Search found 597 matches

by kkiddkkidd
Fri Jun 20, 2014 11:38 am
Forum: FM Radio
Topic: Backup processor recommendation
Replies: 10
Views: 1628

Re: Backup processor recommendation

That describes most of the engineers that I know... Hmmmm.... Looking in the mirror, yep. On the subject of CRL, I have a stack of non-functional, non-repairable CRL AM & FM equipment at my shop due to lack of module support. Be aware of anything sold on Ebay unless it has a money back guarantee. Un...
by kkiddkkidd
Sun Jun 01, 2014 8:43 am
Forum: FM Radio
Topic: EAS Recommendations?
Replies: 9
Views: 2153

Re: EAS Recommendations?

I concur on the Sage. We installed 2ea DAS units and 8 new Sages if I am counting correctly. The Sage is much easier to setup. We have had one of each brand totally lose programming for some reason and one early Sage that had to be returned for service within a month of installation.
by kkiddkkidd
Thu May 29, 2014 2:31 pm
Forum: AM Radio
Topic: Power Rock-13Khz oscillation
Replies: 18
Views: 2866

Re: Power Rock-13Khz oscillation

Check the output of the audio processor?
by kkiddkkidd
Wed May 28, 2014 2:12 pm
Forum: AM Radio
Topic: Ground Radial System
Replies: 17
Views: 3643

Re: Ground Radial System

Does the copper mesh ground screen lay on top of the radials or beneath? and is it bonded only to the copper strap that surrounds the concrete tower base? Please give me your insight on the proper way to put this back together. Thank you. The reason for the question is we are repairing what copper ...
by kkiddkkidd
Fri May 09, 2014 7:25 pm
Forum: AM Radio
Topic: Driving impedances
Replies: 5
Views: 1408

Re: Driving impedances

Wow, and I thought that folks attempting to crank an obviously broken array back in was bad... You can also have someone go to the FCC and pull the physical license file for that station. There is probably a wealth of information that was filed with the original application to cover that isn't avail...
by kkiddkkidd
Sun May 04, 2014 5:53 am
Forum: AM Radio
Topic: Cablewave FLC-38-50J 3/8" male connectors
Replies: 6
Views: 1668

Re: Cablewave FLC-38-50J 3/8" male connectors

I know that it isn't a "good engineering practices" solution but I used plain old RG8 PL259 connectors on some surplus 3/8ths for ham radio. It was years ago, but as I recall they fit snugly and was able to carefully solder the shield to the connectors without incident. I _might_ still have a couple...
by kkiddkkidd
Mon Apr 21, 2014 5:06 pm
Forum: Ask the Engineers
Topic: Seeking Tips for Satellite Troubleshooting
Replies: 25
Views: 3941

Re: Seeking Tips for Satellite Troubleshooting

Ditto what the Doc said...I had to clear wasps from a feed horn last year. and replace the failed feed window with a well-placed Scotch 33 container. Next, I would get a new LNB, just in case your spare LNB was actually a dead one that never found its way to the trash can. AND make sure that the re...
by kkiddkkidd
Mon Mar 31, 2014 6:22 pm
Forum: TV Engineering
Topic: CPI Tube issues
Replies: 24
Views: 3947

Re: CPI Tube issues

Reading all this, I am ever so glad that I decided to stick with radio...
by kkiddkkidd
Sat Mar 08, 2014 6:11 pm
Forum: AM Radio
Topic: 5.8ghz wireless on hot AM tower
Replies: 9
Views: 2030

Re: 5.8ghz wireless on hot AM tower

I would suggest that you make sure that the Cat5 shield is bonded to the tower at regular (no more than 45 degree) intervals or you will have a burn-out. I had planned to keep it at about .1 wavelength (grounded in the center) but we ran out of daylight during the installation and it got grounded a...
by kkiddkkidd
Wed Mar 05, 2014 9:02 pm
Forum: AM Radio
Topic: 5.8ghz wireless on hot AM tower
Replies: 9
Views: 2030

Re: 5.8ghz wireless on hot AM tower

I just did this on a hot AM tower a couple of weeks ago. IF you have (or can get) 120vac power above the base (it was already on our tower for lighting), a UBNT NanoBridge radio set up as an AP and a ground mounted UBNT NanoStation set up as a client is working great. I considered using fiber to cro...
by kkiddkkidd
Mon Feb 10, 2014 1:08 pm
Forum: TV Engineering
Topic: Nano bridge M 5 GHZ for use on DTV as STL link
Replies: 5
Views: 1368

Re: Nano bridge M 5 GHZ for use on DTV as STL link

I am not a TV engineer but am familiar with the NanoBridge products. If it requires gigabit speeds NO. But they should pass RTP/UDP/IP. If you can run your encoder/decoder on a medium speed lan, you can run it on a UBNT wireless most of the time. There are some latency issues that I have heard about...
by kkiddkkidd
Sun Feb 09, 2014 5:02 pm
Forum: FM Radio
Topic: 4CX20000D
Replies: 10
Views: 1958

Re: 4CX20000D

All new tubes are junk... New or rebuilt either. If it was built or rebuilt in the past 15 years, it is junk. I had pretty good luck with Svetlanta tubes but they seem to have disappeared from the US market. I looked back thru some transmitter logs are regular clients and found that we are getting s...
by kkiddkkidd
Fri Jan 31, 2014 6:02 pm
Forum: AM Radio
Topic: best source for 4-400a tubes
Replies: 46
Views: 6676

Re: best source for 4-400a tubes

I still run a RCA BTA 1r3 24/7 and the only tubes that last are the Amperex branded tubes made by Covimag. I get about 2 years on a set. By the way no chimneys are used. Yes, but correct me if I'm wrong, the RCA had a blower for each tube. The BTA 1R that I have sitting in my warehouse only has one...
by kkiddkkidd
Fri Jan 31, 2014 5:56 pm
Forum: AM Radio
Topic: best source for 4-400a tubes
Replies: 46
Views: 6676

Re: best source for 4-400a tubes

I wouldn't worry too much about that 1 KW rule. What I would worry about is the additional electric bill just heating the bigger tubes and the cooling blower. That alone may be an additional $1,500-$2,000/yr. AND...the tubes are a LOT more expensive. This could end up being more expensive than buyi...
by kkiddkkidd
Fri Jan 31, 2014 5:55 pm
Forum: AM Radio
Topic: best source for 4-400a tubes
Replies: 46
Views: 6676

Re: best source for 4-400a tubes

and the fun continues. We used to get 3 years out of tubes. I believe the tubes being made now just are not what they used to be. These that are failing now have been in 18 months, about half the life of the previous set. We have also seen this on 3cx3000a7 on another station he has. So far, Zonum ...