Search found 17 matches

by 50ohmload
Tue Jan 22, 2019 12:28 pm
Forum: FM Radio
Topic: Harris FM 2.5 K retirement party
Replies: 0
Views: 239

Harris FM 2.5 K retirement party

I can pull out parts from an old Harris FM 2.5 K transmitter if someone out there is in need or wants to stock some repair parts. It has been collecting dust for a decade or more but has been indoors and looks pretty good inside. PM me please.
by 50ohmload
Wed Jul 11, 2018 4:56 am
Forum: AM Radio
Topic: BE AM 1A Power meter not working in FWD
Replies: 16
Views: 979

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

So true! And now that you mention BE I see it right in the title over and over. I miss having a working brain on days like this.

As it happens, a BE AM1A replaced the Harris MW1A from which those parts came. Isn’t it ironic?
by 50ohmload
Tue Jul 10, 2018 5:52 pm
Forum: AM Radio
Topic: BE AM 1A Power meter not working in FWD
Replies: 16
Views: 979

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

I hope I'm not too late. I have a set of 4 meters (Multimeter, Amperes, Volts, Watts) available. They were pulled from a working retired transmitter (Harris MW 1A) and are still mounted together on their unpainted aluminum mounting plate. I also have spare PA modules that were pulled out for repair ...
by 50ohmload
Mon Jul 27, 2015 6:11 am
Forum: FCC Discussion
Topic: Form 315 question
Replies: 3
Views: 1325

Re: Form 315 question

Thank you!
by 50ohmload
Thu Jul 02, 2015 1:52 pm
Forum: FCC Discussion
Topic: Form 315 question
Replies: 3
Views: 1325

Form 315 question

I have been checking out FCC Form 315 for a group with FMs outside of an Arbitron market. The Interim Contour-overlap Methodology section of Worksheet 3 includes a simplified example on page 5. That example makes several references to various contour overlaps of the example stations. There are no vi...
by 50ohmload
Sun Dec 23, 2012 6:21 pm
Forum: On-Air Studios
Topic: Sparta and LPB mixers
Replies: 6
Views: 4477

Re: Sparta and LPB mixers

After having a careful look it is clear that everything is similar but different in the two.

So, if anyone out there is supporting a Sparta mixer of the same era, I can provide lots of spare parts - just PM me. Two power supplies, one complete mixer, lots of parts and the chassis of the other.
by 50ohmload
Wed Nov 07, 2012 11:47 am
Forum: On-Air Studios
Topic: Sparta and LPB mixers
Replies: 6
Views: 4477

Re: Sparta and LPB mixers

You can see Sparta pics at:
http://50ohmload.shutterfly.com/
I don't have detailed pics of the LPB cards or mixer, but I did post what I do have.
by 50ohmload
Tue Nov 06, 2012 11:29 am
Forum: On-Air Studios
Topic: Sparta and LPB mixers
Replies: 6
Views: 4477

Re: Sparta and LPB mixers

This Sparta does have edge connectors. It appears that both the design of and the hardware inside the two mixers is remarkably similar. I say that without actually being able to compare them side-by-side (yet). The switches, large pots (actually step attenuators), transformers, and even transistors ...
by 50ohmload
Mon Nov 05, 2012 8:35 pm
Forum: On-Air Studios
Topic: Sparta and LPB mixers
Replies: 6
Views: 4477

Sparta and LPB mixers

I noticed several similarities between the LPB Signature series mixers and a Sparta mixer I came across recently. Do they have a common ancestry? Do modules from one work in the other?
by 50ohmload
Sat Jun 23, 2012 9:32 am
Forum: STL Engineering
Topic: IP Audio CODECs
Replies: 11
Views: 3814

Re: IP Audio CODECs

I have one Bric-Link pair as an STL and it has been terrific. The only issues I have had with that STL link have been with the carrier, Verizon, and with one of the Adtran routers. The web interface makes setup easy. The LEDs on the front make it a snap to verify the connection status and the audio ...
by 50ohmload
Sat Jun 23, 2012 9:08 am
Forum: STL Engineering
Topic: Troubleshooting an intermittent STL ( maybe )
Replies: 7
Views: 2824

Re: Troubleshooting an intermittent STL ( maybe )

I had the same sort of problem, intermittent audio dropouts, on a Moseley Starlink delivering AES audio. In my case, there was no correlation with the time of day. The problem turned out to be occasional overmodulation from an adjacent-channel analog STL located within the beamwidth of the receive d...
by 50ohmload
Thu Apr 07, 2011 10:42 am
Forum: Internet Streaming
Topic: stream multiple stations?
Replies: 4
Views: 2253

stream multiple stations?

Has anyone set up one PC to stream multiple stations, say 3, simultaneously? How about with a Windows 7 home premium computer - are there any recommendations for a sound card that will work well with Win7, and ios it balanced or unbalanced? Many thanks!
by 50ohmload
Mon Aug 02, 2010 1:23 pm
Forum: AM Radio
Topic: Replacement Mica capacitor
Replies: 14
Views: 2339

Re: Replacement Mica capacitor

I recorded 100.6 and 101.3 on the oldies, 107.9 and 113.0 on the newbies, with the transmitter chassis at 77.9 degrees. This was from running at 75% power in the afternoon.
by 50ohmload
Mon Aug 02, 2010 11:20 am
Forum: AM Radio
Topic: Replacement Mica capacitor
Replies: 14
Views: 2339

Re: Replacement Mica capacitor

I am exploring an upgrade from 293 to 294 caps because I don't trust the newer 293s to handle their rated current load. I checked two older Sangamo caps against two newer CDM caps - all the same type, capacitance, voltage and current ratings. Regardless of physical location, the new ones run 10 to 1...
by 50ohmload
Sun Aug 01, 2010 6:37 pm
Forum: AM Radio
Topic: Replacement Mica capacitor
Replies: 14
Views: 2339

Re: Replacement Mica capacitor

Has anyone noticed that newer mica caps run warmer than older ones?