Non-UV-rated clear 0.118" Polycarbonate is visibly yellowed and mildly brittle after 5 years in my outdoors environment in the sunshine and other weather. I think this is the plasticizers "drying out
Some of the old-school ham radio suppliers sell/stock Daburn porcelain insulators, or you can get them direct from Daburn. e.g. Daburn 10-52: http://www.daburn.com/10-58ceramicfeed-thruinsulators.asp
In the Croatian CW contest Saturday night, LY7M, 9A2AJ, 9A5W, 9A5CW, S57DX had amazingly loud signals on the East Coast of US circa 0400UTC. 9A5CW in particular. Tim N3QE After about two years of no
I found conditions on 160M were spectacular last night at end of CWops event, several loud DL's and F's and HA's and for the first time this season for me, Ukraine. Highlight for me was working V5/DL
I went exploring with a direction finding antenna and my rig on batteries along the street, and the 120Hz impulse noise near the power lines on the street is far far worse than it is up the driveway
Streaming audio live during the contest doesn't seem particularly useful to me. But recordings made available post-contest over the web, those might be interesting to others. I'm going to see if I ca
I always set these software-based goals before the test, but funny how they get delayed in the face of driving kids around to acitivities and stringing up antennas in the trees, and then when the sun
I think we could encourage use of ARRL band plan, by not complaining when digital modes show up in 1800-1810. Tim N3QE I have an idea, it may be far fetched, but I think a good one none the less. As
I think my situation is very similar to yours. My antenna (a "130 foot doublet up 80 feet" when fed on 80 and up, but when I tie the feedline together at the base it becomes a "Marconi T for 160M tra
Traditionally a "T/R switch" means a switch to be used the other way, to allow you to move a single antenna between your separate transmitter and receiver. Ironic that here we are in the 21st century
I've done that several times, usually right after I "clean up the cabling". I've had several QSO's with me using the RX antenna for transmit :-). In fact modeling puts the K9AY loop at 25 or so dB d
PZ1AA sent me zone "DX" and was very definitely south of my QTH based on antenna selection. CQ contest FAQ says "log the zone based on their location" if the guy sends wrong or no zone. Tim N3QE Work
My observations of Astron ground wiring are similar to yours but I come to a different conclusion. The V- goes to the terminal strip lug and the terminal strip lug is attached to painted chassis by s
The author points out (correctly) the tempco issues with oil dielectric. Still I am intrigued by the thought of a remote tuning capacitor via hydraulic tubing :-). The capacitor plates could be as si
That uses the thermal properties outside a resistor, not dielectric constant properties in a capacitor :-). Tim N3QE -- Original Message -- From: ZR [mailto:zr@jeremy.mv.com] Sent: Thursday, January
I too started with DXsummit as a web interface to spotting info and especially recent history. Today when I want to research spots I most commonly use reversebeacon.net (skimmer spots) and dxwatch.ne
If I am operating ARRL DX contest at home I just work the handful of no-mult-no-point domestic guys to get them out of the way. Out of 2000+ QSO's, only two such cases this year, better than some pre
I felt conditions to EU were great in Stew and Prestew. There was one really excellent hour to run EU boom-boom-boom in CQ WW in November from LPL. That was a real joy! I felt also 80/40 were lacklus
It took me literally decades to realize this, but the low ladder line losses that show up in the ARRL graphs are not because ladder line is magical. I had been reading many articles in QST, and on th
I briefly used the "window line" you all are discussing, before I built my own parallel line from scratch. I think all the window line that's available today from Wireman, RF Connection, etc is made