So if I have read this right, and please correct me if I am wrong, it doesn't make any difference if the GM is mounted to a steel or fiberglass mast. I was thinking of getting a few lengths of steel rigid electrical conduit for a mast, will this work? I think it is 1 1/2" in diameter, and they screw together.
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New antenna from Sirio Gain-Master
- Thread starter dxswe
- Start date
Hi,
Oldtimer here,
One thing I discovered is the size and type of the wire makes a differance in gain, to me that is why an A99 out performs a I-Max 2000 a lot od times, used a .64 R/S ground plane antenna at 18' and could talk to the state line 50+ miles away on a Cobra 2000GTL from Las Vegas, had trucker tell me I was the only guy from LV they could hear from there, my .64 antenna had a little matching device in the base that had a small coil and a Cap in it and the antenna would take only about 200PEP max, I think the smaller the wire of the right type and a good antenna design the more you are going to here, but with higher gain comes more noise, so there always is a trade off, you guys have done a lot of work an I have not read all of it yet, but THANKS...........Oldtimer
Oldtimer this is Ole' Grandpa. Back in the 70's my first store bought CB antenna was the HyGain CLR2. It was like you describe and even though it would only do about 200< watts, it was a real improvement over the wire and mobile antennas I was use to.
My antenna did have very small foil type coil on a mica disc in the base and it was very thin, but I don't think the possible advantages it showed were due to the small wire. HyGain was Old School and they really believed in symmetry in design and construction. If there was any competition in antennas back then I don't remember, but that old bugger and its renowned little brother the Penetrator 500 proved a lot about how a well balanced antenna that was truly symmetrical could perform. I think it was the great symmetry that allowed the RS/.64 collinear to work so well.
Finally, I got the GM and the A99 at the same height to the mount
Today
Yesterday: http://www.worldwidedx.com/attachme...ain-master-gain-master-vs.-a99-2-640x480-.jpg
Now, does this look more better.
Today
Yesterday: http://www.worldwidedx.com/attachme...ain-master-gain-master-vs.-a99-2-640x480-.jpg
Now, does this look more better.
Marconi,
Something that sort of backs up what I was talking about, my wife had a little Dodge Deman I think it was. I installed a 148GTL 12w SSB and I used a Big Stick in my attic in a town home in PV, CA and use to talk with her on Sunday nights when she was coming back from LV, NV on LSB over 75 miles away, when we first started doing it, I could not believe she was where she was, but she was and I could do it on a consistant basis, at that time I had a K40 on a mini van using a SS3900 with a Messinger 350 in the late 80s but I could not do it when thing were reverested. That started me thinking some about antennas, an I'm still thinking about them today Hmmm. As I said before thanks you guys for doing all this posting on antennas, it will keep me reading and thinking for a very very long time, GOOD STUFF..................Oldtimer
Something that sort of backs up what I was talking about, my wife had a little Dodge Deman I think it was. I installed a 148GTL 12w SSB and I used a Big Stick in my attic in a town home in PV, CA and use to talk with her on Sunday nights when she was coming back from LV, NV on LSB over 75 miles away, when we first started doing it, I could not believe she was where she was, but she was and I could do it on a consistant basis, at that time I had a K40 on a mini van using a SS3900 with a Messinger 350 in the late 80s but I could not do it when thing were reverested. That started me thinking some about antennas, an I'm still thinking about them today Hmmm. As I said before thanks you guys for doing all this posting on antennas, it will keep me reading and thinking for a very very long time, GOOD STUFF..................Oldtimer
Marconi,
Forgot on very important thing, the antennas I installed on her car was a cheap Antenna Specialist 25 dollar trunk mount 40" antenna, I may have bonded the trunk lid to the car with bonding jumpers because that was a practice I did at that time, maybe!..................Oldtimer
Forgot on very important thing, the antennas I installed on her car was a cheap Antenna Specialist 25 dollar trunk mount 40" antenna, I may have bonded the trunk lid to the car with bonding jumpers because that was a practice I did at that time, maybe!..................Oldtimer
Looks more better thats how all your antennas should be tested and compared to each other same feed point height, now your testing antennas not height advantages... So gives us the results
op: the world is waiting...Looks more better thats how all your antennas should be tested and compared to each other same feed point height, now your testing antennas not height advantages... So gives us the results
Suburban, I've mentioned that my local contacts won't have anything to do with antenna testing on the air. So, I only record RX signals as a result. I would really prefer cooperation and two way reports, but these knuckle heads won't stoop to such menial tasks. I often call em' professional CB'ers when I want to piss em' off, and it works.
So, I have to wait until I catch these guys on the air. It just takes time. Most mornings the whole bunch is out there, and if conditions are nice and quiet...that is when I get to work. This morning there was only two talking, but I did hear that two of the guys were back from holiday, so maybe tomorrow.
I can go on 19 and monitor the traffic channel and I have done that, but there is a lot of multiple keying going on and such traffic does not produce good results. I did that today and the antennas were reporting about the same signals right down the line. So, even on raising the GM almost 8' since the other day, I'm still not seeing any advantage for the GM.
My plan is to remove my station where the GM is currently mounted. It is a bit more noisy out there, but it is also better in the clear. I'm going to quite comparing antennas with two up on a switch box. I'll certainly miss some of the finer nuance difference that I get to observe using a switch box, but them are the breaks.
How are you coming along with Eznec5 model of the Sigma 4 I sent you?
It is a lot like pulling hen's teethe getting a good radio check.
If we were closer, Marconi. We could give each other radio checks and tell each other what we wanted to hear.
Maybe someday I'll move back to Houston.
If we were closer, Marconi. We could give each other radio checks and tell each other what we wanted to hear.
Maybe someday I'll move back to Houston.
Hey Marconi, Do you plan to test the SGM (at it's now higher mounting position) alone in the sky?
I'd like to see you try several antennas on that same mast / height and record signal strengths, each for a week or so, then swap and do likewise. I have a feeling that might show the biggest average increase, if any.
- Just a thought, and I feel much better now that it's up @ 36'...
I'd like to see you try several antennas on that same mast / height and record signal strengths, each for a week or so, then swap and do likewise. I have a feeling that might show the biggest average increase, if any.
- Just a thought, and I feel much better now that it's up @ 36'...
Hey Marconi, Do you plan to test the SGM (at it's now higher mounting position) alone in the sky?
I'd like to see you try several antennas on that same mast / height and record signal strengths, each for a week or so, then swap and do likewise. I have a feeling that might show the biggest average increase, if any.
- Just a thought, and I feel much better now that it's up @ 36'...
Yes, here's the plan. When I finish testing the A99 on the new mount by the shack vs. the GM out back like in the picture below, I'll take the A99 down. Then do a report on the GM by itself out back. I've already done the GM by itself mounted next to the shack.
Then before I eliminate the old mount out back, I'll try to get the I-10K up by the shack vs. the GM out back, and do some comparisons.
Then I'm going to permanently remove the mount out back, and test the I-10K by itself on the new mount next to the shack. No more testing out back. Is that corn'fusin' enough.
OK, but before that when you test the other mount out back by the one with the I-10K on it will the other one be with both of them or on the other one in back with both or will it be on the one there already?
...How about going up on the roof with a 4 section mast and getting the bottom up to ~50 feet?!
OK, but before that when you test the other mount out back by the one with the I-10K on it will the other one be with both of them or on the other one in back with both or will it be on the one there already?
...How about going up on the roof with a 4 section mast and getting the bottom up to ~50 feet?!
Now your confusing me.