Search found 65 matches

by Joe Friday
Tue Apr 18, 2017 7:40 pm
Forum: AM Radio
Topic: EO Pulsar 1KW problem
Replies: 9
Views: 752

Re: EO Pulsar 1KW problem

Thanks for the responses. The failed fuses are always a non-catastrophic failure, just barley melted. I don't believe normal current draw is a problem, as I briefly replaced the 3A fuse with a 1A fuse, and the transmitter ran for about 5 minutes before I swapped it out for the proper size. At this p...
by Joe Friday
Wed Apr 12, 2017 8:38 pm
Forum: AM Radio
Topic: Collins 310W-1 Exciter Divider
Replies: 2
Views: 307

Re: Collins 310W-1 Exciter Divider

I take care of one of these transmitters, but don't know if the exciter manual is still on site or not. I may have the chance to drop by tomorrow, and will get back to you if I turn something up.

Kevin
by Joe Friday
Wed Apr 12, 2017 8:33 pm
Forum: AM Radio
Topic: EO Pulsar 1KW problem
Replies: 9
Views: 752

EO Pulsar 1KW problem

I look after a 1KW EO Pulsar that has a strange problem. In the exciter chassis, it will occasionally blow the 3A +15V fuse. It is a non-catastrophic failure, and the transmitter immediately returns to air following replacement of the blown fuse. Generally, it will run between 4-6 months between blo...
by Joe Friday
Tue Apr 04, 2017 5:26 am
Forum: FM Radio
Topic: Sine Systems RAK-2
Replies: 3
Views: 274

Sine Systems RAK-2

I have used the Sine RFC-1/B for many years, and generally like them. I came across info on the RAK-2 and it looks interesting, as it gives the RFC-1/B a web interface and the ability to e-mail or text alarm conditions. Anyone have any experience with one of these?

Thanks!

Kevin
by Joe Friday
Fri Feb 17, 2017 6:17 pm
Forum: FM Radio
Topic: Reviving a dormant antenna system
Replies: 11
Views: 665

Re: Reviving a dormant antenna system

FYI...this is a non-comm religious station, and every dime that we have spent has been given as a donation to the project. What I have done so far: I have swept the antenna system with my TG/RLB, and get a return loss of 26 DB at the carrier frequency. Next I fired 200W into the system, and calculat...
by Joe Friday
Sat Feb 11, 2017 3:18 am
Forum: FM Radio
Topic: Reviving a dormant antenna system
Replies: 11
Views: 665

Reviving a dormant antenna system

I am in the process of working on a CP for a facility that has been off the air since 2001. The CP is at the same location, class, and ERP as the original, and they would like to make use of the the old antenna and feedline. The system comprises a 4 bay ERI HP rototiller, end fed, and approximately ...
by Joe Friday
Wed Jan 18, 2017 6:25 am
Forum: FM Radio
Topic: How Old is Old?
Replies: 16
Views: 1286

Re: How Old is Old?

I take care of a class B that had a burn out of their HJ8 line about six years ago, before I started taking care of it. They considered a new antenna at the time, but the lead time was an issue. The antenna in an early six bay ERI rototiller, was installed in the early 70's. ERI was able to supply a...
by Joe Friday
Wed Jan 11, 2017 6:27 am
Forum: FM Radio
Topic: ECO-4 question
Replies: 8
Views: 616

Re: ECO-4 question

Well...that was the part I was missing. Thanks for helping with the connection info to TB10-3 on the PC85 board. It appears that it must still be in the circuit somehow. I'll head back out to the site and look things over and see if I can figure out what error I made. Thanks for looking at the diagr...
by Joe Friday
Mon Jan 09, 2017 6:55 pm
Forum: FM Radio
Topic: ECO-4 question
Replies: 8
Views: 616

Re: ECO-4 question

Well...I guess that is where I am stumped. If I am driving the PA with a direct connection to the N connector on the bottom of the chassis, how does the detector board come into to play? R1 is connected to TB10-3 on the PC-85A board, and that is what I am trying to figure out. The IPA has a refelect...
by Joe Friday
Sun Jan 08, 2017 7:07 pm
Forum: FM Radio
Topic: ECO-4 question
Replies: 8
Views: 616

Re: ECO-4 question

I have used this same transmitter as a driver with this box, and other ECO series transmitters in the past without issue, and have always been able to easily achieve a low VSWR match. I know some transmitters present something other than a 50 ohm impedance to the IPA, but in this case, I believe tha...
by Joe Friday
Sat Jan 07, 2017 11:27 am
Forum: FM Radio
Topic: ECO-4 question
Replies: 8
Views: 616

ECO-4 question

Need some help with a ECO-4 issue. Last week, I lost the IPA in this transmitter. I returned the next day with a 250W Crown that I have used previously as a sub for the IPA section in this same transmitter. I patched the Crown directly to the input connector on the bottom of the PA cabinet. I turned...
by Joe Friday
Wed Dec 28, 2016 7:23 am
Forum: FM Radio
Topic: Energy Onix Blower
Replies: 5
Views: 488

Re: Energy Onix Blower

I don't recall the manufacturer of the blower, but I did contact them about a replacement once. Essentially they don't retail the blowers, but would be willing to sell one to you...if you could wait 3 weeks or so. For a premium, they could provide "expedited delivery" and would be happy to ship your...
by Joe Friday
Tue Dec 27, 2016 8:17 am
Forum: From the Trenches
Topic: Your Biggest On Air Screw up..
Replies: 30
Views: 5383

Re: Your Biggest On Air Screw up..

When I was brand new in the business, I worked for a TV-FM-AM combo. One day, while working in TV master control, I was building some sort of cable in the rack that housed our master control switcher. Endeavoring to do the best work possible, and impress the folks who had taken a chance on this gree...
by Joe Friday
Sun Dec 25, 2016 10:20 pm
Forum: On-Air Studios
Topic: Auditronics 2500 manual
Replies: 2
Views: 275

Re: Auditronics 2500 manual

PM sent. Thanks!

Kevin
by Joe Friday
Sat Dec 24, 2016 3:41 pm
Forum: On-Air Studios
Topic: Auditronics 2500 manual
Replies: 2
Views: 275

Auditronics 2500 manual

Does anyone have a orphan manual for an Auditronics 2500 series console? Or possibly a link to an on-line source? I need to rehab one and get it ready to go back to work. I have looked on the Wheatstone website, and they don't have anything quite that old.

Thanks!
(and Merry Christmas!)

Kevin