[AK-VHF] Fwd: RE: Status?

[Edward R. Cole]

>Hi Ed,

snip


>I live West of Seattle on the Olympic Peninsula, I'm in the process 
>of having a 6 meter 1500 watt amp
>built which I'm going to feed into a 6 element Hy-gain from the 60's 
>that is still new in the box.
>My transceiver is Yaesu 625 also never used..
>
>In the 60's I consistently worked meteor scatter into lower 
>California every weekend from here running 300 watts and the old Hy-Gain 6 el.
>Also made an Aurora contact from here to San Diego one Summer 
>Night..which was unheard of back then..
>
>I had though I would see if I could do the same with the KL7 
>stations and is my main reason for wanting to receive the reflector, 
>I also want to try moonbounce once I get things together more.
>
>I thought by my reading the reflector for some time I could get the 
>feel of what would be required of me to QSO with y'all on 6 meters.
>Thanks,
>
>73,
>Kim  K7DGI
>Belfair Wa

Kim,

I'm forwarding this to the new reflector so others will know of your 
6m plans, and a few comments on my own preparations.

I will be getting a Harris Platinum 1100w solid-state TV (chan-2) 
amplifier that has four 400w 4-transistor modules rated for 1800w pep 
output.  It supposedly drives with 12w and runs on 50vdc.  I bought a 
used HP 50v-50amp switching PS (runs on 240vac), and a new-in-box KLM 
7LB log-cell yagi that was part of a state-run meteor scatter program 
on 49 MHz.  The antenna is coming from Steve, KL7FZ (our premier 
surplus buyer/seller here in AK) via Dale, KL7XJ, who will haul it 
back from a small hamfest near Steve this coming weekend.  Steve has 
something like 17 of these antennas, used and NIB.

I will erect the antenna on at 22-feet on a HD Rohn push-up mast tied 
to a 8-foot 4x4 post set in the ground and guyed at 10 and 20 feet to 
the slip-rings that come with the mast.  I will attach 100-foot cords 
to both ends of the 30-foot antenna boom to tie it off for 
pointing.  The cords will be tied at the center of the lines so there 
will be two ends to ground.  I have a lot of T-bar stakes for this.

I am going to remove 50-foot of 7/8-inch (LDF5-50A) hardline from my 
2m-eme tower and connect it to 40-foot of the same cable for a 
90-foot run from the shack to the base of the antenna mast.  I am 
removing 50-foot of LMR-400 cable from the eme tower which will be 
used to connect to the antenna feed-point.  Another short LMR-400 
jumper will go thru the shack wall to the TR relays in the shack.

This is calculated at 0.85 dB loss so est. 900w will reach the 
antenna.  I have a diagram of all this on my website.

Before the antenna is raised it will have to be trimmed to 50.1 MHz 
(per instructions Steve has from the designer of the antenna, Mike 
Stahl, owner of M2 antennas).  It should be an easy mod.  The PS and 
the amplifier will require some wiring mods and fans for the amp.  I 
bought ten 50v fans from e-bay and will use two on the amp.

My K3 is currently set up with an ARR 50-MHz GasFET preamp and 
outputs 8w on 6m.  Running 0.65w it will drive my Mirage A-1015G 
linear to 12w, nicely for driving the Harris amp, or run 125w 
barefoot for ordinary 6m operation.  I have a 3-element 6m yagi at 
55-feet at the present.   So we will be fairly matched in 6m stations 
on power and antenna to try both eme or ms (and Es and Au when they occur).



73, Ed - KL7UW, WD2XSH/45
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