...while mine has a particular liking for large parabolic dishes. Both may be prepared to undertake consultancy work, and to appear as expert witnesses at suitably inflated fees. -- 73 from Ian G/GM3
Confirmed by http://www.wd40.com/Brands/wd40_faqs.html -- 73 from Ian G/GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek _______________________________________________
For an untidy packaging solution, some years ago a G station produced a large cardboard box with four coax leads, labeled "10m Station", "15m Station", "20m Station" and "Connect Tribander Here". It
In other words, foamed heliax with a solid copper sheath. The sheath is firmly bonded to the foam, so water cannot creep along the inside. The big advantage is not the low loss, but its ruggedness. I
Slightly under - 1-29/32in. The steel ones were originally based on "1-1/2 in" water pipe schedules, though they have their own specifications now. The aluminium version is a special tube with the sa
limitation. Jim Lux replied: [...] [...] ...and there the topic ended. Could I revive it with a slightly different question, please? I'm planning a 40m 4-square on a lot that isn't quite big enough.
On the other hand, if you happen to be operating in the middle of a switch-yard, all those parallel rails make a great reflector for NVIS. And if you have to haul up a tower, you can flag down a pass
the element arced to the boom which is grounded. The relay contacts were in the middle.<< To cover all possibilities, it seems like you'd need three spark gaps around the outside of the relay box: on
May I recommend DL5SWB's Mini Ring Core Calculator? http://dl5swb.de/html/software_for_amateur_radio.htm It has a large library of core data from many different manufacturers, including dimensions an
Thanks, Dick - I've been keeping those big old transformers for *something* useful after all... -- 73 from Ian G/GM3SEK _______________________________________________ See: http://www.mscomputer.com
Not really - they work very much like bipolar zener diodes, by clamping the transient voltage. The clamping action isn't very strong, so a large spike may still rise to 2-3x the normal operating vol
Thanks to everybody who replied, both on- and off-list. Lots of interesting ideas, all the way from KISS to full "industrial strength" remote control. We're away to the new QTH in Scotland for the co
I'm starting to lay out a new HF/VHF home station on a 1-acre site... and can already see the numbers of 200-500ft control cables expanding out-of-sight. Obviously there is a basic minimum of links t
Hello Gary Actually it doesn't work out that way. You're still heating the plug body fast enough to avoid softening the cable inside. What it does guarantee is a good solder joint to the plug body, d
Actually it doesn't work out that way. You're still heating the plug body fast enough to avoid softening the cable inside. What it does guarantee is a good solder joint to the plug body, down through
Two additional H&Ks: 1. Unless the plug is silver plated, it often helps to clear the plating out of the solder holes, so you're soldering to bare brass. 2. If you pre-heat the plug body with a hot-a
http://www.ifwtech.co.uk/g3sek/clip-on/clip-on.htm -- 73 from Ian G/GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek _______________________________________________ See
I have held 2250 watts to a dummy load(refrigerigation cooled) for over an hour uding 5/8 heliax at 50MHz with n connectors. No problems encountered. Also, no problem on 144 cw running legal limit du
There a re a couple of other wire label options. 3M and maybe others make wire labels that have a white surface to write info on and a clear portion of tape covers the writing to preserve it. Another
WOW! What a great help you guys have been. I now have a handle on the procedure of this critical connection to the outside elements. Putting all theese emphirical solutions together I will proceed wi