Hi Jan Erik, Concerning the discussion on towertalk... I own 4 Prosistel PST2051 advertised for 2,5m² windload. Two of them got the same failure, the worm-bearing was pushed outside! That happen
I would keep the AL1200 and convert it to GS-35B if the 3CX1200A7 failes some day 73 Peter _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers",
I am thinking of erecting a 4-square for 40m around my 80m vertical which uses 130 buried radials 15-20m long. Will that work if I connect the 40m verticals to the existing radial system? The other i
losses Thank you Tom and others who replied by mail, I think it might be a good idea that I, before starting with the 4-sq, to run some tests with a single vertical on 40 with the possible combinatio
Dave, I should like to suggest that you have a look on the 40m beams manufactured by OH2U http://www.oh2u.com/finnishantenna/products.pdf Finland is well known for its rough climate and a couple of
Hi Frederico, check the reflector on Yahoo concerning details and/or use Google. I read some stuff concerning a modified switchable arrangement for 8 directions with the K9AY loop. With that there wi
It does not matter whether the boom is round or square, what counts is the projected surface of the boom depending on its diameter and if it is less then the surface of the elements or more. With suc
With me it is the other way round. I am not interested what I find at the coax end in the shack, that usually fits the output network of the transmitter. What counts is the behaviour at the feed poin
It is not the case that there is only a big lobe straight up. Over poor ground the maximum of the lobe will be lower. That lobe also extends down to perhaps 15° depending on the ground. At 15°
Hi Dave, That sounds more like a T-match 73 Peter Just received a new TA-33M with TAC-33K feed. I've never seen a driven element feed like this one. Its a clever implementation. Where the two ends of
And its main advantage is 5-7db groundgain. With my dipol at 100´and sloping ground I always outperform on transmit a guy with a 2L-quad@20m 150km away. 73 Peter I have modeled this scenario an
I did that comparison on 40m with dx stations only and it was a big difference. I used a L-tuner with my 1/4 80m vertical above 3km of radials 20-30m long and used an inverted-V dipol at 30m height,
To be honest, I'm not sure what the question is either :-) Folks seem to be equating self support towers with crankups, and who knows what else... Just to clarify the question in my OWN addled brain
You donīt need a bearing then, just a plate from water resistant hard wood drilled or cut out just for the mast diameter. That is done at DR1A on all masts, no regular bearings at all except on the g
I think the majority is using more then an few. 73 Peter, DJ7WW Remember the analysis showing that the loss in radials is the sum of all the I squared R factors from each radial. When we have MANY ra