G4FPH's Amateur Radio Pages

G4FPH's Amateur Radio Pages - Links

OK then! Accepting the fact that all web sites do have to have some links, here are a few of my favourites. There are a few below which illustrate that the art of homebrew is not dead. Amplifiers are a real interest for me. I found these sites while looking for information on Russian triodes (N2DX's site in particular is good for this). See if you can spot the 1 x 4CX10,000 and 2 x 4CW100,000 PA in amongst the following (neither of these are mine). As one of the sites says, some of the pictures take a while to load, but the wait is well worth it. Enjoy!

Svetlana valves. Useful transmitting valves at very reasonable prices! Good technical data here too.

UK based supplier of Russian valves. The GS-35B I ordered came in less than 2 weeks!

Non-UK based supplier of Russian valves.

US-based supplier of valves various.

Compact transformers for amps. I like the US expression 'pole pig' I saw somewhere, meaning a transformer recycled form a former life in mains electricity distribution business. Presumabley these weigh a bit, hence the pig!

US-based maker of useful boards for amps. I fancy one of the relay switched tuned input boards for my GG PA. Now where did I put those US dollars?

Great pictures of homebrew PA. Some designed for the full 10 Watts.

Larry, W7IUV's assembled pictures of homebrew PA. I'm beginning to suspect that some of these amps might be capable of more than 10 Watts.

German stuff. I have a lot of respect for German enginnering. Particularly of the kind to be found here.

The glow from these must be a sight to see. Dial lamps probably 10 W or more! I did find a German site selling new old stock QB5-1750 (4-1000) for about 50 Euro each. If anyone has any bases for these valves, I could use one.

Japanese stuff Can't understand much of this site, but as they say, a picture is worth a 1,000 words!

G4ICD 50 MHz PA using a Russian GS-31B triode.

A UHF repeater running 1500 W RF!

Martin G4FKK's site. A tidy shack plus the warm glow from a HB 813 PA.

Dave G3YXM's site. Lots of real gen on LF operation, plus details of solid state PA designs using low-cost power FETs. (Please note that 'low-cost' refers to the final design arrived at after blowing up a minimum of 4 pairs during development!)

Reg G4FGQ's site. Lots of free aerial and transmission line modelling software.

Davemade Amplifers.Interesting US-built amplifiers here. Personally, I would never have thought of using a 3CX3000A7 in the car - but if you have, this guy will build you one! I particularly like the reminder to 'please follow all FCC rules and regulations'. What's the power limit for 27 MHz CB in the US?

K4XL's Boat Anchor Manual Archive. A great on-line source of manuals for radios from yesteryear.

EI9GQ's Homebrew Radio Page. Great source of practical stuff. Best put the soldering iron on before following this link!

W7EL's Antenna Analysis Software. Home to EZNEC, including a free download of the new Windows version, useful for simple aerials.

N3EQF Logging Software. The DOS version even runs on my old 286 PC!

Planet Microchip. Home for free information on PIC chips (including 16C84 and 16F84 types) and a free download of the integrated development environment.

Last modified: 4 June 2003