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Old 27-Apr-2019, 5:56 PM   #1
bobsgarage
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Antenna Spotting in Kenosha #3

Here's another one, apparently the guy is trying to get signals from North and South. I wonder if he still uses it seeing how he has the 8 Bays underneath them?

Can anybody ID that antenna? Or is it Home made?



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File Type: jpg 20190423_192447.jpg (167.9 KB, 437 views)
File Type: jpg 20190423_192512.jpg (197.1 KB, 437 views)

Last edited by bobsgarage; 27-Apr-2019 at 9:39 PM.
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Old 27-Apr-2019, 8:18 PM   #2
Nascarken
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It looks like the old 4* bay antannacaraft. Uhf tv antennas
Troposcatter Ground gain!!!
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Old 27-Apr-2019, 11:52 PM   #3
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It looks to me like two CM 3016 lashed onto a common book.
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Old 28-Apr-2019, 1:20 AM   #4
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No way I think it's a Winegrud 4bay ok channel master one of the best ANTENNA manufactures that used a ham Radio guy to design ota box with IT'S ATSC performances
New OLD school technology white space ? Low band vhf BROADCASTING channel's 2-6
Is on the come back fcc dumping a lot of money on equipment for the low band vhf BROADCASTING station and is the new antennas and cooled transmitter 's I think the
Low power vhf stations on the RECEIVE end result will be a strong signals.QSL?

Last edited by Nascarken; 28-Apr-2019 at 1:24 AM.
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Old 28-Apr-2019, 1:32 AM   #5
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Quote:
Originally Posted by bobsgarage View Post
Here's another one, apparently the guy is trying to get signals from North and South. I wonder if he still uses it seeing how he has the 8 Bays underneath them?

Can anybody ID that antenna? Or is it Home made?



What a waste of a nice TOWER.
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Old 28-Apr-2019, 12:53 PM   #6
JoeAZ
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That top antenna would almost certainly be two antenna's
modified into one. I imagine it is NOT very efficient or
effective receiving signals 180 degrees apart. i have come
up with a much better alternative to receive UHF signals
180 degrees apart. It is much more efficient than removing
the reflector.
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Old 28-Apr-2019, 2:08 PM   #7
rabbit73
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Quote:
Originally Posted by JoeAZ View Post
That top antenna would almost certainly be two antenna's modified into one.
It does look like a custom mod.
Quote:
I imagine it is NOT very efficient or effective receiving signals 180 degrees apart.
It looks like it would perform about as well as Bob's present system.
Quote:
I have come up with a much better alternative to receive UHF signals
180 degrees apart. It is much more efficient than removing the reflector.
What is your better alternative that is much more efficient than removing the reflector?

I wish Bob would ask some of the people that are using two antennas aimed in different directions, as shown in his travel photos, how they are combining them.
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Old 28-Apr-2019, 2:10 PM   #8
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I think his antennas are to close together!!!
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Old 29-Apr-2019, 12:12 PM   #9
bobsgarage
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Red face A. D. D. Antenna distraction disorder.

Quote:
Originally Posted by JoeAZ View Post
That top antenna would almost certainly be two antenna's
modified into one. I imagine it is NOT very efficient or
effective receiving signals 180 degrees apart. i have come
up with a much better alternative to receive UHF signals
180 degrees apart. It is much more efficient than removing
the reflector.
Hi Joe, I have to agree with you it looks like they cut two RadioShack VU160 antennas in half, joined them and called it an antenna.,Lol!

I'm not sure what they were doing, the construction looks old, it was probably done in the 60s or 70s. I just happened to catch it out of the corner of my eye do to my severe ADD. (Antenna Distraction Disorder)!

I've never seen so many different antennas in my life then in Kenosha which I have dubbed "antenna town". Also, lots of towers.

Okay, I give up what do you do to receive bi-directional without removing reflectors?


Last edited by bobsgarage; 3-May-2019 at 12:09 PM.
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Old 29-Apr-2019, 12:34 PM   #10
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Quote:
Originally Posted by rabbit73 View Post
It does look like a custom mod.
It looks like it would perform about as well as Bob's present system.
Ouch! Which system? My latest failure is the combining of two C4 Max's. Actually, you're right, I'm still looking for the ultimate solution. To be honest with you though I'm having fun and learning a ton. I'll probably write a thread, "What not to do" ,LOL !

Quote:
Originally Posted by rabbit73 View Post
What is your better alternative that is much more efficient than removing the reflector?
I would like to know also.


