About My Scrapbook

About My Srappbook

Here are some notes about the homebrewed equipment that I have made and used over the years. It has all been constructed using the well known KISS approach, Keep It Simple and Stupid. No bells and whistles here, essential features only. I make no great claims for any of it, (some pictures click to enlarge, if you do you will see why I make no claims) other than to say that building it and using it on the air has given me the opportunity to occasionally work some DX, and no small degree of amazement that it has worked at all!radio I hope that in a small way, this website might encourage more home construction, something that can only be good for the hobby of Amateur Radio. After all, if I can do it, so can you, and very likely with better results!

144MHz E's DX

Seemed to me that the E's season this year got off to a pretty slow start but fortunately improved from mid June.  Plenty of contacts on six and four and I was particularly pleased with this two metre one ;-

Distance between IO81WM & IM63NX is 1987.75 km (1235.189 miles)

At the time there was little local activity and after the contact CN8LI went back to calling CQ.

My equipment; homebrew amplifier 200Watts, homebrew hybrid SDR, 9ele Tonna.

Two Metre Interference

Two Metre Interference: has anyone been experiencing QRM on two during the day recently. This horrible hash has been appearing on the band here. At first I thought it must be local to me but then I notced aircraft flutter indicating its was coming from someway off. So turned on rig in the van and could hear in all the way to Chippenham. Anyone else hear it?

"Large spike on right is packet, left spike is GB3VHF"

144MHz 300 Watt amplifier

Been busy making this amplifier recently.
Amp kit from the Dutch RF shop and uses the Freescale MRFE6VP6300 mosfet.
Low pass filter from Homebrew RadCom.
Relay sequencing.
VSWR protection.