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Signal Engineering
- Thread starter chris.s
- Start date
Yeah, they are just down the street from me - about 4 miles to my north. Drive by them every week . . .
Signal Engineering - The Evolution of High Performance CB Antennas!
Signal Engineering - The Evolution of High Performance CB Antennas!
Hey guys, I've called them off and on since the first of the year and they do not respond. I have heard the same story from others too. I understand that Tony let Larry, his engineer, go some time ago.
If what you want to know might be in the manual, let me know and I will check it out, I have a manual. It has no notes however, so I won't know anything except what the manual says.
Marconi, How many pages is the Manual?
would it be too much trouble to copy and post?
I would be interested in looking at it......
73
Jeff
would it be too much trouble to copy and post?
I would be interested in looking at it......
73
Jeff
Here you go Jeff, pictures are not too good as usual for Signal Engineering manuals.
http://www.worldwidedx.com/members/marconi-albums-signal-engineering-thunder-8-manual.html
Does Signal Engineering offer a grounding switchbox with this antenna?
It appears it's a couple pairs of center-fed ½ wave dipoles with ¼ wave lengths of 75Ω coax to transform each set to about a pair of 100Ω in parallel at the 1:1 balun for a 50Ω final impedance.
What I don't get is how they claim 35dB side rejection unless each set is a ½ wave apart. Being less, such as maybe a ¼ wave apart, should only drop the side performance about 6-10dB, unless there's a switchbox present which grounds the unused set making them side reflectors...?
Anyone shed some
?
It appears it's a couple pairs of center-fed ½ wave dipoles with ¼ wave lengths of 75Ω coax to transform each set to about a pair of 100Ω in parallel at the 1:1 balun for a 50Ω final impedance.
What I don't get is how they claim 35dB side rejection unless each set is a ½ wave apart. Being less, such as maybe a ¼ wave apart, should only drop the side performance about 6-10dB, unless there's a switchbox present which grounds the unused set making them side reflectors...?
Anyone shed some
Hey Robb, why don't you stop by SE's shop when you get a chance and see if they are still open?
Hey Robb, I'm trying to help a friend rebuild his Lightning 6, if you could ask them what the correct distance the copper match is supposed to be away from the boom, (I'm guessing 2") and typically how far is it down the copper to tune 27.2 on one of their older Quads from about 1995, I'd sure appreciate it!
007, I'm afraid that if Robb finds they or Tony are still there...that he's as tight lipped about his product specs as Nancy Pelosi is about the Health Care debacle that she, obama, and reid pushed thru with the help of the "As* H*les" in congress. It's a management style thing.
What happened to the insulating hardware that sets the distance to the boom for the L6 tuner on your buddies L6? There should be several of these on the antenna for both polarities.
I think all the parts for the tuning stubs need to be right on the money in order to tune right and the manual says to tilt the two insulators at both ends of these brass stubs...so the wire is exactly 2" from the boom. It also gives exact dimensions for the insulators along the boom, and the coax pigtail is specified to be made 2.5" long for each tail. I think all these dimensions are likely critical to tune.
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