Search found 28 matches

by GregHahn
Mon Apr 24, 2017 11:28 am
Forum: STL Engineering
Topic: Harris CD Link
Replies: 12
Views: 1037

Re: Harris CD Link

My answer appears to be "yes". Both units take Harris part # 736-0292-000. :) I believe that the TX uses a second high current supply for the PA that is also a generic open frame supply. Yup. I went ahead and popped open a transmitter to be sure. The other one in the transmitter is a Power One MAP5...
by GregHahn
Mon Apr 17, 2017 2:02 pm
Forum: STL Engineering
Topic: Harris CD Link
Replies: 12
Views: 1037

Re: Harris CD Link

My answer appears to be "yes". Both units take Harris part # 736-0292-000. :)
by GregHahn
Mon Apr 17, 2017 7:36 am
Forum: STL Engineering
Topic: Harris CD Link
Replies: 12
Views: 1037

Re: Harris CD Link

Thanks, We just aren't feeling real warm and fuzzy about putting $5k into a 15yo set of equipment that can be replaced for $3600 with a Nicom or Armstrong. After a bunch of digging. It appears that the PS is a Power One MAP40-3003... Ironically the same as BE uses on the AMx series of TX for contro...
by GregHahn
Tue Apr 11, 2017 10:46 am
Forum: FM Radio
Topic: RBDS Phase
Replies: 7
Views: 568

RBDS Phase

Interested in hearing how you guys monitor RDS phase in order to set it in quadrature with the FM pilot. There isn't much out there on the internet that I can find. Not so much in the Audemat manual either.

Image
by GregHahn
Mon Jan 06, 2014 11:50 am
Forum: FM Radio
Topic: Inexpensive FM Modulation Monitor?
Replies: 32
Views: 4007

Re: Inexpensive FM Modulation Monitor?

Turns out I wasn't looking at the same Inovonics box as castr was. He was looking at this:

http://www.bswusa.com/RDS-Encoders-and- ... P9287.aspx

And that will work.
by GregHahn
Sun Jan 05, 2014 6:38 pm
Forum: FM Radio
Topic: Inexpensive FM Modulation Monitor?
Replies: 32
Views: 4007

Re: Inexpensive FM Modulation Monitor?

What Broadcast Doc is saying is exactly right. A lot of radio stations don't use the composite output at all. And in your case it doesne't make any sense to take that nice processed audio and running it into the stereo generator of the Optimod, only to turn right around and decode it right back to s...
by GregHahn
Tue Dec 31, 2013 8:45 am
Forum: FM Radio
Topic: XMTTR IS OFF THE AR
Replies: 22
Views: 2250

Re: XMTTR IS OFF THE AR

ChuckG wrote:That 1978 storm was a baaaad one. About Easter, IIRC?
Not sure. It was before my time. I never even heard of Rockford prior to 1979.
by GregHahn
Mon Dec 30, 2013 8:18 pm
Forum: FM Radio
Topic: XMTTR IS OFF THE AR
Replies: 22
Views: 2250

Re: XMTTR IS OFF THE AR

The location is Southern Wisconsin, where there is a lot of happiness this morning---------go Pack! I gave some thought about sending a "volunteer" up the tower with a hair dryer and long extension cord, but the folks are a lot smarter than they look. The deicer spray is a good idea, but you need t...
by GregHahn
Sun Dec 29, 2013 4:05 pm
Forum: FM Radio
Topic: XMTTR IS OFF THE AR
Replies: 22
Views: 2250

Re: XMTTR IS OFF THE AR

Where are you?

That's an awful lot of ice. I'd hope that was really unusual for your area. If it's not you'll have to do something.
by GregHahn
Thu Dec 12, 2013 11:11 am
Forum: FM Radio
Topic: Rf interference from fm transmiters
Replies: 4
Views: 967

Re: Rf interference from fm transmiters

Actually there is a whole lot that's not covered. Specifically exempt are mobile receivers. The entire rule is here: http://www.ecfr.gov/cgi-bin/text-idx?SID=eb0f8b62bc98a21a54bd27d2b6d5cc4b&node=47:4.0.1.1.2.2.1.31&rgn=div8 But the relevant part is here: (b) After January 1, 1985, permittees or lic...
by GregHahn
Fri Aug 17, 2012 3:51 pm
Forum: AM Radio
Topic: Time tolerance for AM pattern switching
Replies: 12
Views: 2100

Re: Time tolerance for AM pattern switching

What if there's a typo on the license that had propagated renewal to renewal for nearly 30 years. They were changing to day 30 minutes early in November than anyone else in the area. Finally got corrected with a 301 & 302 on a all new array and pattern. Lucky for the protected station it was to the...
by GregHahn
Wed Aug 15, 2012 1:31 pm
Forum: AM Radio
Topic: Time tolerance for AM pattern switching
Replies: 12
Views: 2100

Re: Time tolerance for AM pattern switching

Thank you, everyone for your replies. I also asked a very respected FCC alternative inspector, and thought it would be worthwhile to post his opinion here as well: Hi Greg, The change of pattern or going from day power to night power is a term of the station license. A random miss by five minutes is...
by GregHahn
Mon Jul 30, 2012 2:10 pm
Forum: AM Radio
Topic: Time tolerance for AM pattern switching
Replies: 12
Views: 2100

Time tolerance for AM pattern switching

If an AM station is required to change antenna pattern and/ or power according to a timetable, how much tolerance is there as to the times? I’ve always thought it was 5 minutes, but I can’t find that in the rules anyplace. For instance, if we’re supposed to change from Day pattern to Night pattern a...
by GregHahn
Tue Jul 24, 2012 8:39 pm
Forum: FM Radio
Topic: Receiving translator interference...what to do?
Replies: 6
Views: 949

Re: Receiving translator interference...what to do?

One more thing: You should file your 302 and get a license for your station before you push too hard on the other guy. You only have a few days- 10 I believe- to file the 302 once your station has gone on the air. That may be why he isn't taking you too seriously. Thanks everyone. I have sent multip...
by GregHahn
Tue Jul 24, 2012 1:22 pm
Forum: FM Radio
Topic: Receiving translator interference...what to do?
Replies: 6
Views: 949

Re: Receiving translator interference...what to do?

Full power FMs trump translators if I'm not mistaken. You should run it by your attorney and/ or the engineers that did your application. If the translator owners aren't willing to respond to your correspondence then it has to be handled at the next level.