Search found 908 matches

by TPT
Sun Feb 09, 2020 9:49 am
Forum: FCC Discussion
Topic: EAS Monitoring Requirements
Replies: 5
Views: 218

Re: EAS Monitoring Requirements

Here we go, digging deeper in their state plan. The local primary-1 is KYTE in Independance, Oregon, 27 miles away, while the secondary local primary (LP2) is 97.5, KSHL, in Lincoln Beach, which appears to be only 10 miles away. You would monitor one of those two stations (or both). The Local Primar...
by TPT
Sun Feb 09, 2020 9:36 am
Forum: FCC Discussion
Topic: EAS Monitoring Requirements
Replies: 5
Views: 218

Re: EAS Monitoring Requirements

Supposedly the Commission was going to set up a standardized state plans. Never saw what became of that idea. Some state plans are good, some are concocted by good-old-boys in the state capital over lunch. I take care of one full power noncom (900 watts at 160' AHAAT--but it is the only radio statio...
by TPT
Wed Feb 05, 2020 4:28 pm
Forum: General Computers
Topic: Another Win10 update
Replies: 1
Views: 848

Another Win10 update

Just what I needed after Super Bowl weekend. Sales computer took 4 hours, my little Dell back in the shop got started Monday afternoon--did not get in Tuesday--still "chasing its tail" Wednesday morning. Outlook was disabled on two computers (port closed somehow). Then another computer suddenly star...
by TPT
Wed Jan 29, 2020 6:43 am
Forum: FCC Discussion
Topic: Renewal season
Replies: 3
Views: 428

Re: Renewal season

I would file in the month before the renewal filing is due. So if the renewal has to be filed by April 1st, file in March. Otherwise there is a risk that an early filing might be kicked out by the system, but the notice would be sent to the wrong place--or not at all. Leaving the station's license a...
by TPT
Sun Jan 26, 2020 9:16 am
Forum: AM Radio
Topic: Another one bites the dust
Replies: 10
Views: 780

Re: Another one bites the dust

Despite the enthusiasm of the low power community, these stations are very subject to going silent. There were six LP's in my area--only two remain on the air. Two licenses were turned in, a third high school station never filed for renewal last June. The renewal period for the fourth begins in June...
by TPT
Tue Jan 14, 2020 7:37 pm
Forum: AM Radio
Topic: Gates 5--no audio
Replies: 28
Views: 1242

Re: Gates 5--no audio

The jumper is on the PDM amp board. On the 5, the jumper is in one position, on the 1 kw, in the other position.
by TPT
Tue Jan 14, 2020 7:13 am
Forum: AM Radio
Topic: Gates 5--no audio
Replies: 28
Views: 1242

Re: Gates 5--no audio

Nothing like that, although there is audio on the carrier now. I see a narrow spike, and a sine wave (at very low level) with something riding on it. Changed jumpers on the PDM amp cards to get audio. Best guess is the round IC's U12/U15 are bad, which are going to be next to impossible to replace. ...
by TPT
Sun Jan 12, 2020 6:41 pm
Forum: AM Radio
Topic: Gates 5--no audio
Replies: 28
Views: 1242

Re: Gates 5--no audio

Update. Have audio, of sorts, but no real control of the output power. Have just two PDM amps installed, the other two boards have the piggy-back "pull-up" boards smoked. The two PDM amps drive PA amps 1 and 4, the other two PA amps aren't powered. With this configuration I get about 2,000 watts, wh...
by TPT
Thu Jan 09, 2020 9:16 am
Forum: Broadcast Engineering News
Topic: The Looming Engineering Age Crisis
Replies: 74
Views: 9884

Re: The Looming Engineering Age Crisis

I'm 71, my business partner will be 65 in the fall. We own three stations, he's management and sales, I take care of engineering (first phone from the '60's) and legal (JD 1974). It's not 1975 anymore. Between the internet and the 1996 telecom act, the business has been crippled. Both of us suspect ...
by TPT
Sat Jan 04, 2020 3:05 pm
Forum: FM Radio
Topic: How to feed mono only audio into base band input on tx?
Replies: 14
Views: 416

Re: How to feed mono only audio into base band input on tx?

Played with StereoTool. Was not impressed. However, you can download a demo copy to play with--I was using a generic Dell with an outboard USB audio box (Lexicon Alpha)--so a computer with higher horsepower & internal sound card may sound better. It does have a stereo encoder, but again, probably re...
by TPT
Fri Jan 03, 2020 6:10 pm
Forum: FM Radio
Topic: How to feed mono only audio into base band input on tx?
Replies: 14
Views: 416

Re: How to feed mono only audio into base band input on tx?

You need a processor designed for FM with pre-emphasis built in. Which generally means a stereo generator audio processor combination--but most allow the stereo to be switched off. In any processor--if you feed the same audio at the same level into the left and right, it will be mono anyway--just wi...
by TPT
Fri Jan 03, 2020 3:28 pm
Forum: FM Radio
Topic: How to feed mono only audio into base band input on tx?
Replies: 14
Views: 416

Re: How to feed mono only audio into base band input on tx?

What ERP will you be running on the translator? The BW line of transmitters (starting with a 50 watt, going on up) have built in audio processing, run from $2,600 for 50 watts, on up. As I suggested, Nautel's 300 watt is more expensive, but has a built in Orban processor option. The BW does not play...
by TPT
Thu Jan 02, 2020 6:43 pm
Forum: FM Radio
Topic: How to feed mono only audio into base band input on tx?
Replies: 14
Views: 416

Re: How to feed mono only audio into base band input on tx?

The circuit will get pre-emphasized audio, but you will need to process that audio ahead of that. Is this an FM to translator set-up? Years ago we were able to pluck a composite signal out of a Pioneer tuner to drive a translator. Worker reasonably well...but then, we were able to find a schematic f...
by TPT
Thu Jan 02, 2020 6:24 pm
Forum: AM Radio
Topic: Gates 5--no audio
Replies: 28
Views: 1242

Re: Gates 5--no audio

Helpful. My scope weighs a ton, & have to haul it up a hill to the little mound the tower sits on. Too steep for my car. Oh well. Maybe Saturday, unless its raining.
by TPT
Wed Jan 01, 2020 10:29 am
Forum: AM Radio
Topic: Gates 5--no audio
Replies: 28
Views: 1242

Re: Gates 5--no audio

Need to throw in another problem at this site. Two AM's to one stick, second AM is a kilowatt. Digital VOM's mostly useless, using a little Triplett VOM that seems immune to RF.