Recall also that the common-mode circuit for coaxial line is on a separate conductor from those carrying the differential-mode signal, creating a "three-wire" system in which the common-mode current
I just found out that Alf Sommer DJ2UT, founder of Sommer Antennas, died on May 11th. He lived the last years of his life in Geneva, FL as AK4UT. 73, Ward N0AX _______________________________________
I had a two-element Gem for nearly ten years and it worked very well in a good location. Quads seem to do slightly better than Yagis at very low angles - very important for low-power/QRP guys like me
Jim, Jim, Jim...ALL ham radio reflectors are RadioShack (no space) bashing reflectors! This is one of the Sacred Topics that all ham radio reflector subscribers bash at times! Others include... No-c
There are two answers... 1) You take tools back? and 2) Until he comes over and whacks you with the plastic owl. 73, Ward N0AX _______________________________________________ _______________________
That would instead be haz-ING. You only need pick up the phone and call any local fraternity house senior for a complete list of services. 73, Ward N0AX _____________________________________________
No - it's papain - an enzyme that breaks down protein in the meat. (http://en.wikipedia.org/wiki/Papain) The enzyme is obtained from the papaya and breaks down the venom proteins. Here are some idea
All recent Handbooks also have the W3NQN BC Band Reject filter design in the RF and AF Filters chapter. (pp 11.44-45 in the 2011 edition) The filter can also be built with air-wound coils in a larger
All of the specified values are available and appear to be in stock: http://search.digikey.com/scripts/DkSearch/dksus.dll?Cat=131088&k=polypropylene%20capacitor I don't know if W3NQN changed the valu
I just went to the Digi-Key site and checked each value: Enter "polypropylene capacitor" in the part number search window. Click "film (4,665 items)" Highlight "Panasonic" and "Apply Filters" In the
I put one card in from each continent - it seems to help :-) For an interesting touch, I also inscribed the abbreviations for each major directionin the top surface of the pour - EU/SA/JA/VK/AN/CAR/A
Point of order...these tools are actually "Spark plug BOOT pliers" and they are used to remove the rubber-like cap from around the plug. They aren't strong enough to be spark plug wrenches that actua
I'm really enjoying the multiple threads and discussions that started with baluns and have come around to an analysis of the entire antenna system. That changing just one element of the entire system
A cautious word of defense on Mosley...the PRO series was definitely not the top performing tribander in the tests (www.championradio.com) but they are built like tanks (that also means they are very
That is correct. We used a Force-12 1:1 bead balun (i.e. common-mode choke) on all of the other antennas, including the reference dipole, except for the KT-34XA which came with a 4:1 balun/transforme
Mosley's PRO-57B claim of 8.5dBd gain on 20m with only a 24' boom is incredible That gain spec originated many years ago when it was common practice to include ground gain (up to 6 dB) in the figure.
As K9YC and others observe, this is a highly non-trivial exercise and takes weeks. I just do not have the time for the undertaking. That's actually part of why we published the detailed protocol...so
Can anyone recommend any tutorials for learning how to read a smith chart and also using the Sim Smith application ? I want to be able to design coax matching stubs and am a total newbie. The smith c
I am looking for a single rotating ring to accommodate Rohn 25 tower. W1SMS Frodo has the ring! Couldn't help it - powerless to resist - the latte made me do it... 73, Ward N0AX _____________________