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Hello, My name is Victor, I am 54 years old and am married to a wonderful young lady I met 37 years ago.Kathy and I have been married for 36 years now and God bless that woman for having put up with me all these years.

 

I first got my novice license while living in Forest Hill, LA KA5VXU What a HORRIBLE CALL! I used it long enough to get my general about 2 years later and switched to N5JCH.In 1986, I got  WO5S.It was such a PITA explaining that I DO NOT HAVE A ZERO in my call, that I finally changed it to W4VAS.

I love to tinker around with stuff as much as operating, so you are as likely to find me in the back yard making a top section for my tower when I give up on finding one. or building a trap antenna, amplifier etc.

 

My latest projects have been amplifiers.
The first is a GS35B HF  amplifier for 80-10 meters. Output is about 1300 watts.

 

I am not really trying to "sell" these, but I would if someone wanted one.
I'd just turn aroung and make me another one. :)
If you were to gather up all the parts to make your own, you'd see that I am not asking very much for these.

My latest project is a new GS35B HF amplifier.
I had started this one a few months ago and ended up using all but the front
panel and what was mounted to it for my six meter KW amplifier.



My 3600 VDC .8 amp HV supply!


It's the same one Ameritron uses in their 1200 and 1500 watt amps.



I installed 4 vacuum relays and 4 sets of HV connectors with controls to turn on/off
the HV from the RF deck.....


I put the on/off switch, 220v breaker and 2 amp secondary fuse on the front panel so
I won't have to reach around back to get to them... I don't want to risk getting tangled up in the HV!

on 10/30/2016 I completed my latest 6M project. It's a legal limit RF deck using hte GS35B
and is connected to the above HV Pswer Supply.

I still need to add labels, but it works absolutely GREAT!

More photos and info here.

 

 

 

This amp is almost like the one below, but I used a 120mm square fan instead of a squrrell cage blower.
I had to turn the tube horizontal for proper air flow, so mechanically, it's different there.
I also added a filament warm up timer to prevent keying or HV until a 3 minute warm up period.
On 40 meters, I have no trouble getting 1500 watts PEP (about 1200 max on RTTY)

More Photos Here!

When I tested it on 10 meters on the bench with my HTX-100 driving it with about 35 watts drive,
I was getting over 500 out RMS on a whistle and 650 on the PEP scale.

I get my tubes from 2 sources in Europe. Dr. Alex Gaava UR4LL (faster)
and Aundrey at GSTube (Cheaper)

($1000)

 

I built a 2M 1.5KW GS35B amp for a freind a few months ago

Time to start on mine!

 

Here is my 6 meter GS35B amplifier.
3500VDC .6A supply
1kw+ output!


(I $old this one to W4GA)

 

 

 

My 2 meter amp is finished now (10/1/2015)
It uses a GI46B tube with about 2500 VDC and has no issues running 500 watts out


(Sold)

Now I am toying with the idea of building a 432 / 144 amplifier.
Now that I have my new antennas in the air.....

I am selling these chassis for $150 each shipped. Shoot me an email if interested.

W4VAS

 

I run Icom IC-756Pro, Yaesu FT-847 and Icom 551D radios and the above mentioned amplifiers.
I just got an Icom IC-820H dual band UHF/VHF All mode.

 

This is my 7 element YU7EF 6 meter yagi on a 29 foot boom.
Here is the YAGI on the ground just after I finished assembly.

The 2" aluminum boom material was 26' long and I needed 29' so I cut a 4 foot long stick I had left over from a previous project (the 12/17 antenna) and swagged it by hammering it with some 1/4" flat stock to bend in all four sides.

I used some mounting blocks that I got from DX Engineering to mount the elements to the boom. They worked out great!!

 

We installed the antenna on the 40 foot tower on 5/25/2013


432 antenna (YU7EF EF7023) is at 60 feet!
222 yagi (YU7EF EF22214) it at 55 feet 
2 meter yagi (YU7EF EF0212) is at 50 feet
6 meter yagi (YU7EF EF0607) is at about 42 feet,

All antennas are W4VAS homebrew.

 

I enjoy building antennas for my station.
(mostly just following YU7EF's design plans). Thanks Pop!

Recently, I built a 3 element 12/17 yagi of my own design.
I used the A3WS as inspiration, Coaxial Trap Design software by VE6YPto design the traps and Quick Yagi 4 to finalize the spacings etc. (always design the traps just out of the ham band so they can withstand more power)The SWR is perfect at 1 to 1 on both bands.I get very good reports even with the antenna still only about 9 feet off the ground :)

Here is a closeup of the trap (taped up to keep sun and weather out).

I finally got my tower installed and the antenna is now perched on top at about 48 feet.

 

I used a 6" long piece of 3/4" OD 1/2" ID fiberglass tube and some rg58 coax for the traps. I tapered from 7/8" down to 3/8 in 36" sections to make the elements.I can't believe how well this thing works! I have a word document with more info on my web page a http://w4vas.com ifyou want to try making one yourself. It isn't all that hard, especially if you can get 2" square tubing for the boom. I can buy it in 26' long sticks for about $60. The 6' long elements I get from http://cycle-24.com All the antennas I have made, I have used their tubing and it is absolutely fantastic stuff!

About a month ago, I decided to make a Hex beam for 6-20 meters.

I got most of the materials from Max Gain Systems

 

With the antenna literally 5 feet off the ground, I have worked all over europe with 100 watts.
I put it on a tripod on the roof (30FT) and it works fabs!

 

 

 

 

 

7669139 Last modified: 2016-11-07 20:51:43, 11187 bytes

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