Search found 69 matches

by abwdvm
Fri Jul 27, 2018 11:23 am
Forum: STL Engineering
Topic: Nicom 900 link - STL Antennas Can you Mix and Match
Replies: 18
Views: 585

Re: STL Antennas, can you mix and match?

omb.jpg
Only photo I have
by abwdvm
Fri Jul 27, 2018 10:55 am
Forum: STL Engineering
Topic: Nicom 900 link - STL Antennas Can you Mix and Match
Replies: 18
Views: 585

Re: Nicom 900 link

A/c working fine.
This link was workable a few weeks ago, when RX moved to new location , and both RX an TX adjusted by tower crew, this problem began.
by abwdvm
Fri Jul 27, 2018 8:30 am
Forum: STL Engineering
Topic: Nicom 900 link - STL Antennas Can you Mix and Match
Replies: 18
Views: 585

STL Antennas, can you mix and match?

We had a pair of OMB STL antennas. The tower climber said one of them was damaged slightly where the cable attaches, so he happened to have another antenna he said would work. The link is not working, there is audio, but not broadcast-able. The audio improves when there is a .100 difference in the T...
by abwdvm
Fri Jul 27, 2018 8:26 am
Forum: STL Engineering
Topic: Nicom 900 link - STL Antennas Can you Mix and Match
Replies: 18
Views: 585

Nicom 900 link - STL Antennas Can you Mix and Match

What could it mean if the audio quality if better when the STL receiver freq is set .100 lower than the transmitter?
Better but not broadcast-able.
by abwdvm
Thu Jul 26, 2018 10:30 am
Forum: FM Radio
Topic: Source for the rubber bungs that seal cables on transmitter shacks
Replies: 4
Views: 261

Source for the rubber bungs that seal cables on transmitter shacks

Anyone have a source for the rubber bungs that seal the approx 4" openings on transmitter shacks?
by abwdvm
Mon Jul 02, 2018 4:09 pm
Forum: FM Radio
Topic: The eco-4 shivley antenna, with Mystery Ports
Replies: 13
Views: 470

Re: The eco-4 shivley antenna, with Mystery Ports

Thanks, we have an FCC attorney, and that part i don't have to worry about. We might interested in someone who knows the ECO hardware.
by abwdvm
Mon Jul 02, 2018 9:50 am
Forum: FM Radio
Topic: ECO-4, Tuning Information
Replies: 1
Views: 118

ECO-4, Tuning Information

Located the metal strip with holes in it... however I dont see the ones labeled for our exact frequency (That's a little joke) adj.jpg Also found this little sticker, I wonder if it was set to the previously, or at the factory. (This was not the freq we were on.) 95.5.jpg We checked the electrical b...
by abwdvm
Sun Jul 01, 2018 2:58 pm
Forum: FM Radio
Topic: The eco-4 shivley antenna, with Mystery Ports
Replies: 13
Views: 470

Re: The eco-4 shivley antenna, with Mystery Ports

Thanks you all for all the information. It has really been a great help.

Passing the unvarnished truth to the boss.
by abwdvm
Sat Jun 30, 2018 9:16 am
Forum: FM Radio
Topic: The eco-4 shivley antenna, with Mystery Ports
Replies: 13
Views: 470

The eco-4 shivley antenna, with Mystery Ports

We got it down, it's a two bay
wound.jpg
20180630_100126.jpg
Mystery port... Spooky
20180630_100126.jpg
antL.jpg
any_pop.jpg
any_black.jpg
by abwdvm
Fri Jun 29, 2018 1:07 pm
Forum: FM Radio
Topic: Inside the ECO-4
Replies: 7
Views: 304

Re: Inside the ECO-4

I assure you I have not worked on one of these. I understand how important those fingers are now. Once I get some time next week I will take a closer look. We also found what looks to be a spare tube.

IPA? Transformer set to 240 and +10?
20180629_130612.jpg
by abwdvm
Fri Jun 29, 2018 12:20 pm
Forum: FM Radio
Topic: Inside the ECO-4
Replies: 7
Views: 304

Inside the ECO-4

Got the ECO-4 out trailer-ed home and in the shop.
20180629_130723.jpg
20180629_130618.jpg
20180629_130719.jpg
by abwdvm
Fri Jun 29, 2018 10:34 am
Forum: FM Radio
Topic: Additional Info on ECO-4, new feeder, Shivley 6813
Replies: 4
Views: 131

Re: Additional Info on ECO-4, new feeder, Shivley 6813

I'll try to find that out asap
by abwdvm
Fri Jun 29, 2018 8:47 am
Forum: FM Radio
Topic: Additional Info on ECO-4, new feeder, Shivley 6813
Replies: 4
Views: 131

Re: Additional Info on ECO-4, new feeder, Shivley 6813

All images are of the old site, 3 1/8 feeder. Heading out right now to remove the transmitter.
by abwdvm
Fri Jun 29, 2018 8:33 am
Forum: FM Radio
Topic: Additional Info on ECO-4, new feeder, Shivley 6813
Replies: 4
Views: 131

Additional Info on ECO-4, new feeder, Shivley 6813

1. Licensed ERP of 3600? Effective Radiated Power 3600 Watts Polarization: Horizontal Vertical Effective Radiated Power (ERP): 3.6 3.6 kW ERP 2. How many antenna bays? Can you tell who made them? (shot a picture) 4 bays, 2 section, Shivley 6813 https://www.shively.com/product/6813/ 3. How many feet ...