Search found 436 matches

by kkiddkkidd
Sat Apr 22, 2017 7:40 pm
Forum: AM Radio
Topic: EO Pulsar 1KW problem
Replies: 7
Views: 401

Re: EO Pulsar 1KW problem

One my oldest clients nursed a Raytheon RA1000 far past it's useful life. It was not unusual to get a panicked 6am call from the owner every couple of weeks telling me that one of the meters was down and he had replaced a tube but that didn't fix it and he replaced another and another and another. M...
by kkiddkkidd
Sat Apr 22, 2017 7:12 pm
Forum: Ask the Engineers
Topic: Offical AMC 8 Transition Thread (was Sat. AMC-8)
Replies: 79
Views: 3511

Re: Offical AMC 8 Transition Thread (was Sat. AMC-8)

Part I of my dish moving points article is up at Barry Mishkind's:

http://www.thebdr.net/articles/ops/studio/AMC8-18.pdf

Barry does a lot of editing on articles so the spelling and grammatical errors are not necessarily mine...
by kkiddkkidd
Sat Apr 22, 2017 7:08 pm
Forum: Ask the Engineers
Topic: Offical AMC 8 Transition Thread (was Sat. AMC-8)
Replies: 79
Views: 3511

Re: Offical AMC 8 Transition Thread (was Sat. AMC-8)

If it has not been moved in several years, the acuator may be frozen solid. Sliding the clamp may be the only way to move it. I have been replacing frozen manual or motorized actuators with homemade adjustable links welded out of large all-thread and a few pieces of angle. What size is your mesh dis...
by kkiddkkidd
Wed Apr 19, 2017 5:55 pm
Forum: Ham Radio
Topic: Ham radio at NAB
Replies: 1
Views: 68

Re: Ham radio at NAB

Wish I could be there... I just canceled my flight and hotel for Saturday. Suddenly we have gotten very busy and am headed to a long distance, long time, part time client with major satellite and automation problems. I may try to make a last minute dash out Monday or Tuesday if I can get this mess p...
by kkiddkkidd
Wed Apr 19, 2017 5:41 pm
Forum: STL Engineering
Topic: Harris CD Link
Replies: 12
Views: 449

Re: Harris CD Link

GregHahn wrote:
Mon Apr 17, 2017 2:02 pm
My answer appears to be "yes". Both units take Harris part # 736-0292-000. :)
I believe that the TX uses a second high current supply for the PA that is also a generic open frame supply.
by kkiddkkidd
Wed Apr 19, 2017 11:10 am
Forum: Ask the Engineers
Topic: Offical AMC 8 Transition Thread (was Sat. AMC-8)
Replies: 79
Views: 3511

Re: Offical AMC 8 Transition Thread (was Sat. AMC-8)

I am having trouble getting a couple of my sometimes clients to OK reaiming their dish for the transition... I sent both an email basically saying that we need to be working on it now and that waiting until June 29th will be very expensive and problematic. but it probably wouldn't be a bad idea to d...
by kkiddkkidd
Wed Apr 19, 2017 11:05 am
Forum: Ask the Engineers
Topic: Offical AMC 8 Transition Thread (was Sat. AMC-8)
Replies: 79
Views: 3511

Re: Offical AMC 8 Transition Thread (was Sat. AMC-8)

It is important but not a huge issue that I have found. If I have a dish that is taking crosspol hits, I absolutely will check it at CoB just to be sure but typically just aim it and let it fly. So far, I haven't identified a problem. With that said, to do it 100% correctly, yes you need to aim duri...
by kkiddkkidd
Fri Apr 14, 2017 10:53 am
Forum: AM Radio
Topic: EO Pulsar 1KW problem
Replies: 7
Views: 401

Re: EO Pulsar 1KW problem

I looked after a 1kw Pulsar for several years and never had that problem. Is the fuse bad or blown? IE, filament just barely melted or really exploded. Can you check the normal current thru the fuse?

Later,
by kkiddkkidd
Tue Apr 04, 2017 8:40 am
Forum: Everything else
Topic: Cumulus buys Gates Air Transmitters
Replies: 9
Views: 418

Re: Cumulus buys Gates Air Transmitters

An old friend and entrepreneur has the saying... "With a good cash flow, you can be losing your ass every day and survive for years". I know of a number of small radio groups that have developed his saying into a business model.
by kkiddkkidd
Wed Mar 29, 2017 4:22 pm
Forum: FM Radio
Topic: STL dropouts....back today
Replies: 23
Views: 1030

Re: STL dropouts....back today

Here in middle TN, we get analog STLs taken over by distant stations almost every spring and fall. And have interference reports (but not total takeover) almost every severe wx event. During the dropouts, if you have a way to monitor your freq in analog at the rx end, turn off your STL tx and you ma...
by kkiddkkidd
Tue Mar 28, 2017 6:52 pm
Forum: Ask the Engineers
Topic: Offical AMC 8 Transition Thread (was Sat. AMC-8)
Replies: 79
Views: 3511

Re: Offical AMC 8 Transition Thread (was Sat. AMC-8)

Moved an old 10ft AFC dish today. This dish was physically moved and aimed at AMC8 at it's new location about 6 months ago so the bolts were still very workable. We got the dish reaimed and mostly zeroed in a record time of about 40 minutes. The owner (and engineer) and myself were chuckling to ours...
by kkiddkkidd
Mon Mar 27, 2017 12:17 pm
Forum: FM Radio
Topic: STL dropouts....back today
Replies: 23
Views: 1030

Re: STL dropouts....back today

I've attached my result using the simulator posted... Brandon, If someone showed me this plot, I would reply, "It will probably work but will probably not be reliable due to the significant Fresnel intrusion"... And will probably be worse at certain times of the year. I reverse engineered your endp...
by kkiddkkidd
Mon Mar 27, 2017 11:43 am
Forum: FM Radio
Topic: STL dropouts....back today
Replies: 23
Views: 1030

Re: STL dropouts....back today

Based on a very basic earth curviture calculator I found online ... Does that calculator allow for correct Fresnel zone clearance at 950 MHz? Your path needs to clear each obstruction by at least .6 of the first Fresnel zone radius at the distance of that obstruction. It does 950, 2.4g, 5.8g, 3.6, ...
by kkiddkkidd
Sun Mar 26, 2017 8:21 am
Forum: FM Radio
Topic: STL dropouts....back today
Replies: 23
Views: 1030

Re: STL dropouts....back today

There are no large lakes between the two sites, there are some creeks, etc.. We shoot from our studio to 3 different transmitter sites and this is the only site that experiences issues. The other two sites receive dishes are higher than the studio, this one is lower. I think that it has been sugges...
by kkiddkkidd
Mon Mar 20, 2017 7:00 pm
Forum: Ask the Engineers
Topic: TFT 3320 CAP converter
Replies: 5
Views: 192

Re: TFT 3320 CAP converter

TFT now truly means "Try'n Fix This"...