Comment inserted below: Why not keep the critters out definitively? ... stuff the pipe with STEEL WOOL .. or some other material that the 'critters' won't chew? Don - N8DE
In my opinion, the best coax switch that has SO-239 connectors in the rear is the old B&W model #375. This is a 6-position switch. You might find one at your radio shop .. or on 'ebay'. Don - N8DE
Jim, The best method is : 1. Loosen the rotor from the rotor plate and the rotor plate from the tower. 2. Seat the mast centered in the top of the rotor. 3. Firmly attach the mast in the rotor. 4. Fi
You can use 93 ohm or 100 ohm coax, if you wish ... in fact, the 75-ohm will probably work even better than the 50-ohm. [Assuming that you will put the antenna near a 1/2 high - this will give a feed
This query is for those with knowledge of beverages and their idiosyncracies: When designing/installing a beverage antenna, would it be preferable to have the antenna wires follow the contour of heav
When you raised the antenna to 80', did you measure the resonant frequency AT THE ANTENNA? .. or at the end of a piece of coax? The ONLY way to 'get it right' is to do ALL measurements AT the antenna
Steve, Comments inserted below: That's true, IF you're only interested in what impedance the rig/amp sees! If the resonant frequency of the ANTENNA, and NOT the SYSTEM of antenna/feedline is of ANY i
Gang, In an earlier post, I mentioned a large number of old carbon composition resistors that I have. Having checked over 100 old carbon resistors with my DVM, I'm sorry to report that the old-timer
I just received an email from : artw4aa It is infected with a MIME v*i*r*u*s that opens automatically upon receipt. My INBOX is corrupted .. and I cannot receive email now. Not sure if I can retrieve
Did you attach NEW coax before making the measurements? Coax, after 20 years, will exhibit some terrible impedance characteristics! Second possibility .. those traps might have lots of insect nests i
How about a gamma match? Feedline is isolated from a 'physical connection' by the gamma capacitor. In the 'Mosley match' .. this is a similar situation .. the 'coax without the braid' acts like a gam
Comments inserted below: This should be your LAST choice .. you want domestic QSO's .. the prime angles of radiation from this antenna would be better for DX. This would work .. but be very time cons
I'll second the huzzah's .. At the age of 59 [6 years ago] I was at the top of my 65' tower .. on a VERY hot day .. when the heat made me pass out .. thank goodness I had my safety belt/harness attac
Comments inserted below: Obviously, the mathematical functions utilized within the modelling program do NOT vary when the height above ground [or HAAT] is 'excessive'. This is one of the reasons that
Pete, Perhaps my use of the word 'excessive' wasn't quite correct for the situation described, but the results of modelling are still IDEALIZED. You say you don't agree .. but then you talk about a '
Can anyone comment on using 'titanium steel' bolts/nuts for this purpose? They are readily available on the 'surplus' aircraft hardware market. Just wondering! Don N8DE ______________________________