Everything stretches and wears. If you have enough adjustment range, take out a full link and put in a half link. Farm supply stores have all this stuff. Keeping a chain tight enough SHOULD involve i
As others have correctly stated, it is an OWA style design so it is closer to a 3 element on 76 feet, which is a bit short still, but in in the 9 1/2 years that it has been up, it has been a good per
any case neither would be my choice for long lasting radials, depending on your soil characteristics. I'd visit the scrap yard first at the local telco and look for multipair telephone cable.... I h
WD-40 works so well for this that there is no need to look for anything else.... 73 Don VE6JY _______________________________________________ _______________________________________________ TowerTalk
yes just a reed switch. I've experienced the "turns one way but not the other" problem intermittently a few times... it's either been a damp control cable or a damaged reed switch problem. Never had
Delhi made two styles of self supporting tower - the original necked "coke bottle" design and the more recent uniform tapered sections. Both can be extended with straight sections to significant heig
Yes 4000 is in the ballpark for both cables. That would be breaking strength. There are many other ratings for cable that try to establish a "safe working load" (SWL) or the more modern "working load
Unless you have special link breaker tool (such as this ebay item 260177532163) you'll need a small angle grinder (or do a lot of filing) and a punch. A flat backing plate to hold against it while yo
You don't say if the SWR of this antenna changes when this happens. I wouldn't look towards the antenna as the only cause - some amps have coupling caps that can't take the current on lower frequenci
Your questions raises more.... Is the hi pass filter the VERY first thing in the line after the switch? Try taking everything out of the line (esp power meter sensors). Has it always done this? If no
In lieu of a spectrum analyzer. a portable SW rcvr tuned to one of the IM frequencies is quite adequate to show a change if you manage to physically upset the source of the IM. The chain link fence i
If the boom was a uniform cross section (it is) and had no other weight loading (it does), I would truss it at the 2/3 point from the center. This leaves all unsupported sections an equal length. Sin
Put one in and measure it. Then you know. Everyone is quick to say it's not enough and to do "what the manufacturer says". What you need to do is have a safe and practical installation for your tower
They were 43" long with a 4" helix, 5/8 shaft and inserted to within a few inches of the ground and into our firm Alberta heavy clay..... They were galvanized and had a welded eye. The welding on the
Hi Rick; If your QRZ picture is current, it looks like the tower is a 48' self support Delhi (Canadian "version" of the Rohn BX but not as strong) I'd be nervous enough with the current windload, le
The guy position should be just below where the sections join so that you can get the guys on a section sooner.... important if you are building the tower section by section (i.e. not using a crane).
MFJ is one of our US resellers. We are just getting things ready for the annual trip to Dayton so hope to see all of our friends there... Alfa Radio will be in our usual Booth 205 location. 73 Don VE
If I have a choice, I always prefer to make the truss support an integral part of the antenna - not the mast. Since I home build most of my antennas I can do that, but I have modified several commerc
Too late now, but maybe helps the next guy - always have a quantity of boulders or large rocks around (they are plentiful here) and you can just add as little or as much as you need to fine tune the
If you have insulated guy wires, no galvanic current can flow. If not: insulate them.... 1 amp for 1 year consumes 20 lbs of anchor - so even a few milliamps over time from a small earth potential di