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Search: Posts Made By: ADTech
Forum: Antennas 31-May-2017, 2:47 PM
Replies: 112
Views: 150,655
Posted By ADTech
Thanks for bringing that to my attention. Must...

Thanks for bringing that to my attention. Must have been a Monday morning at the factory!

I couldn't find any relevant tickets in our system. Any chance you received a ticket number?
Forum: Antennas 26-May-2017, 11:09 PM
Replies: 112
Views: 150,655
Posted By ADTech
That's because of the physics of the lower...

That's because of the physics of the lower frequencies. You can currently get a small Winegard (HD7000R) or a small Channel Master like the CM3016 or CM5016 but they're going to range from...
Forum: Antennas 26-May-2017, 11:21 AM
Replies: 112
Views: 150,655
Posted By ADTech
I'm going to go with the engineer either mis-poke...

I'm going to go with the engineer either mis-poke or there was a miscommunication. There's nothing in the FCC file that indicates the digital facility was ever anything but what it still is.

I'd...
Forum: Antennas 25-May-2017, 6:45 PM
Replies: 112
Views: 150,655
Posted By ADTech
K42AC shares a Jampro JA/LS-8 with K38AI and...

K42AC shares a Jampro JA/LS-8 with K38AI and K40DD up on Mingus Mtn and the antenna is H-POL only, none of them are licensed for any vertical component in their signal. Their antenna is, however,...
Forum: Antennas 25-May-2017, 3:12 PM
Replies: 112
Views: 150,655
Posted By ADTech
With the data as previously presented, no. The...

With the data as previously presented, no. The comparable data from a reference antenna of known characteristics would need to have been included so that the mathematical comparisons could be done....
Forum: Antennas 25-May-2017, 2:17 PM
Replies: 112
Views: 150,655
Posted By ADTech
I've never heard of CP or EP being useful for...

I've never heard of CP or EP being useful for that purpose. I've always heard that it helped with indoor antennas or mobile-type reception devices (which didn't pan out under ATSC 1.0).

What are...
Forum: Antennas 24-May-2017, 6:12 PM
Replies: 112
Views: 150,655
Posted By ADTech
Everything (TX & RX antennas) was horizontally...

Everything (TX & RX antennas) was horizontally polarized since that is the de-facto standard for North American TV broadcasting as well as the design of all of the tested antennas. I could just as...
Forum: Antennas 24-May-2017, 4:01 PM
Replies: 112
Views: 150,655
Posted By ADTech
As promised yesterday, I've attached the...

As promised yesterday, I've attached the mentioned plot.

A couple of additional notes:

1) I added black vertical lines to denote the boundaries of the current high HF and UHF bands.

2) Low...
Forum: Antennas 23-May-2017, 9:07 PM
Replies: 112
Views: 150,655
Posted By ADTech
I finally should be able to upload a summary plot...

I finally should be able to upload a summary plot of the relative boresite reception of a number of small Yagi/LPDA antennas from my testing earlier this month.

A few notes to ponder while you're...
Forum: Antennas 1-May-2017, 11:56 PM
Replies: 112
Views: 150,655
Posted By ADTech
Might have some interesting test data after...

Might have some interesting test data after tomorrow.

I had to bail out of the office late this morning to get back home while I could and I'll be land-locked for a couple of days due to local...
Forum: Antennas 14-Apr-2017, 6:39 PM
Replies: 112
Views: 150,655
Posted By ADTech
The UHF section is a simple UHF Yagi structure...

The UHF section is a simple UHF Yagi structure with a parasitic element that is probably there to flatten the bandwidth.

The VHF section, is not a Yagi as the two rear most elements are connected...
Forum: Antennas 13-Apr-2017, 8:26 PM
Replies: 112
Views: 150,655
Posted By ADTech
I can GUARANTEE you that they were tight-lipped...

I can GUARANTEE you that they were tight-lipped because they didn't have a clue as to the correct answer. FWIW, the antenna is manufactured for VOXX (owner of the old RCA trademark) by Winegard. It...
Forum: Antennas 12-Apr-2017, 12:59 AM
Replies: 112
Views: 150,655
Posted By ADTech
The short ones. The long ones.

The short ones.

The long ones.
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