Quote:
Originally Posted by rabbit73 View Post
I wish Bob would ask some of the people that are using two antennas aimed in different directions, as shown in his travel photos, how they are combining them.
I'm pretty good at making friends, I've been in business for almost 30 years but knocking on somebody's door out of the clear blue and asking them about their antenna might shock them. Still, the temptation is there. But I'll bet the guy is probably more than willing to talk about his system, he's probably an enthusiast. Who knows, he might even be on this site!


Last edited by bobsgarage; 3-May-2019 at 12:10 PM.
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Old 30-Apr-2019, 12:34 AM   #11
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Quote:
Originally Posted by bobsgarage View Post
Ouch! Which system? My latest failure is the combining of two C4 Max's. Actually, you're right, I'm still looking for the ultimate solution. To be honest with you though I'm having fun and learning a ton. I'll probably write a thread, "What not to do" ,LOL !
Now it's my turn to say Oops! I meant no insult, Bob.

What I meant was that having two combo antennas aimed in opposite directions is a lot like having two UHF/VHF pairs aimed in opposite directions (not the C4MAXs). In both cases, you have the same combining problem.

I don't consider your experiments with two C4MAX antennas a failure; you learned a lot from it. I have been following your posts on HDF and have found them interesting (especially the SDR scans), but haven't been able to make any useful suggestions. You already have my thoughts about combining.
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Last edited by rabbit73; 30-Apr-2019 at 1:40 PM.
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Old 30-Apr-2019, 1:06 PM   #12
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Smile

Quote:
Originally Posted by rabbit73 View Post
Now it's my turn to say Oops! I meant no insult.

What I meant was that having two combo antennas aimed in opposite directions is a lot like having a UHF/VHF pair aimed in opposite directions. In both cases you have the same combining problem.

I don't consider your experiments with two C4MAX antennas a failure; you learned a lot from it. I have been following your posts on HDF and have found them interesting, but haven't been able to make any useful suggestions. You already have my thoughts about combining.
Rabbit, hahaha, I'm just messing with you! I know you well enough to know, you're a good man with a good heart, and anyone who put up with my A.D.D. (antenna distraction disorder) and keeps answering questions is a saint in my book!

I do know your thoughts about combining, I'm just trying to get the one input solution figured out. There's been a lot of good help.

But what I'm waiting for is JoeAZ's solution to combining two antennas without taking the reflectors off. Come on JoeAZ let's hear it, stop teasing

Okay Rabbit, have you ever seen two antennas put together like that? I would say by his edition of the 3 eight bay antenna, he probably wasn't happy. One day when I get a chance I might knock on his door!



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Old 30-Apr-2019, 2:25 PM   #13
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Originally Posted by bobsgarage View Post
Okay Rabbit, have you ever seen two antennas put together like that?
The closest to that I've seen is a double-ended VHF-High Yagi. It has the driven element in the center and directors on each end, but no reflectors.

I can't find the poster's image right now, but holl_ands did model a similar antenna:





The two directions are combined in the antenna.

https://imageevent.com/holl_ands/bidirectionalyagis

https://imageevent.com/holl_ands/bid...ionalfdyagiopt

This antenna IS bi-directional; it has more gain than a bi-directional dipole, but less gain than the Stellar Labs 30-2475. It still has the potential problem of co-channel interference from the two directions.
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File Type: jpg Bi-Directional Yagi.jpg (53.0 KB, 306 views)
File Type: jpg Bi-Directional Yagi Pattern.JPG (94.6 KB, 285 views)
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Last edited by rabbit73; 30-Apr-2019 at 3:15 PM.
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Old 30-Apr-2019, 4:49 PM   #14
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Sorry for the delayed response.
Please see my post, "Reception 180 degrees apart."
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Old 30-Apr-2019, 7:58 PM   #15
Nascarken
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Quote:
Originally Posted by rabbit73 View Post
The closest to that I've seen is a double-ended VHF-High Yagi. It has the driven element in the center and directors on each end, but no reflectors.

I can't find the poster's image right now, but holl_ands did model a similar antenna:





The two directions are combined in the antenna.

https://imageevent.com/holl_ands/bidirectionalyagis

https://imageevent.com/holl_ands/bid...ionalfdyagiopt

This antenna IS bi-directional; it has more gain than a bi-directional dipole, but less gain than the Stellar Labs 30-2475. It still has the potential problem of co-channel interference from the two directions.
Yes it does but if you set them up right if you tock too the antenna manufactures and let them know what 2antennas you are looking to use pleas
remember that they are both hi gain ANTENNAs and the space between the two
Is very important if it was 4ft apart and find tune them by using the TV sets
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