Search found 3220 matches

by Deep Thought
Sun Jan 21, 2018 10:11 pm
Forum: TV Engineering
Topic: Can´t receive sat freq over 11500 V or H
Replies: 7
Views: 122

Re: Can´t receive sat freq over 11500 V or H

Back in the early days of satellite-delivered programming in the USA it was not unusual to have to enclose the dish in some sort of metal mesh to avoid terrestrial interference from things like AT&T microwave relay installations. Do you have enough room (and permission) to build a "mesh wall" (basic...
by Deep Thought
Wed Jan 17, 2018 9:40 pm
Forum: TV Engineering
Topic: Audio board EQ for newscasts
Replies: 7
Views: 166

Re: Audio board EQ for newscasts

Your audiophile viewers probably wouldn't know how to properly mic a live show if their oxygen-free brain had to.
by Deep Thought
Wed Jan 17, 2018 12:05 pm
Forum: FCC Discussion
Topic: Revitalized AM Translators
Replies: 16
Views: 320

Re: Revitalized AM Translators

Delaying enforcement until a request for extension of the STA would keep the clowns from gaming the system and not penalize the listeners of the guy trying to be honest. Just sayin’. The Commission is generally lenient in genuine out-of-the-control-of-the-licensee situations IF you don't lie about ...
by Deep Thought
Wed Jan 17, 2018 12:21 am
Forum: FM Radio
Topic: Harris/Gates support
Replies: 11
Views: 522

Re: Harris/Gates support

Nautel makes the VS series, but some of the innards are OEM'd, mostly the power supplies of which they had a really bad batch of awhile back.
by Deep Thought
Tue Jan 16, 2018 1:44 pm
Forum: FCC Discussion
Topic: Revitalized AM Translators
Replies: 16
Views: 320

Re: Revitalized AM Translators

A translator obtained under one of the move-in windows cannot change the primary station until four years of continuous operation (FX and AM) have passed, and can never be changed if it was obtained via an Auction 99 or 100 new station filing. It is possible that the one you hear is not part of the ...
by Deep Thought
Mon Jan 15, 2018 1:47 pm
Forum: FCC Discussion
Topic: Revitalized AM Translators
Replies: 16
Views: 320

Re: Revitalized AM Translators

how does one determine the actual 2mV/m coverage of the AM station at whatever reduced parameters it is operating under? That isn’t normally something the licensee is expected to know, is it? It's about a ten second calculation and if you don't know it you aren't fit to be a licensee. Pick up the p...
by Deep Thought
Mon Jan 15, 2018 11:34 am
Forum: FCC Discussion
Topic: Revitalized AM Translators
Replies: 16
Views: 320

Re: Revitalized AM Translators

The overlap policy is less than 50%, but it isn't spelled out in the rules. That CP condition only applies if the AM station is operating with "reduced facilities" and is only on the newly-minted Auction 99 facilities which are forever married to the AM. Section §74.1201 states: (g) Translator cover...
by Deep Thought
Fri Jan 12, 2018 11:25 am
Forum: Radio Studio Engineering
Topic: Software to control Broadcast Tools 8x2 Audio Switcher
Replies: 5
Views: 188

Re: Software to control Broadcast Tools 8x2 Audio Switcher

KPJL FM wrote:
Fri Jan 12, 2018 8:23 am
BT used to have software on their website. Something called NetSwitch, IIRC.
It's still there:

http://broadcasttools.com/downloads/
by Deep Thought
Thu Jan 11, 2018 5:41 pm
Forum: Radio Studio Engineering
Topic: Software to control Broadcast Tools 8x2 Audio Switcher
Replies: 5
Views: 188

Re: Software to control Broadcast Tools 8x2 Audio Switcher

It has both contact closure and serial port control and communicates via ASCII commands. Pretty basic stuff...you could probably write something to send command strings on a clock fairly easily, even in BASIC. I've got one of their SS 8.2 units in the basement that came with a bunch of other stuff f...
by Deep Thought
Tue Jan 09, 2018 8:36 am
Forum: FM Radio
Topic: 2 stations fighting to get on the frequency
Replies: 5
Views: 168

Re: 2 stations fighting to get on the frequency

9 KW at what height? On the FM band antenna height is a huge contributor to how well the station signal propagates. Also, what is the topographic configuration of the "Mountainous or Areas with Big Valleys"? If the class-A is terrain blocked even a relatively weak signal from a distant station with ...
by Deep Thought
Mon Jan 08, 2018 6:49 pm
Forum: FM Radio
Topic: 2 stations fighting to get on the frequency
Replies: 5
Views: 168

Re: 2 stations fighting to get on the frequency

Any ideas about what, exactly? In the USA commercial stations are generally not protected beyond what the spacing table provides, and the "protected service contours" are significantly higher than what even a mediocre radio needs for reception. It is common to "hear" stations far beyond those contou...
by Deep Thought
Sat Jan 06, 2018 12:40 pm
Forum: FM Radio
Topic: RF Spectrum Analyzer
Replies: 25
Views: 916

Re: RF Spectrum Analyzer

Based on that review I decided to get one to replace my trusty but 24 year old IFR A-7550, which has served me well but really is out of date, technology-wise. This unit cost less than half of what the IFR did back then, too. It'll be nice to have an up to date spec an which can run on DC and doesn'...
by Deep Thought
Sat Jan 06, 2018 11:06 am
Forum: FM Radio
Topic: Singling out 2 stations on same frequency
Replies: 24
Views: 905

Re: Singling out 2 stations on same frequency

According to the OP, this is a hobby project and "there is a cool factor to listening to a station really far away with A basic FM radio." I am fairly confident that five nines reliability isn't the goal. Your CATV system switching OTA sources would never fly in today's world of retransmission conse...
by Deep Thought
Fri Jan 05, 2018 11:15 pm
Forum: FM Radio
Topic: Singling out 2 stations on same frequency
Replies: 24
Views: 905

Re: Singling out 2 stations on same frequency

The OP is not talking about translators. That was brought up later that his effort may be for naught should one go on.
by Deep Thought
Wed Jan 03, 2018 4:27 pm
Forum: FM Radio
Topic: RF Spectrum Analyzer
Replies: 25
Views: 916

Re: RF Spectrum Analyzer

Too good to pass up. :) Same seller has "pre-owned" units with tracking gen for $1000 less. If you only need the analyzer and the power adapter here you go: https://www.ebay.com/itm/Anritsu-MS2721B-Spectrum-Analyzer-9kHz-to-7-1GHz-with-Opt-20-Tracking-Generator/292193914892 I remember when these thi...