Search found 170 matches

by RodeoJack
Sun Jun 17, 2018 11:03 pm
Forum: AM Radio
Topic: Wavering field intensity
Replies: 9
Views: 521

Re: Wavering field intensity

That probably explains why this site has been an interesting topic around here, but has never really concerned anyone.
by RodeoJack
Sun Jun 17, 2018 8:11 pm
Forum: AM Radio
Topic: Wavering field intensity
Replies: 9
Views: 521

Re: Wavering field intensity

Maybe a bit off-topic, but something to be aware of before you go out to do the monitor points. You've probably seen the one with a freeway running between the towers. This is one of my client stations in Eastern Washington. 3 towers in this one and yes... the tracks were here first. Don't know why ...
by RodeoJack
Sun Jun 17, 2018 8:01 pm
Forum: AM Radio
Topic: DX-10 Controller Probs
Replies: 10
Views: 1468

Re: DX-10 Controller Probs

Bringing this forward, because one of my DX-10s bit the dust this month with the same symptoms. In my case, the problem was the caps, which were past their expected life anyway, but didn't appreciate being cooped up in a room with a recently-failed air conditioner. A couple of weeks at 120 degrees p...
by RodeoJack
Fri Jun 15, 2018 5:55 pm
Forum: AM Radio
Topic: BE AM 1A Power meter not working in FWD
Replies: 16
Views: 730

Re: BE AM 1A Power meter not working in FWD

You're right.
My meter's bad, but the scenario doesn't involve REF readings.

Got on the keyboard before coffee this morning. :roll:
by RodeoJack
Thu Jun 14, 2018 10:29 pm
Forum: AM Radio
Topic: BE AM 1A Power meter not working in FWD
Replies: 16
Views: 730

Re: BE AM 1A Power meter not working in FWD

I serviced an AM-1A this week that has a power meter that will only go up to about 800 watts. At that point, it hits a wall. You can tap it and move it around a bit, but it pretty much jams at that point. Base readings indicate the transmitter's OK. By contrast, under normal circumstances, the ref s...
by RodeoJack
Mon May 28, 2018 7:39 pm
Forum: AM Radio
Topic: Transmitter plant ambient temps?
Replies: 15
Views: 1202

Transmitter plant ambient temps?

I think this may be covered in an earlier thread. Feel free to redirect if you know where it is. I'm currently dealing with a repair crisis, where a failed AC unit allowed a DX-10 to operate for several weeks in near-100 degree temps. That appears to have resulted in the final assault on already-age...
by RodeoJack
Tue May 08, 2018 10:45 am
Forum: Ask the Engineers
Topic: STL Frequencies
Replies: 12
Views: 356

Re: STL Frequencies

Hey Chuck: The brand is Ubiquity. My friend said there is one in use in relatively flat terrain providing high speed internet at a path distance of around 12 miles. Fossil I've used quite a bit of this brand, though not yet their model with the farthest range. Generally, they've been surprisingly r...
by RodeoJack
Fri Apr 20, 2018 2:03 pm
Forum: Everything else
Topic: A bit of AM History
Replies: 4
Views: 321

Re: A bit of AM History

Geez.... at least use cart labels over Scotch Tape... or the like!

Most of the owners I worked for would have freaked if I'd done that to their rigs :-)
by RodeoJack
Sun Apr 08, 2018 10:16 pm
Forum: AM Radio
Topic: GATES ONE IRF-350 REPLACEMENT
Replies: 9
Views: 734

Re: GATES ONE IRF-350 REPLACEMENT

Not all IRF350's are created equal. Some are Chinese knockoffs do not hold up under power. If you have IRF350's failing for unknown reasons, better check the manufacturer, could be they're the cheap knockoffs. I've bought IRFP350s from several outlets, and for prices ranging from about 80 cents to ...
by RodeoJack
Thu Apr 05, 2018 11:18 am
Forum: Ask the Engineers
Topic: Sage ENDEC Printing
Replies: 8
Views: 400

Re: Sage ENDEC Printing

All of what Chris suggests works very well. Some time back, I set up the Endecs I watch to FTP alerts to a server at my office. The FTP software routes the received alerts to a subfolder I keep for each station in my circuit. I do that mainly for backup and troubleshooting purposes, and because it w...
by RodeoJack
Thu Apr 05, 2018 11:06 am
Forum: AM Radio
Topic: GATES ONE IRF-350 REPLACEMENT
Replies: 9
Views: 734

Re: GATES ONE IRF-350 REPLACEMENT

The IRFP is a different case. You can find the right part fairly easily (Mouser, Newark, Digikey, Ebay), so there's no urgent reason to modify the boards. I haven't had any trouble with the lead-free variants. So-far, I haven't found one version that seems to be better (or worse) than others, so I s...
by RodeoJack
Tue Apr 03, 2018 1:42 pm
Forum: FM Radio
Topic: National over Eimac or Econco
Replies: 24
Views: 1263

Re: National over Eimac or Econco

So... given that Eimac and Econco are both divisions of Communications and Power Industries, Inc (CPI), are they basically coming out of the same factory and, if so, what would the practical difference be?
by RodeoJack
Sun Apr 01, 2018 11:21 am
Forum: AM Radio
Topic: GatesAir suspends AM TX sales (Radio World)
Replies: 33
Views: 1491

Re: GatesAir suspends AM TX sales (Radio World)

They might as well stay gone then. I'm not sure what area they'd try to compete with, at this point. Everything from 10kW down is covered pretty well by N and B. Maybe they could go after the high power market, but could they compete and turn out enough of them to cover the R&D for the new tech the...
by RodeoJack
Sat Mar 17, 2018 9:39 am
Forum: AM Radio
Topic: GatesAir suspends AM TX sales (Radio World)
Replies: 33
Views: 1491

Re: GatesAir suspends AM TX sales (Radio World)

Be careful about your impressions of Australia. I have a brother and a niece who live over there. They compare Fosters with some of the cheap American stuff you see, blasted on our TVs... and when I suggested Outback Steakhouse was modeled after the spirit of their country, they nearly choked on the...
by RodeoJack
Sun Feb 25, 2018 10:57 am
Forum: FCC Discussion
Topic: Management ignored me when I suggested LPFM....
Replies: 21
Views: 1095

Re: Management ignored me when I suggested LPFM....

If your area has that many signals, chances are an existing LPFM will eventually become available. Lots of people built these things without a practical knowledge of their care and feeding. Once they've had their fill of finding reliable volunteer staff, keeping equipment running, possibly paying re...