K4SAV commented on switching in & out some top loading on an HF2V or switching the linear loading in & out of a shorty-forty element with a relay to work 30: Interesting - what I recall from before w
K4SAV commented about fan dipoles & transforming the fan into something more like two dipoles not in parallel but with a common feeder: I had always thought take off angle had something to do with he
Interesting thread. Sadly, no stacks to hide under here & have on a number of occasions pulled some pretty big arcs off of the feeders to antennas on sunny, cloudless but only slightly windy days. K4
KE3Q added: North, Central or South? ;^) 73, VR2BrettGraham _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", a
They actually touch? Wow - didn't realize some of the elements were _that_ close. F-12 sleeves plus aggressive taper does result in SWR wiggles, but that must be some serious breeze as even on C-3E/A
My most recent work was in satellite b'cast TV, during which also digitized cable TV across two countries & went through so many attempts to do DTH in a number of markets I have lost count. Rain fade
W6RMK added: Yes, installation monkeys usually aren't given spec-ans, but those that I have watched who do have them will do silly things like try to do so with silly setting like 20 dB/div on amplit
K5UJ asked about crank-ups. I have a Hills two-section roughly 50-footer. Once extended, one climbs to top of bottom section to pin the two together with one bolt on each of the three faces. It is gu
One of the things that detracts from towertalk somewhat is what I guess is best described as a tendency for presumption. When it comes to crank-ups, that means not guying them. Yet there are crank-up
W6RMK reminded us: Now registered with QTH.COM, pointing back to factory site. Distributor's domain also registered same. Somewhere between SP, I, W9, VE6 & W5 there must be a reason for this. 73, VR
The modulation scheme used for DTT in USA might help keep the art of working with radio waves, how they propagate & most importantly how to best receive them alive. Things like SWR become important,
N6RK added: First, there are plenty of vendors of kit that could be used for digital ATV which is meant for the lower end of CATV & SMATV trade. The market for this is very much not NA, so may be har
Wonder if anyone has any idea what effect, if any, the rebar in a concrete pole might have on using the pole as a vertical. Have had a little experience with antennas in close proximity to reinforced
K6-somebody (sorry, deleted yesterday's digest - K6IF?) was asking about building gamma matches. Strip sheath & shield off length of RG-8 & shove into gamma tube. Start with length bit longer than wh
Although well intentioned, the feedback on N9LJX's KT34-on-apole installation is interesting as I have had pretty much the same thing here & frankly, tribander-on-a-pole is about all one can do here.
KI4LB's experience after bit of his wire antenna fell down & after slight bit of tweaking of the tuner, seemed no different reminds us that: 1. Anything can be made to radiate, and 2. When it's neces
W6WRT added: When I had a 2-el quad up (elements as squares, not diamonds), both I & the cat noticed that the upper ends of the spreaders were rather coveted places to perch. And judging from the dam
VE4XT replied to W7DDD: Except that we're above ground here, where the radials need to be resonant. I once had far more roof to work against (maybe ten times the area) & was not really impressed with
WD4K's post on experience with MFJ box very much like my experience with ANC-4 here. Pretty much can cancel out anything I can pick up with a decent sense antenna - even sea surface radar coming from