Search found 3528 matches

by Deep Thought
Wed Sep 16, 2020 8:32 pm
Forum: FM Radio
Topic: Quality translator
Replies: 22
Views: 513

Re: Quality translator

The VS300 does seem to be overly sensitive (in my opinion) to the slightest reflected power. One station had a 3-cavity bandpass filter on its output and that forced the VS300 to cut back power drastically. That is the fault of the bandpass filter. I installed a four translator combined site in Feb...
by Deep Thought
Tue Sep 15, 2020 7:18 pm
Forum: FM Radio
Topic: Quality translator
Replies: 22
Views: 513

Re: Quality translator

Another vote for the VS300. Pretty much an all in one transmitter package (audio, remote control, email alarms, etc.) and they are tough little things. Not quite as tolerant of criminal neglect as the old Crowns, which have been documented still running as the building burned down around it or with ...
by Deep Thought
Wed Sep 02, 2020 3:42 pm
Forum: FM Radio
Topic: Harris THE-1 FM Exciter Transformer
Replies: 4
Views: 369

Re: Harris THE-1 FM Exciter Transformer

alleo wrote: Wed Sep 02, 2020 1:59 pmMark Person would have a repair manual for it.
FYI, Mark retired and shut down his business.
by Deep Thought
Tue Aug 25, 2020 10:45 am
Forum: AM Radio
Topic: Nautel AMFET ND5 blowing output network caps
Replies: 4
Views: 308

Re: Nautel AMFET ND5 blowing output network caps

My experience with that transmitter having output network issues is almost always a load or lightning problem. Normally the VSWR circuit will shut the PWM drive off instantly if the load goes sideways but if that is no longer working correctly it'll keep pumping away until you blow the FETs in a pow...
by Deep Thought
Fri Aug 21, 2020 11:37 am
Forum: AM Radio
Topic: Old radio station (back)
Replies: 3
Views: 154

Re: Old radio station (back)

I hope that this isn't a translator tied to WCHK that is running without the AM on.
by Deep Thought
Thu Aug 20, 2020 4:14 pm
Forum: AM Radio
Topic: Old Gates Radio RF Coil Info
Replies: 10
Views: 210

Re: Old Gates Radio RF Coil Info

Here's the secret decoder ring for Gates/Harris coils. Numbers to left of letters = value in uH. First letter is "V" for variable, "F" for fixed, Next one or two letters are: "A" for 1/4" flat ribbon, 10 amps "B" for 3/8" flat ribbon, 15 amps "C" for 1/2" flat ribbon, 20 amps "BT" for 3/8" tubing, 3...
by Deep Thought
Thu Aug 20, 2020 2:10 pm
Forum: AM Radio
Topic: base insulator
Replies: 9
Views: 833

Re: base insulator

alleo wrote: Thu Aug 20, 2020 9:00 am You can always skirt the tower ,its a way to get on till you can find the insulator.tower guys have hicked the towers to replace insulator.
Only as a last resort, and he already solved the problem.
by Deep Thought
Wed Aug 19, 2020 10:17 pm
Forum: AM Radio
Topic: Old Gates Radio RF Coil Info
Replies: 10
Views: 210

Re: Old Gates Radio RF Coil Info

I've got my cheat sheet for these at the office. The mystery numbers are the current rating.
Once I find it I'll post it.
by Deep Thought
Wed Aug 12, 2020 11:28 am
Forum: Ask the Engineers
Topic: Disabling Windows Features Updates
Replies: 27
Views: 1108

Re: Disabling Windows Features Updates

Nathaniel Steele wrote: Wed Aug 12, 2020 10:57 am also in regards to windows 10 ltsc, apparently you can not install office 365 on it....MS really doesn't want you to use it....
That is because LTSC is intended for "kiosk" type installations running software which does not need to be updated, not office desktops.
by Deep Thought
Sun Aug 09, 2020 12:25 pm
Forum: Ask the Engineers
Topic: Disabling Windows Features Updates
Replies: 27
Views: 1108

Re: Disabling Windows Features Updates

It is essentially a "frozen" version of W10Pro/Enterprise which does not receive feature updates. That means (for example) if you have the "2018" version installed the only things which will run on it in the future are programs and hardware which ran on that version. If they require an updated API o...
by Deep Thought
Fri Aug 07, 2020 11:09 am
Forum: FCC Discussion
Topic: Walmart Drive-In Movies Using FM Transmitter
Replies: 2
Views: 607

Re: Walmart Drive-In Movies Using FM Transmitter

A single part 15-compliant transmitter located on a strategic parking light pole should be able to cover a ~250-500 foot radius depending on the channel used, which is plenty for a parking lot movie setup. The trick in most areas is going to be finding an open channel.
by Deep Thought
Tue Aug 04, 2020 10:53 pm
Forum: Ask the Engineers
Topic: Spectrum Analyzer Recommendation
Replies: 3
Views: 118

Re: Spectrum Analyzer Recommendation

Define: "fortune". You should also figure out what you want to do with it because that'll inform the choices. You definitely want to go for the tracking generator option. I bought one of these a couple years ago and have been very happy with it. For $2500 it is a great deal and the support from the ...
by Deep Thought
Wed Jul 29, 2020 7:06 pm
Forum: STL Engineering
Topic: Armstrong X-Link transmitter
Replies: 10
Views: 404

Re: Armstrong X-Link transmitter

ChuckG wrote: Wed Jul 29, 2020 5:29 pm The stuff seems to run until you power it down, then won't come back.
I've seen some which would no longer start under load. Changing the capacitors usually brings them back but these power supplies are so cheap now that it is almost not cost-effective to spend the time.
by Deep Thought
Mon Jul 27, 2020 11:19 am
Forum: AM Radio
Topic: New engineer - questions
Replies: 18
Views: 755

Re: New engineer - questions

Fits in an area of 1/3 acre and has a signal that covers at least twice that! Reminds me of fiberglass rod somebody in Canada was selling that wouldn't broadcast much past it's own shadow, oh but it too was FCC approved. That's Valcom, and they do work if you are on the upper part of the band. They...
by Deep Thought
Sat Jul 25, 2020 9:29 pm
Forum: AM Radio
Topic: New engineer - questions
Replies: 18
Views: 755

Re: New engineer - questions

Last point. There is a newly developed antenna for AM broadcast called the HEBA, which doesn’t need the big ground system nor height that would not be practical in a residential area, that is claimed to be able to fit within such a lot of 1/3 acre or more. Yeah, I wouldn't plan on using one of thes...