Help: Amp Building

[cp]

I am thinking of building a 2m or possibly 2m & 70cm amp.

How difficult is this task going to be and where should I start to look
for help.

I have some electronics bulding/soldering experience and would just like
to build a piece of my own equipment...

Thanks.

[Leland C. Scott]

You can get a good start buy getting a copy of the ARRL Handbook, a copy of
the ARRL UHF/Microwave Experimenters Manual and a copy of the ARRL
UHF/Microwave Projects Manuals (Volumes 1 and 2). All three of these books
have good design and construction info in them.

I would also suggest that you check out the following URL's too for ideas.

For tube amps ...

Good design article for screen and control grid power supplies.
I would read through his material BEFORE building anything.
http://www.ifwtech.demon.co.uk/g3sek/

Same sample 50Mhz amplifiers.
http://user.itl.net/~equinox/kw.html
http://user.itl.net/~equinox/amps.html

Good for tube data sheets.
http://www.svetlana.com/docs/tubeframe.html

Super design article for a 2M amp!!
http://www.svetlana.com/docs/TechBulletins/technoteNo42.html

Good general design points.
http://www.svetlana.com/docs/TechBulletins/appnoteNO.4.html
http://www.eimac.com/cf.htm (This will be a good reference when done!!)
http://www.winternet.com/~biro/articles/VTspice.html
http://duncanamps.simplenet.com/software.html (PS cal's work for V/UHF too.)
http://duncanamps.simplenet.com/technical/technical.html (May find something
useful.)

Source for Plate Power Supply transformers.
The price maybe high, but at least you can get one if you
can't get it anywhere else.
http://www.pwdahl.com/

Source for tubes and other amplifier parts.
http://www.rfparts.com/index1.html
http://www.rell.com/edg/bcstline.html
http://www.burle.com/

Now If you want solid state ...

http://www.ibelings.com/n4ip/mrf157.html (Sample 1KW wideband amp to 6M)

Good source for transistors.
The test circuits serve very well as the base for a complete amplifier.
These
test circuits also include a parts list and PCB artwork too!!
http://mot-sps.com/sps/General/chips-nav.html

You can call Motorola and use their fax back service to order the following
application notes which you will find useful.

AN-791 "A Simplified Approach to VHF Power Amplifier Design"
AN955 "A Cost Effective VHF Amplifier for Land Mobile Radios"
AN1037 "Solid State Power Amplifier 300W FM 88-108 MHz"

Good Luck

73's
Leland C. Scott
KC8LDO

cp wrote in message <7gj6d4$p...@newsops.execpc.com>...