[HomeBrew] Projects

[Ray]

I am 74 years young and no longer want to climb my tower so I am 
building a motorized raising/lowering system for my hinged base 64' 
aluminum tower.  It will utilize a Hulk 2000 AC powered 1 ton cable 
hoist, attached to the tower at 13' and the roof structure of my shack 
at the same height.  Cable loads calculate to about 1200 lbs.

The mount for the Moseley CL36 beam will be a homebrew side mounted 
hinged bracket, so the beam will stay horizontal as the tower is laid 
over on the ground.  Instead of using expensive water proof ball 
bearings mounted in pillow blocks (one commercial approach, great but 
overkill), I will use heavy duty farm style gate hinges, mounted on 
aluminum plates for the pivots.  A little lithium grease on the hinges 
and they will last longer than I will.

I have also built and tested one of two boards for a SS 1 KW HF 
amplifier.  Each board uses 4- MRF150's capable of 600 watts.  It will 
run off of a HD 50 volt linear power supply.  The final mechanicals are 
not yet together.

Additionally, I am building a mid-power divider and a matching high 
power combiner for 2- 150 watt VHF amplifiers to be run in parallel.

I am also building a 2 band automatic 500 watt mobile antenna for 40 and 
20 meters.  It will consist of a HiQ 40 meter HB resonator capable of 
the power and a similar 20 meter series tuned circuit to shunt the 40 
meter coil when on 20.  The 8' antenna will be mounted on top of my 
SUV.  O/A height will be about 14'.  I expect the dual band will also 
work about as well from there.  I have an FT100D driving an Ameritron 
ALS500 in the car.

"Necessity is the mother of invention".  Homebrew lives on...

Ray, W4BYG


On 10/29/2012 4:36 PM, Loren Moline WA7SKT wrote:
> ** Please do NOT cross-post messages when posting to HOMEBREW **
>
>
> Hello,
>
> Out of curiosity is anyone still building things? I would be interested in hearing what you have going. Seems as though there is a limited number of homebrewers still left in captivity!
>
>   
> Loren   WA7SKT
>
> Today's technology is responsible for creating a multitude of brain dead people!
>   
> Member: ARRL and Pacific Northwest VHF Society
> Member: Hearsat Satellite Monitoring Group ....www.uhf-satcom.com
> Location: CN86bx
>                            
>                                   
>
>
>
>
>
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