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#21
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11 meter beam
On Jul 17, 6:37*pm, "Stan Cooper" wrote:
Hello I hope I'm not intruding by asking for advice on a CB antenna but I figured this would be the group to ask about such things for the straight scoop. At any rate I'm considering a store bought beam with both vertical and horizontal polarization and my choices are limited to these two below.. (not many being manufactured anymore) The Maco has a 16 foot boom and an advertised gain of 12.5 db, while the JO GUNN has an 8 foot boom and an advertised gain of 14.5 db. I know there is a lot of smoke and mirrors involved with advertised gains and so my question is...is it possible for the JO GUNN to perform as well as the Maco antenna? The GUNN is of much stronger construction and a smaller windload so I'd rather put it up, but the short boom makes me wonder if the gain and rejection numbers are suspect. Any help would be greatly appreciated, antenna choices, price tags and urls below. 73 Stan MACO-Shooting Star $279.95http://www.mpaudio1.com/Macobeamantennas2.html JO GUNN 3 + 3 STAR $382.00http://tinyurl.com/6hzteu Oh btw, I'll be tower mounting it about 40' from the ground and turning it with a hamIV rotator. Thanks again. Why buy either. There are plenty of plans for beams around. It is my opinion that building one from scratch is not much more difficult that putting one togetther from the box. In the process you will learn how boom length, element spacing, numer of elements all come together to give you a good antenna, If you can download the assembly manual you will probably have enough detail for building your own. Back in the 70s I belonged to a CB club. A group of us started building antennas for ourselves and other club members. We purchased our aluminum at an extrusion plant. By going through there reject pile were were able to get the tubing for pennies on the pound. We placed the tubing in a jig and was able to cut nearly all the pieces(even for large booms) to length with one pass of a radial arm saw. Nearly all that was left was to put the parts in a cardboard box with instructions and a hardware list. This was a great club with over a thousand members. We did not tolerate illegal or obnoxous operation. The penalty was expulsion from the club and you would be placed on the list where other members just wouldnt talk to you. On the other hand benifits of belonging to the club were considerable. Education Inexpensive antennas and equipment lots of help and fellowship and numerous family oriented events throughout the year. The group as a whole was a huge pool of talent for just about anything you could think of and we helped each in a lot more ways than just CB. A model for even the best ham clubs I have seen. Jimmie . |
#22
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11 meter beam
On Thu, 17 Jul 2008 18:11:58 -0700, "998cc"
wrote: Stan, just go with what you like. I too am suspicious of claimed gain by manufacturers. I will also throw in a plug for getting your ham license. It costs very little to get your license, and it opens many new adventures far and above 11 meters. You can work the world on 100 watts and a wire strung between a couple of trees. Try the practice tests on QRZ.com. 73. Russ W6OHM "Stan Cooper" wrote in message ... Hello I hope I'm not intruding by asking for advice on a CB antenna but I figured this would be the group to ask about such things for the straight scoop. At any rate I'm considering a store bought beam with both vertical and horizontal polarization and my choices are limited to these two below. (not many being manufactured anymore) The Maco has a 16 foot boom and an advertised gain of 12.5 db, while the JO GUNN has an 8 foot boom and an advertised gain of 14.5 db. I know there is a lot of smoke and mirrors involved with advertised gains and so my question is...is it possible for the JO GUNN to perform as well as the Maco antenna? The GUNN is of much stronger construction and a smaller windload so I'd rather put it up, but the short boom makes me wonder if the gain and rejection numbers are suspect. Any help would be greatly appreciated, antenna choices, price tags and urls below. 73 Stan MACO-Shooting Star $279.95 http://www.mpaudio1.com/Macobeamantennas2.html JO GUNN 3 + 3 STAR $382.00 http://tinyurl.com/6hzteu Oh btw, I'll be tower mounting it about 40' from the ground and turning it with a hamIV rotator. Thanks again. |
#23
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11 meter beam
On Thu, 17 Jul 2008 18:11:58 -0700, "998cc"
wrote: Stan, just go with what you like. I too am suspicious of claimed gain by manufacturers. I will also throw in a plug for getting your ham license. It costs very little to get your license, and it opens many new adventures far and above 11 meters. You can work the world on 100 watts and a wire strung between a couple of trees. Try the practice tests on QRZ.com. 73. Russ W6OHM "Stan Cooper" wrote in message ... Hello I hope I'm not intruding by asking for advice on a CB antenna but I figured this would be the group to ask about such things for the straight scoop. At any rate I'm considering a store bought beam with both vertical and horizontal polarization and my choices are limited to these two below. (not many being manufactured anymore) The Maco has a 16 foot boom and an advertised gain of 12.5 db, while the JO GUNN has an 8 foot boom and an advertised gain of 14.5 db. I know there is a lot of smoke and mirrors involved with advertised gains and so my question is...is it possible for the JO GUNN to perform as well as the Maco antenna? The GUNN is of much stronger construction and a smaller windload so I'd rather put it up, but the short boom makes me wonder if the gain and rejection numbers are suspect. Any help would be greatly appreciated, antenna choices, price tags and urls below. 73 Stan MACO-Shooting Star $279.95 http://www.mpaudio1.com/Macobeamantennas2.html JO GUNN 3 + 3 STAR $382.00 http://tinyurl.com/6hzteu Oh btw, I'll be tower mounting it about 40' from the ground and turning it with a hamIV rotator. Thanks again. Sorry 'bout the blank. I knew if i just kept reading i would find something like QRZ.com |
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