Search found 903 matches

by Dale H. Cook
Fri Feb 14, 2020 12:05 pm
Forum: AM Radio
Topic: ND-25 Problem
Replies: 5
Views: 175

Re: ND-25 Problem

sallen wrote:
Fri Feb 14, 2020 10:30 am
A good person to talk to at Nautel is Steve Braley
I'll second that. Steve is the go-to guy in tech support for the ND and XL series transmitters, and perhaps the only person left in Nautel support who has substantial hands-on experience with those series.
by Dale H. Cook
Mon Feb 10, 2020 6:53 pm
Forum: Radio Studio Engineering
Topic: Schematic for HollyAnne EAS Program Switch
Replies: 5
Views: 228

Re: Schematic for HollyAnne EAS Program Switch

kkiddkkidd wrote:
Mon Feb 10, 2020 1:30 pm
IIRC, the relay output to them was 9 or 12v.
It was 9V, to match the supply in the HU-961.
by Dale H. Cook
Mon Feb 10, 2020 7:09 am
Forum: Radio Studio Engineering
Topic: Schematic for HollyAnne EAS Program Switch
Replies: 5
Views: 228

Re: Schematic for HollyAnne EAS Program Switch

I had a couple of those POS Hollyanne systems back in the day, and still have all the documentation that I ever saw in PDF, but AFAIK they never released schematics and I don't have any.
by Dale H. Cook
Tue Jan 28, 2020 2:39 pm
Forum: AM Radio
Topic: Another one bites the dust
Replies: 10
Views: 780

Re: Another one bites the dust

The only ways for an LPFM to generate revenue are through donations, fundraisers and underwriting because they are non-commercial. Any LPFM that airs actual commercials should be reported to the Commission for violating the terms of its license.
by Dale H. Cook
Mon Jan 27, 2020 8:38 am
Forum: AM Radio
Topic: Another one bites the dust
Replies: 10
Views: 780

Re: Another one bites the dust

There is an LPFM in SW VA that is on the air, sort of - they are not transmitting from their licensed location, and they bought a cheapo Chinese transmitter which is not legal for use in the US (it has no FCC sticker). It is on with dead air 24/7. Early last year they had me come in. I determined th...
by Dale H. Cook
Thu Jan 09, 2020 9:02 am
Forum: Broadcast Engineering News
Topic: The Looming Engineering Age Crisis
Replies: 74
Views: 9884

Re: The Looming Engineering Age Crisis

NO I do not want "part time" emergency work For decades I have been on call 24/7 only for station clusters for whom I was a full time salaried engineer, and that ended six years ago. I have a couple of customers who pay me a rather minimal retainer. What that buys them is a guarantee I will work fo...
by Dale H. Cook
Sun Jan 05, 2020 7:57 am
Forum: AM Radio
Topic: Gates 5--no audio
Replies: 28
Views: 1242

Re: SX vs. MW

Shane wrote:
Sat Jan 04, 2020 12:40 pm
What type of modulation system did the MW1 use?
Progressive series modulation (PSM).
by Dale H. Cook
Wed Jan 01, 2020 8:51 am
Forum: FM Radio
Topic: Nicom BKG77 Issue I think
Replies: 11
Views: 579

Re: Nicom BKG77 Issue I think

It is OK until you try to remove it and then it leaves remnants on the connector threads that are hard to remove. That is why I always cover the connector and some of the coax with electrical tape. You need to use a top quality tape out doors - I use Scotch Super 88. The tape prevents the putty fro...
by Dale H. Cook
Tue Dec 31, 2019 7:58 am
Forum: Everything else
Topic: Remembering Neil Innes
Replies: 0
Views: 646

Remembering Neil Innes

Neil Innes of the Bonzo Dog Doo-Dah Band and the Rutles, and frequent musical collaborator with Monty Python, passed away Sunday, Dec. 29, at the age of 75. The Bonzos were originally called the Bonzo Dog Dada Band, and were founded to do for popular music what the Dada movement did for art - give i...
by Dale H. Cook
Wed Dec 25, 2019 7:07 am
Forum: Everything else
Topic: HOLIDAY GREETNGS
Replies: 15
Views: 458

Re: HOLIDAY GREETNGS

Hope everyone has a Merry Christmas and Happy New Year,,,,,,,,,and may your phone remain "Silent Night" every night. Fossil - The same to you and to everyone else here. Every night has been a silent night for my phone since I retired from full-time work - my contract clients do not pay me enough to...
by Dale H. Cook
Mon Dec 09, 2019 6:34 am
Forum: AM Radio
Topic: How do the AM pros do this?
Replies: 10
Views: 630

Re: How do the AM pros do this?

cottagefarmer wrote:
Sun Dec 08, 2019 10:42 pm
How do the professionals electrically isolate such a peripheral?
We use a device called an isocoupler:

https://www.kintronic.com/product-categ ... socoupler/
by Dale H. Cook
Fri Nov 22, 2019 9:33 am
Forum: Ask the Engineers
Topic: Andrew coaxial switcher - 6740A
Replies: 5
Views: 277

Re: Andrew coaxial switcher - 6740A

The reason why it did not come up in a search may be that the crawler for that search engine examines only web pages, and there are no 6740A switches shown for sale on the Surplus Sales site. Those Andrew installation instructions are buried in a directory and not on a page.
by Dale H. Cook
Fri Nov 22, 2019 5:58 am
Forum: Ask the Engineers
Topic: Andrew coaxial switcher - 6740A
Replies: 5
Views: 277

Re: Andrew coaxial switcher - 6740A

I don't know if I would call it vintage - it was still in production when I started in radio. Admittedly, that was fifty years ago. :-)
by Dale H. Cook
Thu Nov 14, 2019 9:20 pm
Forum: AM Radio
Topic: Collins 820E-1/F-1 Screen Transformer
Replies: 11
Views: 970

Re: Collins 820E-1/F-1 Screen Transformer

I can't find any detailed info on the Collins 820E series transmitters on line. I don't find that surprising - online information about the more expensive '70s transmitters can be scarce Does this transmitter use the grounded screen technique where the screen supply is effectively in series with th...
by Dale H. Cook
Wed Nov 13, 2019 10:51 am
Forum: AM Radio
Topic: Collins 820E-1/F-1 Screen Transformer
Replies: 11
Views: 970

Re: Collins 820E-1/F-1 Screen Transformer

They guy who has the Collins 820E-1 transmitter in Iowa wants too much for the parts, so I would like to ask all of you to keep your eyes and ears peeled for an out of service 820E-1 or 820F-1 from which we might buy some parts. Continental estimates that there are only about six of them still in se...