And while you're at it, why shouldn't SO Assisted be separated from Multi-single? That is a relic of the earliest days of packet, and hasn't made sense for at least 20 years. 73, Pete N4ZR Check out
Or, since you don't really need a calibrated result, build a simple variable attenuator. Just about anything works so long as you can vary the sensitivity as you approach the power line. 73, Pete N4Z
I would seriously consider going wireless. A few years ago I had a direct strike on the top of my tower. Fortunately, everything was disconnected, so I sustained no damage in the shack. In fact, the
One of the reasons I have mot gone to high power on 160 is the cost of capacitors for my omega match - at least $300. Anyone know of any workable alternative? I remember someone writing about using c
Thanks, Tom. I thought I recalled this advice from an earlier reflector post, but couldn't find it. Thanks also to everyone elsewho replied, and the many interesting ideas My single 97-foot tower has
Hi Milt - do you get NCJ? A few issues ago (May June 2012) I had an article in there about this. I'm sending you a copy. I am using these for an 8-way receiving antenna hub. There are some minor oper
For whatever it is worth, afew years ago I put up an endfire array of two K9AYs spaced 135 feet, phased 180 degrees. It worked probably the best of any receiving antenna I have had here on 160M. Mode
And this part: ? Antenna Efficiency Frequency (MHz) Efficiency (dB) 2 -12.7 3 -8.8 5 -6.4 7.5 -4.8 10 -4.2 20 -2.8 30 -2.1 I'm not sure what a negative antenna efficiency means. Compared to an isotro
The other rule that seems to apply, based on a number of pretty serious articles, including K3LC's NCJ series in the mid-2000s,is "they that has, gets." By which I mean, if you have good ground condu
Please have mercy on a history major... I'm trying to wind a binoocular core matching transformer for 75-ohm coax to a BOG with (for a start) 270 ohms of terminating resistance. I figure that is a 4:
Thanks to everyone who helped me straighten this out. Changing from 2:4 to 4:8 turns made all the difference, probably, as a couple of people suggested, because only two turns ion the primary is inad
I'm having a repeated weird problem with compression F connectors on quad-shield RG6. When I connect a short length (say 4 feet) of cable to my MFJ-259B, I would expect R>650. Instead, when I wiggle
Very interesting, Jim - I have been using Ideal connectors from Home Depot, and they have no color band at all (nor do they have decent instructions for installing). I will try to find some of the bl
Back on the subject of RG-6, Ideal specifies folding back the top layer of braid, cutting off the first foil layer, then folding back the second layer of braid. The trouble is that on my cable, the s
Shouldn't you also look at lightning activity on the path between you and your area of interest? I've found quite often that the day after a big eastward-moving storm, there is a lot of noise on my p
Well, sorta, Tim. My Skimmer routinely reports signal-to-noise ratios of 3-4 dB at band opening. The real problem is that the majority of RBN nodes use non-directive antennas of one sort or another,
I have a 97-foot Rohn 25 tower with 2 X C-3Es and an EF-240S on top. I tried initially to find a 50-ohm point on the tower, without success, so I then went to an Omega match, using a pair of 300 pF t
And for more info, send him $3. 73, Pete N4ZR Check out the Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com. For spots, please go to your favorite ARC V6 or VE7
What I find more interesting was this line in the press release - "Tim Duffy K3LR, Chief Marketing Officer and General Manager of DX Engineering." Say what? 73, Pete N4ZR Check out the Reverse Beacon
I have finally decided to go through my RX antenna systems and replace all the F connectors with BNCs. My coax is all RG-6 Quad shield. I would like to find an all-crimp BNC male solution, or failing