plug idea sounds good too, although I would still disconnect t
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- Of course you can have a consensus. The consensus may be wrong, but it's still a consensus. :-) Bill W6WRT _______________________________________________ ______
ORIGINAL MESSAGE: -- REPLY FOLLOWS -- I'm sure it could be done if you really wanted to, but wooden poles are passe for a very good reason: They don't last and require a lot of maintenance while they