Search found 827 matches

by TPT
Wed Mar 20, 2019 6:03 am
Forum: TV Engineering
Topic: Cheap Chyron
Replies: 4
Views: 114

Re: Cheap Chyron

Older switcher, don't know the model.
by TPT
Tue Mar 19, 2019 8:32 am
Forum: TV Engineering
Topic: Cheap Chyron
Replies: 4
Views: 114

Cheap Chyron

Last time I worked in TV we worked with a high band Ampex 1000--which finally got pulled to create space for an Ampex cart player (ACR-25?) I take care of a college radio station, just got off a call with the prof. who teaches radio/tv production. Her "Chyron" in their TV production studio died, rep...
by TPT
Sat Mar 16, 2019 4:43 pm
Forum: Radio Automation Systems
Topic: Suppressing Windows 10 Update and Forced Reboots
Replies: 24
Views: 968

Re: Suppressing Windows 10 Update and Forced Reboots

Isolating an air machine from the internet would be the simple solution. However, we have two studios 20 miles apart, --and my ops manager is in Denver. Need remote access.
by TPT
Sat Mar 09, 2019 5:10 pm
Forum: AM Radio
Topic: AM Translators
Replies: 10
Views: 262

Re: AM Translators

As long as the translator 60 dbu stays inside the 25 mile circle from the AM transmitter, cutting back from 50 kw to 250 watts would not make any difference --even if the translator's 60 dbu now extends outside the AM station's reduced 2 mv/m.
by TPT
Sat Mar 09, 2019 6:23 am
Forum: AM Radio
Topic: AM Translators
Replies: 10
Views: 262

Re: AM Translators

over 1600 meters AHAAT (or 5300 feet) for 54 km. But that's not the point. The rule on translator location is the GREATER of 25 miles or the 2 mv/m contour. So if your 2 mv goes out 54 kilometers (33 miles) you could put a translator in a town 26 miles out with a 6 mile 60 dbu contour. At 250 watts,...
by TPT
Fri Mar 08, 2019 3:32 pm
Forum: AM Radio
Topic: AM Translators
Replies: 10
Views: 262

Re: AM Translators

We had an 11 day power outage in 2012 when a "derecho" came through Now let's suppose the AM is without power, but the translator is on because it is in the same tower as a TV station with back-up power. I suspect the Commission would not fuss if you kept programming that translator. If the AM trans...
by TPT
Fri Mar 08, 2019 11:58 am
Forum: AM Radio
Topic: AM Translators
Replies: 10
Views: 262

Re: AM Translators

Let's start with Section 74.1231 which permits a translator for a daytimer to stay on when the AM station is off: (h) An FM translator station that rebroadcasts a Class D AM radio broadcast station as its primary station may originate programming during the hours the primary station is not operating...
by TPT
Wed Mar 06, 2019 1:01 pm
Forum: Radio Automation Systems
Topic: STORQ Users--Look at the new Storq 2
Replies: 12
Views: 1191

Re: STORQ Users--Downgrade coming

I kept Simian in line for both our stations. We carry Delilah on one station in the evenings, and another show--Mike Harvey--on the weekends. On the other station we take an internet feed for a morning show (off a Barix) and Alice Cooper at night off satellite. As well as Steelers during football. L...
by TPT
Tue Mar 05, 2019 3:40 pm
Forum: Everything else
Topic: Making a case for factoring malicious use of potent energy
Replies: 10
Views: 424

Re: Making a case for factoring malicious use of potent energy

Some suspicion that the effects noted by US diplomats in Havana ( headaches, blurred vision) might have been the result of relatively high-powered microwave energy aimed at their building. It is possible to listen to conversations by aiming microwave carriers at windows, then detecting the minute am...
by TPT
Tue Mar 05, 2019 7:23 am
Forum: Ask the Engineers
Topic: Remote Start AEQ BC 500 - Automation
Replies: 10
Views: 288

Re: Remote Start AEQ BC 500 - Automation

The simple solution may be a small plastic box with a push button. We have the new STORQ combo sat receivers/automation system for WW One programming. A simple contact closure is needed to start the programming back up after a local break. Normally our Simian automation commands this with an externa...
by TPT
Tue Mar 05, 2019 7:12 am
Forum: FM Radio
Topic: Very low power recommendation
Replies: 19
Views: 459

Re: Very low power recommendation

I have a Bird 25 watt attenuator. Use it with a BE STX kilowatt--the built in exciter is not reliable, so I run about 5 watts through the attenuator from an Armstrong exciter to get the 250 milliwatts needed to drive the transmitter. Luckily BE has BNC's in and out to allow this. Back to the origina...
by TPT
Sun Mar 03, 2019 7:10 pm
Forum: FM Radio
Topic: Very low power recommendation
Replies: 19
Views: 459

Re: Very low power recommendation

That's another issue. If this is a true "Class D" then anything with an FCC registration number is acceptable. Station, of course, still responsible for out of band emissions. I have a Class D at the local college I take care of--uses an MX-15 followed by a "scuba tank" sized band pass filter. We ha...
by TPT
Sun Mar 03, 2019 6:48 pm
Forum: FM Radio
Topic: Very low power recommendation
Replies: 19
Views: 459

Re: Very low power recommendation

Had an older Bext on a translator, generally trouble free, but would get finicky if the frequency changed (thumbwheel on front--didn't necessarily land where you thought it would). A lot of the Bext products are RVR's, same with Armstrong. Have an Armstrong 30 watt I use on a backup transmitter, wor...
by TPT
Sun Mar 03, 2019 6:20 pm
Forum: FM Radio
Topic: Very low power recommendation
Replies: 19
Views: 459

Re: Very low power recommendation

Both the FX-50 and the similar Continental products (802 A and B) while good exciters,, are not really happy running at very low power. They use Darlingtons for power control--essentially like a variable power divider. At 40~50 watts they are quite happy, at 10 watts they are dissipating a lot of po...
by TPT
Thu Jan 24, 2019 7:40 am
Forum: FM Radio
Topic: HT-10 APC issues
Replies: 12
Views: 691

Re: HT-10 APC issues

Believe most of those IPA's in the HT-10 are repairable by Silicon Valley Amplifier--if you are prepared to wait. Took almost a year to get one fixed for a transmitter I have to deal with. While it was out we drove the transmitter with a Nautel V-1 (not VS series). Match was touchy, but we were able...