Just a heads up on what was going on, on this side of the pond: Conditions from East Coast US to West Coast US were very unoptimal. Those west coast multipliers are very valuable and there's a bunch
Just a heads up on what was going on, on this side of the pond: Conditions from East Coast US (Maryland) to West Coast US were very unoptimal. Those west coast multipliers are very valuable and ther
Many receivers (I try to indict DSP rigs below but really pure analog mulitconversion receivers can show this too) can have AGC pumping causing perceived clicks, especially when the incoming signal
I'm far from a propagation expert but my observation: 160 inside NA was working real good in the NAQCC QRP 160M sprint and last night too. (Side note on the NAQCC 160: I had never thought of 160 as
I was hoping to get VP7 in the log on 160 but whenever I heard him, he was calling EU only. At least I got him on 80. And I think he's packed up his 160 antenna by now. That said... yesterday I start
I want to try a new receiving antenna for the summer Stew Perry. Last winter was my first foray onto 160M and I really felt like an alligator. I could work everyone I could hear, with just 100W. I th
OK, several folks came back and recommended detuning my transmit antenna in receive. Certainly any receive antenna I have is going to be in the shadow of my transmit antenna, a 130-foot flat-top abou
SSD's draw substantially less power than a mechanical/rotating hard drive. All mechanical drives draw off the +12V rail; SSD's generally only use power from the 5V (or 3.3V for newer mSATA) rail. In
Most of the ham stuff references Amidon and Fair-Rite ferrite mix numbers A different company, Laird, sells three main mixes of ferrite toroids/beads/snap-ons: "LF", "28" and "HF". Graphs in http://w
There are parts of the third world where ham homebrewing is based around three standard toroids: "the one from a TV 75/300 balun", "the yellow one from a PC power supply", and "the green one from a P
I think my point was, we haven't always been so sophisticated either. Wes Hayward's article on toroids in Jan 1968 QST discusses the Indiana General sales policy to hams, then says "The remainder of
Figure 5 of W1HIS's writeup. 15 pounds of ferrite beads. http://www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf _______________________________________________ UR RST IS ... ... ..9 QS
I have a flat-top T transmit antenna as well. I modeled it with EZNEC, found its feed resistance/reactance, fed these into a L-match program, came up with L and C, then wound the L using the handbook
In fact I had my ARRL Antenna book (a mid-90's edition) in front of me at the dinner table last night and I think I saw the exact same table. My feeling based on some less than quantitative tests is
Thanks for the link! Key phrase for me, which does agree with the table in the ARRL books: "Obviously you're much better off to using thirty two 1/8-wave radials as apposed to a smaller number of lon
The RF Connection (therfc.com) sells stuff they call "polystealth" that is stranded copper clad steel with a pretty decent plastic insulation. I think Wireman sells similar stuff but with a differen
If we are the primary allocation, we have a responsibility to use that frequency as it was allocated. "Use it or lose it" works on every level here. Using the frequency is not jamming it. Nothing wro
Right outside of Washington DC... about S8 to S9 tonight. 1810.3. Only goes down a little during the day. I always mentally thought of it as "the buzzsaw". Tim N3QE __________________________________
Last winter I had struggled some with a pennant. Over the past weekend I strung up "half of" a K9AY in the treeline on the edge of my property (trees as supports). It's half in the sense that it's a
OK I'm confused. All the AM radio stations registered with FCC publish curves showing 2.5, 0.5, and 0.15 mV/m contours. I'm assuming these are field strengths on the ground e.g. low angles. http://ra