Why? Please explain. My PST2051 rotators all run through CAT5 computer cables. 73 Peter I would think the opposite would be true, you could use fairly thin gauge wire if it were and AC Motor. Mike --
It will not take much power to get way more then 1A through a piece of copper wire in a RF tuned system. and when the solder joint is not weather proof protected. 73 Peter ___________________________
I would go for 5" masts or larger on that location for sure. A typical ham rotator on that installation will not last very long. Go for a commercial gearbox and drive like a large garage door opening
But only if the line length is a quarter wave electrically or an odd multiple 73 Peter The 1.5:1 SWR circle for lossless 75 ohm line intersects the real axis at 50 ohms and 112.5 ohms resistive. 112.
Hi Dave, You might use the forecast Software by W6EL to find out about the propagation angles. There is advanced function which shows the number of hops and the take off angle to your target area. A
A vertical dipole normally has a height of half the wave length, that means 82m on 160m. An inverted-V with its apex at 82m for sure will outperform the vertical dipole. You both are not talking abou
If so it does not help much as you still loose on efficiency with a shortened radiator 73 Peter --Original Message-- If I use a HVD thas has a vertical section 60š and the rest is end loading, capaci
I owned my KLM LPA already long before SteppIR joined the market. Advantage is instant band change, no moving parts, no controller, no traps. It might last longer then a SteppIR. Compared to a 3-elem
Take the PST61. The PST2051 wind load data might be too optimistic. I had three times the same fault on three different rotators at not more then 100km/h wind and with a KLM 5-element 20m yagi or the
The original three screws holding the bearing cover were pushed out and so the bearing. Obviously three screws were not enough to hold the cover plate of the bearing in place on the aluminium housing
Commerical user's in EU were next. Spread to NA in the mid 90's. No, was not originated by the German military, type C was used by the military. Type 7-16 was developed and used for commercial broadc
The IEC rating for N connectors is 1KV working voltage and 2.5KV proof voltage at sea level, 40-65Hz. 10KW into 50 Ohms results in less then 1KV, so that is OK with pulsed applications. 73 Peter The
I donīt use any thrust bearing at all but a home made slew ring rotator with the mast flanged to the top of it. To align two thrust bearings will be quite a task with a heavy mast. 73 Peter won't hav
I used that bearing with a KLM 7 element logperiodic on my short tower, it lasted for about 6 month, then it was ruined. I replaced it with a Fafnir bearing which is still working perfect after 8 yea
Hi Jim, Why should one bother for wire and core insulation if the balun will be used to feed a 50 ohms load? 73 Peter use enameled wire.. unless it's got lots of teflon on it.. or has a teflon tubing
Horizontal dipoles have nulls in the azimuth plane verticals don?t have 73 Peter --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.com] On Behalf Of Kel
I donīt think it is a good idea to use saddles with teeth. Those will saw through the tubing on the long run. I use single mounting plates on all of my antennas. Mating plates are welded to the rotat
I bought a used 40m FS Yagi (Finnish Antenna) with similar boom clamps. It was on the tower of DJ6ZM for only 4 years and I will not reuse the boom. I will take some pictures how it looks now. The wi
At least you never need more then 6ĩF in your HV power supply and your mains is not dropping when the air condition or washing machine runs. And I wonder whether your mains breaker is less then 70A i
What happens to the other 8 homes mains voltage if you fire up that YU148? 73 Peter town is all on poles. My drop wire is a mid span drop...between 2 x poles. ________________________________________