VK Logger Ham Radio Forum Archive

Hi all, I am currently using up some spare components to build a new VHF amplifier..This may be the last unit I can build for some time...Due to the low Aus$, importing new components have suddenly become expensive and I may have to add the cost to any new amplifiers I build after this unit..

Pics are a new "vacant" amplifier case and a GS-31B triode...If anyone is interested I can build this up as either a 6 or 2 meter amplifier...This will be suitable as a legal limit amplifier, or for use as an EME amplifier for those who have a high power permit...It should be good for at least 600 watts data,800 watts CW or 1KW SSB..The amplifier will be the same build style as those shown on my Logger page..

I can be contacted via email or phone 0355791403...

73...Bob..VK3ZL..

Looking good Bob!

Another fine example of your excellent amps in the making!

I have taken lots of time off due to illness however I have finally finished this amplifier and it has been sold..This amplifier was 2 meters with a 1/4 wavelength plate line output...Everything tuned perfectly at first switch on..With 25 watts drive it has in excess of 500 watts output and runs cool...The air flow noise is quite low using the 6 inch Papst fan running on 15vdc..Drive vswr through the T network is 1-1.I am really pleased with this amplifier and will pack it and send it to the new owner this coming week..This amplifier can be operated remotely via a PTT switch line.

I am hoping to complete the GS-35B 70cm amplifier soon along with my own small two band, 6 and 2 meter amplifier..This uses GS-9B triodes and will be loafing at 300 watts output..

The Australian dollar is staying around 90 cents and I now have to pay a lot more for importing tubes and transformers..This means that I have to add a few dollars on to my amplifiers ..I am currently having some health problems but I am anxious to return to my workshop..

73...Bob..

Beautifully done, Bob. An absolute credit to your engineering nous and craftsmanship.

Wot Roger said above ...^

As a proud owner of one of Bob's VHF amps, I can only marvel at his efforts in producing such fine and AFFORDABLE devices.
My 6m 2 x GI-6b PA from Bob continues to perform exactly as Bob had designed it....robust and over-engineered for reliability.

Thanks again Bob and well done!!

And Ditto.....

Get well soon Bob...you have plenty more of us to inspire!

Regards

Shane VK4KHZ

VK4KHZ wrote:And Ditto.....

Get well soon Bob...you have plenty more of us to inspire!

Regards

Shane VK4KHZ

Thanks for the kind words Shane..I am looking forward to doing another project soon..

Bob..VK3ZL..

Hi Bob, best wishes for your health, theres a few more amps in you yet. My 2 x GI7B amp is working like a dream
best wishes Wayne VK4WTN