Tim, you mention below that the elevated radials and the control box must be choked. What's the general advice on the choke for each end of the line? 73/jeff/ac0c www.ac0c.com alpha-charlie-zero-char
My mistake - yes it's N6LF. From QEX March/Apr 2012. A 2-part issue dealing with elevated radials specifically. 73/jeff/ac0c www.ac0c.com alpha-charlie-zero-charlie --Original Message-- From: Joe Gia
Thanks Tim 73/jeff/ac0c www.ac0c.com alpha-charlie-zero-charlie Hello Jeff, I like using the W0IYH style of choke in this application. It has several K ohms of CMI and goes right in series with the R
I've done element loading and reversing using center switched loads at the end of a coax line just as K1TTT mentions. Works FB. Plus you have to contain the voltage pickup in the control wires headin
There is literally no benefit to do the switching at the ends. But there are a lot of reliability issues so why take the hard road when there is no performance increment - and at the same time the he
Ive been trying to get the L5PDF-RPC to mount on some AVA5 hardline. It seems to not make contact with the center conductor no matter what I do. Its a pretty old connector that Andrew has not made fo
I've done some work with attic antennas and can offer some advice. 1. Use a balanced resonant antenna if at all possible. That means dipole. Using a non-balanced antenna is a recipe for having tons o
Looking for the assembly instructions or whatever sort of manual came with these ancient Telrex beams. 40M329 3-element linearly loaded 40m beam 20M646 6-element 20m beam Appreciate any info you may
Unless you have personal experience with real estate documentation in the state you are moving too, engaging Fred K1VR is cheap insurance, relatively speaking, if you really want to be sure. 73/jeff/
Im considering putting up an LPDA this summer to augment the existing stuff. The LPDA would serve two purposes: 1. 30m/17m/12m DX chasing. I suppose that really means 30/17 as I cant remember the las
Thanks to the storm that blew through Monday the antennas here took a serious hammering. It was not quite big enough to be a tornado based on the limited ground damage - but we sure had the freight t
As featured in ON4UNs book ed.5 section 7.2. Looking for comments on this configuration. Especially if you have actually built it or modeled it. Pros and cons welcome. Im considering it because the a
The most popular 80m rotatable antennas here in ice and wind prone Kansas are known by the local nickname of "stuff you mow around." As in "it came crashing down in the storm last winter - and by the
If you have some of these excess to your needs, kindly contact me off list. Thanks! 73/jeff/ac0c www.ac0c.com alpha-charlie-zero-charlie _______________________________________________ ______________
Bought mine from DXE a few years back. Trio of monobanders at 70' - we had winds of 80 mph in March - it's still spinning just fine here. 73/jeff/ac0c www.ac0c.com alpha-charlie-zero-charlie My old r
I am using a mobile crank-up / tilt tower for some antenna testing that has a top section too small to get a ham4 rotor in. Unfortunately that means I need to mount the rotor on a pole that extends f
Sorry for the confusion. Not contesting at all. This is just a temporary set up to let me check pattern & SWR before mounting it up on a separate permanent tower mount. The rotor would be on some sor
Dave, If you are reusing the telrex elements for part of this you will want to put your build into a mech anal program like Yagi Mechanical or similar and check out the wind survivability. The 40m 3-
Im pouring concrete for a tower base using a bottom section standing on gravel in the hole. I had assumed that would prove some UFER ground benefit but wanted to ask because before placing the sectio
The rustolemum pro spray is conductive. I sprayed a segment of aluminum tubing with 3 coats of the stuff; nice and thick. After drying a few days, taped some fine stranded wire spread out over the to