Search found 878 matches

by w9wi
Mon Jun 18, 2018 1:45 pm
Forum: Ask the Engineers
Topic: Peaking a dish alone
Replies: 0
Views: 32

Peaking a dish alone

Faced a bit of a challenge this morning. I had a satellite dish not quite delivering enough signal on Galaxy 19. Needed to peak it up -- but there's no motor on this dish. The feed is 25 feet in the air so temporarily connecting a spectrum analyzer to the back of the LNB wasn't really an option. It'...
by w9wi
Fri Jun 15, 2018 2:22 pm
Forum: General Computers
Topic: Avocent HMIQSHDI restore factory defaults?
Replies: 1
Views: 43

Avocent HMIQSHDI restore factory defaults?

I have a HMIQSHDI KVM transmitter configured for an unknown IP address. I need to reconfigure for a specific network. You change the IP by connecting the transmitter directly to a receiver, then connecting a RS-232 terminal to the receiver and using a serial menu. Problem is, for that to work the re...
by w9wi
Fri Jun 15, 2018 2:16 pm
Forum: TV Engineering
Topic: Arris DSR-4460 won't authorize on unencrypted feed
Replies: 13
Views: 147

Re: Arris DSR-4460 won't authorize on unencrypted feed

Over the years I've found that different decoders are better for certain applications than others. We've used Tandberg / Ericsson for satellite downlinks and ASI decoders for years without too much fuss, but the 8200 is troublesome if you're trying to decode an IP stream. Upcoms (yeah, right!) have...
by w9wi
Thu Jun 14, 2018 8:28 pm
Forum: TV Engineering
Topic: Arris DSR-4460 won't authorize on unencrypted feed
Replies: 13
Views: 147

Re: Arris DSR-4460 won't authorize on unencrypted feed

I'm glad I took this shot at getting a look at the web GUI. The front-panel UI on these Arris (Motorola) IRDs is pretty weird -- I took our .2 off the air for a few minutes last week just trying to write down where we currently were, without changing anything... It'll be a LOT easier with the browse...
by w9wi
Thu Jun 14, 2018 2:36 pm
Forum: TV Engineering
Topic: Arris DSR-4460 won't authorize on unencrypted feed
Replies: 13
Views: 147

Re: Arris DSR-4460 won't authorize on unencrypted feed

Ouch. Sorry to hear that...
by w9wi
Thu Jun 14, 2018 12:03 pm
Forum: TV Engineering
Topic: Arris DSR-4460 won't authorize on unencrypted feed
Replies: 13
Views: 147

Re: Arris DSR-4460 won't authorize on unencrypted feed

This is resolved.

(somehow, the firmware upgrade process switched it to DCII mode -- it's supposed to be unencrypted MPEG)
by w9wi
Thu Jun 14, 2018 10:43 am
Forum: TV Engineering
Topic: Arris DSR-4460 won't authorize on unencrypted feed
Replies: 13
Views: 147

Arris DSR-4460 won't authorize on unencrypted feed

We did a firmware upgrade on a DSR-4460 this morning -- afterwards, it won't authorize. It's tuned to the right downlink parameters (frequency, symbol rate, etc.) -- I have a "SIGNAL" light & it goes away if I intentionally enter the wrong DL frequency or pull the RF cable. But the "AUTHORIZED" ligh...
by w9wi
Wed Jun 13, 2018 8:58 am
Forum: TV Studio Engineering
Topic: Weather Radar
Replies: 5
Views: 128

Re: Weather Radar

What would be the legality of directly broadcasting the NOAA feed off the Weather Service website?
by w9wi
Tue Jun 12, 2018 7:58 am
Forum: From the Trenches
Topic: Strange skills learned
Replies: 10
Views: 217

Strange skills learned

A broadcast engineer is, of course, expected to learn on the job. Sometimes, one is expected to learn skills WAY outside the job description. Like deer herding. As I'm sure is the case at many of your stations, our employee parking lot is fenced & gated. Yesterday morning, a fawn decided to follow o...
by w9wi
Thu Jun 07, 2018 6:24 am
Forum: AM Radio
Topic: Restoring a small transmitter
Replies: 24
Views: 4668

Re: Restoring a small transmitter

Sounds like it may be an AL-811, with three 811A tubes in parallel. A copy of the manual (with schematic) is available on http://www.ameritron.com/Downloads/index.php?productid=AL-811&filename=AL-811.pdf&company=ameritron . I would be cautious about operating this amplifier at 400 watts output in br...
by w9wi
Thu May 31, 2018 3:12 pm
Forum: Everything else
Topic: Tomato Soup Incident
Replies: 22
Views: 483

Re: Tomato Soup Incident

1. I wonder what the lab director said when he saw his vat of expensive demineralized water contaminated? :D 2. Touring a UHF TV transmitter... saw , in the middle of a few feet of insulating hose, a metal fixture with a wire attached. Seemed strange, as there was no other electrical connection. (at...
by w9wi
Thu May 24, 2018 4:24 pm
Forum: Everything else
Topic: Full Compass: online ordering issues?
Replies: 0
Views: 38

Full Compass: online ordering issues?

Anyone else having trouble with Full Compass' website? Twice this week I've tried to order something online & found the external credit card processing site never responds. I seem to have developed a bit of a sore throat at the Hamvention & was trying to avoid using my voice but it looks like that's...
by w9wi
Wed May 23, 2018 7:57 pm
Forum: FM Radio
Topic: Compression Question
Replies: 9
Views: 319

Re: Compression Question

Let me second that. We want it normalized, but would rather handle any further processing ourselves.
by w9wi
Sun May 13, 2018 6:35 pm
Forum: Everything else
Topic: Am I a possible engineer candidate?
Replies: 7
Views: 260

Re: Am I a possible engineer candidate?

Curt, so far you've heard from radio people. The situation in television is better, although I'm not going to say it's a bed of roses. - The money is better in TV. Not great, but better. I do suspect you're doing better in your current job. I will say, most folks I've run into trying to make the mov...