I am trying to power up an HDX5106 MDPL-1000 winch motor controller, and need wiring info. UST sent me 3 pages of drawings, but there are still missing pieces, such as, does the motor run on 240VAC o
Thanks to all who replied. I have a real wiring diagram now thanks for W4QN, and understand about the delay, etc. If anyone wants the wiring diagram, I have a .tif file of it that I can email. Tomorr
I bought one of these new in 1984 when the company was called Tristao and Lou Tristao didn't provide anything in the way of instructions then either, although I did get UBC calcs. I was able to look
I acquired a used rotator that looks like an OR2800. I notice that the M2 web site says "New: DC motor". Does the use of the term "new" mean that older OR2800's had AC motors? If so, how can I tell w
Can we just ask compuserve to set up a dummy account geo888@cs.com so this mail won't bounce? Seems like the easiest thing to do. _______________________________________________ See: http://www.mscom
I posted recently about a rotator that looked like the OR2800 on M2's web site. I opened it up and discovered that it has an AC motor and a 500 ohm pot, not a pulse generator. The motor label said Or
Besides the DSP predistortion you mentioned, what are these "new amplifier design approaches?" Do they work with an arbitrary load impedance? What kind of efficiency are you thinking of? BTW, DSP pre
One time I called CQ on 17 with my 4 element SteppIR (at 50 ft) and several callers came back. After I signed with the first one, a bunch of stations were calling me. Next thing you know, I had a pi
10.6 9.5 Conventional designs are "optimized" in the sense of covering the whole band. The SteppIR is optimized at a single frequency. This the SteppIR, as a "monofrequency" antenna, should be able t
I believe someone else said they used a step attenuator. Secondly, they were doing differential measurements between a dipole and a SteppIR, not absolute measurements of power. In any event, the 141
You don't use 10dB/div. You use 1 or 2 dB/div. You don't use the vernier attenuator at all. The 141 is a red herring. Unknown antenna range effects are the real issue. Rick N6RK (who owns three 141
You need to use the version of the Hazer that rides on tracks on the side of the tower (Glen Martin Hazer 7 I think). You still need to figure out how to attach the tracks to the tower, but it does
Some tuners won't tune a 1/2 wave wire, since the impedance is 800 to 3000 ohms. There is an easy fix for this; put a doorknob capacitor of 50 to 200 pF from antenna to counterpoise. Now your tuner
Maybe I wasn't clear: the capacitor is in SHUNT with the antenna. Shunting a basically resistive load with a capacitor will always decrease the impedance. This is a standard trick with HF marine rad
The high pass filter will transform any impedance other than 50 ohms to a different impedance. Thus doing the above downgrades your 259 to a very expensive VSWR meter (not an impedance meter). If yo
Attach one guy very loosely at the 50 foot level in the opposite direction from the power line. Then it will do nothing unless the self supporting tower actually fails. In that case, it won't stop it
Also see: http://www.n6rk.com/7_hex_array.pdf which has more gain than the 9-circle and a much simpler feed system (to get 6 directions) and a little more complexity to get 12 directions: http://www.
There is already a "Remotebase" reflector on qth.net. It seems like it would be better to use this list rather than starting a splinter group on Yahoo, unless there is some advantage to Yahoo Groups
I used the falling derrick method for my 50 ft 18 inch face Glen Martin Hazer tower. See: http://www.n6rk.com/falling_derrick_gme/falling_derrick_gme.html Also, K3ND can send you photos of his Rohn 2
Anyone know about New irrigation tubing $1.50 to $3.00 per foot. Used 1/4 to 1/2 that cost, sometimes even cheaper, or free. Rick N6RK _______________________________________________ See: http://www.