Slightly off topic but I'm looking for any W5 (texas ham) that might be able to share info on placing an ISP on their ham tower? I am looking at a rural QTH location that does not even have dial up a
I put some on 4 runs of LMR-600 about 3 weeks ago. I presume these are the quick connect with push the center pin in. After a brief learning curve with the stripper tool they all went on without a hi
There is another generation of LDMOS devices that were introduced in the past year or so. Exception robustness on extreme SWR's at all phase angles. These devices are the generation of parts that wil
Been looking at buying some new antennas and momentarily had thoughts of the old KT-34XA. I'm curious if there is a contemporary version (but non-KLM) of that antenna today? Thanks in advance. 73 Mik
Hi Doug, I agree that Rick's proposal is probably the quickest way to determine interaction. Some many years past, we used to use this method to tune parasitic elements on wire arrays by applying sho
Hi Paul and the Reflector, Back in the 70's, Prof. Albright from my EE353 RF course @ U.of Illinois used to tell the genesis of 50 ohm coax story too. A variant of yours it excluded the optimum volta
W9RX slung a full size 40M dipole under his TH6 boom. Check April 1974 QST. Might be able to trapp it for 40m/30m. Mike K9MK Why not gamma-match the boom of the TH-7 as a rotary dipole for 40? Ch
Hi guys, Looking at a new QTH. It turns out that the neightbor to my east is a pilot and flies on occasion from his 2000' long driveway/runway that runs north and south. My property would be parallel
Recently the public outcry on this caused Irving TX area to have more sensors deployed to monitor what is going on (by TX-A&M I think...). http://earthquaketrack.com/us-tx-irving/recent All are at le
I have a pair of 6M2WLC's at 36' and 62'. In the stack (BIP) they will open the band and enable QSO's using scatter. The upper antenna clearly rules on F2 while the lower antenna (or BOP) does better
Hi John, I have several loads of the same or similar ratings. I found you can pro-rate the continuous duty ratings by 2-3X in short key ups, or 50% duty cycle CW. The metric I watch is thermal rise.
Hi Douglas, Maybe you can study using a single set of guy wires that are as step up in size or diameter than recommended (oversized). That might give you peace of mind you are looking for with the ne
Greetings, Stress testing will tell some of the story. However I would not be standing behind that wire when stress testing it just in case it snaps like a bull whip. 73 Mike K9MK/5 It probably works
Greetings, As an alternative, can the steel cable be pre-treated with something like an anti fouling bottom paint (used on boats)? Regarding the guy wire resonances debate, I would recommend Douglas
Greetings, I have an option to put up 80m and/or 160m vertical antennas using Rohn 25 tower, possibly building out the 80m into a 4 square. On 80m, are there any advantages or disadvantages using tow
I concur with Ian. I have used FSJ4 on my 902/1296 Loop Yagi array and never had water issues. But on more that one occasion I had the outer rings on the jacket crack and open up. I was never sure of
Hi Arnie, No truss support needed. It's a gull wing design like the older KLM yagi's were. It is a shorty forty so it is somewhat bandwidth limited. As a dipole there is reasonable rejection off the
I use an anti-fouling bottom paint. Probabaly the same/similar properties as the marine paint. There was some discussion on the top-band reflector the other day regarding a station in Europe that put
Prior to buying this country QTH, I checked to see if the six dirt strips within the 3-4 miles were 'real' FAA airports. They were not so I believe notification was not required. However the usual FA
What about shorting together the circumference in a ring? How does that affect the angle? MK Reading the thread about an effective radial system got me thinking about the pseudo-Brewster angle of a 1