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Old 10-Feb-2021, 5:39 PM   #21
videobruce
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Join Date: Feb 2013
Location: Western NY State
Posts: 22
rabbit73;
To answer your questions;
Siglent SSA 3032X
'True' north (it's easier, the house is N-S, E-W within 1 degree which makes the job very easy ).

The reference to 355 degrees is due to the offset from 330 degrees necessary being the only way I can receive the Toronto stations (RF 17-20) due to the 'swamping' effect from RF 16 even with the additional 20db attenuation from my traps. Doing so drops the offending station level over 10db making the difference.

Quote:
At the present time, are you able to receive 17 that is adjacent a much stronger 16? That would seem impossible for a TV tuner to handle.
Yes it will be, especially with a crappy tuner; aka TiVo.
Quote:
Is there a filter design that would work better?
I was originally going to go with Tin Lee, but due to poor communication (on their part) and cost, I went with PAR Electronics which I've done business before. I use to do business with C & E in East Syracuse NY (which were partners with Tin Lee), but they went out of business unfortunately.

See the attachment. Tuned for 15/16 and 31/32
.
Attached Images
File Type: png 11 My traps final w table.png (38.4 KB, 22 views)
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Last edited by videobruce; 10-Feb-2021 at 7:12 PM.
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Old 10-Feb-2021, 5:56 PM   #22
videobruce
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Tower Guy;
Yes, it can get VERY expensive depending on how many cavities you want. Horizontal 'stacking' antennas is out of the question. Too much wind resistance and additional weight on the rotor. And a $400 Amateur rotor with a brake is out also.
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Keep OTA television alive. Streaming is 'all wet'..........

Last edited by videobruce; 10-Feb-2021 at 8:49 PM.
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Old 10-Feb-2021, 9:36 PM   #23
rabbit73
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Location: S.E. VA
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Thank you for your reply
Quote:
Originally Posted by videobruce View Post
rabbit73;
To answer your questions;
Siglent SSA 3032X
9 kHz to 3.2 GHz, very nice
Quote:
The reference to 355 degrees is due to the offset from 330 degrees necessary being the only way I can receive the Toronto stations (RF 17-20) due to the 'swamping' effect from RF 16 even with the additional 20db attenuation from my traps. Doing so drops the offending station level over 10db making the difference.
So, with traps and the adjustment of aim, 17 is possible; excellent!

It looks like the slope on the high side of 16 was adjusted to be as steep as possible to protect 17.

Attached Images
File Type: jpg videobruceTVFsiglentTraps_2.jpg (102.1 KB, 55 views)
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Last edited by rabbit73; 11-Feb-2021 at 12:23 AM. Reason: corrected image to WBNF
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Old 10-Feb-2021, 10:03 PM   #24
videobruce
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Possible, depending on conditions.
Yes, to protect RF 17 as much as possible which is not easy to achieve.

Correction on CHCH. That isn't available here thanks to the FCC and the CRTC. That should be WBNF, which is 40 or so miles closer.
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Keep OTA television alive. Streaming is 'all wet'..........

Last edited by videobruce; 12-Feb-2021 at 3:10 PM. Reason: typo
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Old 11-Feb-2021, 12:27 AM   #25
rabbit73
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Quote:
Originally Posted by videobruce View Post
Possible, depending on conditions.
Yes, to protect RF 17 as much as possible which is not easy to achieve.

Correction on CHCH. That isn't available here thanks to the FCC and the CRTC. That should be WBNF 40 or so miles closer.
Sorry about that. I missed the co-channel problem. Corrected image in post above.

On this forum, I make images that will show in a post no wider than 750 pixels.
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Last edited by rabbit73; 11-Feb-2021 at 2:50 AM.
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Old 4-Mar-2021, 4:38 PM   #26
welkin
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Is this ATSC 3.0 compatable?
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