Warren Walsh - K2BM did the excellent work to provide us with this great Adobe PDF file
package for the original sonic server.
Our many thanks to Warren for his time and the great job setting up the entire pdf
file package.
This amplifier layout was based on the famous K2RIW design layout. I'm told that Fred Merry
produced and sold hundreds of this amplifier known as the "ARCOS AMPLIFIERS" (Amateur Radio
Components Service) through the 1970's and 1980's. We just happened to be lucky enough to
locate some pictures of actual W2GN built units shown here.
1) Power Switch on the RF deck
There were also 222 and 432 versions produced and sold, such as the 222MHz version shown
below. Notice the different meter and similar front panel control layout.
After you down load and print out the article, let us know if you build an Arcos amplifier
and consider sending us your "home-brew pics." 73's...
enjoy
We/I get a lot of Email from visitors who drop into these file down load description pages
via a web search "engine" (like Google). Vistors are not able to locate the file download
icon for that specific description page. There is a simple way to find the file download
icons on the main http://www.radiowrench.com/sonic sonic
web page...
First and best: Use the menu icon just below to the main sonic page.
Second: Back space out the page your now looking at in your browser location line. As an example,
using the http://www.radiowrench.com/sonic.so2004.html description page. Remove the last portion
of the web location with the keyboard back space key to read http://www.radiowrench.com/sonic
then press your Enter Key to reload the main sonic page "just in front" which would probably
has the inforamation you're looking for. This works on most of the current browsers at most web
sites.
Third: You can always contact me using the Email Icon below. I'll try to get a back to you
asap with a practical answer.
2) Screen voltage adjustment so that both tubes will precisely share the load,
3) The blower AC from the amplifier chassis
4) Antenna relay powered from the amplifier chassis
5) The "higher quality Weston Meter" I-G, I-S1, I-S2, I-P and E-P
6) The high quality McClean Engineerying 75 CFM blower with air switch which shuts down the
amplifier if the blower fails
7) Direct drive of flapper controls
8) PA switch which controls antenna relay control circuitry to bypass amplifier without
turning it off so that the exciter can be connected directly to the antenna.
Quality and craftsmanship appear to be first rate!
skipp
Enjoy, come back when you can...