-- As far as I know, there are no bad serial number ranges for the 850. I haven't heard about the DDS chips. Here's a good page for 850 problems/solutions: http://n6tr.jzap.com/850repair.html I have
I'm trying to figure out how CW Skimmer will ultimately physically tie in to an so2r contest setup. Let me propose a straw man, and then you smart guys can whip it into shape. 1. We use the IF output
-- That is EXACTLY the sentiment I expressed about so2r 15 years ago. There's been a lot of water under the bridge since then. At least skimmer won't cost $4000 like so2r did. Dave Hachadorian, K6LL
Results of the 2007 ARRL SS CW are now available online: http://www.arrl.org/contests/results/2007/sscw.pdf Nice job on the writeup by Kelly, VE4XT. Dave Hachadorian, K6LL Yuma, AZ __________________
I think the first number is the number of sunspot groups, and the second number is the total number of sunspots in all the groups. The minimum number, other than zero, is 11 (one group with one sunsp
You might do better posting this on the towertalk reflector. Can you, and did you, calibrate the meter by pushing the CAL button? What is the voltage across terminals 3 and 7? It should be 13 VDC. Th
You're right. The question comes up every few years, and nobody has ever produced a schematic. If you slide the unit out of the case, you can easily see how it is put together. Basically, there are 6
There's not really a simple answer to this question. The best method of analysis would be to use the program HFTA, which comes with the ARRL Antenna book. Here's a link to the manual: http://www.arrl
-- This year I started SS on 14.272. That lasted for about 10 minutes, and then a station came on and complained that my POS radio was splattering a net on 14.275. I told him 3 KHz was more than enou
I also like the AL-1500, although the blower is a little loud when set on HIGH. The amp requires about 50W of drive for full output, so you have plenty of headroom with a 100W output rig, especially
For contesters, a search of the reflector Archives is usually helpful. Here was ns9i's email address listed on his 3830 reflector ARRL 160 Meter score in December 2008: ns9i2016@bayland.net Dave Hach
An interesting opinion piece by David Brooks, quite relevant to contesting. Contest clubs provide the mentors, and contests provide the practice: http://www.nytimes.com/2009/05/01/opinion/01brooks.ht
I had trouble using optocouplers. They wouldn't key the rig. I went back to a 2N2222 with 1K in the base lead. I tried all the free programs for LPT keying and couldn't get any of them to work. I did
Hi Mark, Interesting. Let me see if I can summarize your findings regarding use of optocouplers on LPT ports: 1. Single stage optocouplers draw too much current from the LPT port. 2. Darlington optoc
In SSCW this past weekend, ther were at least two stations on the air who gave their callsigns as portable about half the time. This creates a major loophole for duping them, if you log them one way
I have done this once or twice to take a bathroom break. I never really gave the propriety of the process much thought. I can't really think of a specific rule that it violates. Dave Hachadorian, K6L
Just a reminder that the RTTY Sprint is coming up this evening. It's fun in its own crazy way. It's even more fun if you are on a team, competing with other teams. If you would like to join one of th
I was going to play in the rookie roundup and just tried to log in to getscores after registering. Getscores says "live logging will be available later on Saturday, April 17th, for testing before the
Below is an interesting exchange between me and K4XU on the 7QP rules. From what I see in N1MM v10.4.7 though, N1MM scores subsequent QSO's as a zero point dupe, even if the county is entered. -- Dav