<< Yes! or the Measurements corp. (Boonton) Model 59, or the PRM-10, the Navy version. They are all basically the same, using a real acorn tube osc. and going up to 400+ MHz. Vert sensitive, and a jo
<< In a message dated 9/18/01 6:02:31 PM Pacific Daylight Time, ve9aa@nbnet.nb.ca writes:<< Frank, et al Guess I missed the original post and the subsequent ones, but FWIW, I've tried hundreds of ant
<< Another concept is to make it long enough to a "Create 160 Ohm" Rr feedpoint and match it with 90 ohm coax. This improves the ratio of Rr/RLoss for the same radial system and that is always benefi
Brian: I thought I'd have to explain this even more and didn't do it enough. The 1/4 wave 90 ohm stub matches 50 ohms to 160 ohms which I suggested adjusting the L antenna Rr to making it longer than
In a message dated 9/19/01 7:20:46 AM Pacific Daylight Time, alsopb@gloryroad.net writes:..<< 1.) This formula assumes a pure resistive load. You don't have that. 2.) Second, where does one get 90 oh
In a message dated 9/18/01 9:57:59 AM Pacific Daylight Time, john-k1rc@juno.com writes:<< Hi all, I'm in the process of cleaning up/refurbishing a tribander for the winter season. I cleaned out all t
<< Now hear me out BEFORE you laugh... and THEN tell me why this isn't a good idea! Ever since the '60s I have used Vaseline on all outdoor antennas. This obviously includes all nuts and bolts, but a
In a message dated 9/23/01 3:51:25 PM Pacific Daylight Time, kk9a@arrl.net writes: << I tried a vertical array from ZF2 and it worked very well 1 meter from the water. I believe that you need to be c
<< Hi TT ers Back in the late 50's, my dad and I had a ground plane antenna on the roof of our house. We used silicone in the coax connector to keep water out...it MAY have been suggested in the inst
Silicone grease...the clear type used under transistors for heat sinking. Try using the grease in a "Jones" plug, leaving 12v DC power applied continuously between adjacent pins (fuse the leads of c
In a message dated 9/19/01 12:48:28 PM Pacific Daylight Time, alsopb@gloryroad.net writes: << K7GCO. Wrong philosophy. Try the products first in the model and if it doesn't provide any improvment thr
In a message dated 9/25/01 10:20:39 AM Pacific Daylight Time, w5kp@swbell.net writes: << I don't know either of you gentlemen, so pardon me for interrupting, but could you please take the back-and-fo
In a message dated 9/25/01 7:28:00 PM Pacific Daylight Time, k4bet@bellsouth.net writes:<< There are several types of silicone grease and these different types do react at different frequencies and a
In regard to possible BC station interference as outlined below, the BC signal can generate a 2nd harmonic in the receiver. Hi-pass filters that allow passage of frequencies above say 1.7 MHz block t
<< I noticed in the books that an in line 3 vertical assenbly would have the following current magnitudes at a particular phase angle. My question is why is the middle vertical at an magnitude of 2 w
In a message dated 8/13/01 8:34:17 AM Pacific Daylight Time, jack@antennex.com writes:<< In a message dated 8/13/01 7:35:47 AM Pacific Daylight Time, ford@cmgate.com writes: << Any document using Ant
<< In a message dated 8/14/01 6:04:47 PM Pacific Daylight Time, coneal@ma.ultranet.com writes: << So, the question: Would an 80M inverted V a few feet below the C3XLD have a negative effect on its pa
<< n a message dated 8/19/01 9:52:28 AM Pacific Daylight Time, W4EF@dellroy.com writes: << Hi Bob, I don't know about 75 ohm options for the Bird 43 or Coaxial Dynamics wattmeters. You might want to
<< Hi, Jim: Fwiw, I wrap the s/s clamps with tape, and secure the cables to legs. Minimal abrasion that way, they're re-usable, and so on. 73, Dave, K3BHJ That's a good idea but I feel a bit narrow.
<< An efficient way to ground-feed a 1 or more halfwave inverted V is with a remote controlled L-network. Fair Radio Sales sells a Collins c. 30uH DC motor driven variable-inductor that wurks well fo