Search found 990 matches

by TPT
Sun May 03, 2020 5:46 pm
Forum: Ask the Engineers
Topic: sat look angle calculator
Replies: 3
Views: 264

sat look angle calculator

There used to be a good one on-line I can't find anymore. Used google maps, had the right satellites for North America, and showed the direction on the map. Need to see if we can get SES-11 at our one studio site--may be adding a station & plan using some satellite fed programming. Site wouldn't...
by TPT
Tue Apr 28, 2020 5:35 am
Forum: Radio Automation Systems
Topic: simple-free or low cost
Replies: 8
Views: 2725

simple-free or low cost

Looking for simple music player--takes a list, plays cuts randomly, & can insert ID's, liners every so often. For a low power.
Tried Station Playlist, but would cost $400 for anything that would work. Tried Zara, but kept stopping...has to be able to run unattended.
Suggestions?
by TPT
Mon Apr 27, 2020 5:56 am
Forum: FM Radio
Topic: Suggestions for FM Tuner
Replies: 9
Views: 755

Re: Suggestions for FM Tuner

Dayton made a 1 ru composite receiver. Good luck finding one, though.
by TPT
Sat Apr 25, 2020 9:39 am
Forum: FM Radio
Topic: Suggestions for FM Tuner
Replies: 9
Views: 755

Re: Suggestions for FM Tuner

For a tuner with a clean enough composite output you are probably looking at the Inovonics composite receiver. Unless you can find a used one, probably in the range of $1,600. For around a grand you can buy a used Inovonics modulation monitor which would allow off-air measurement from Bay Country. L...
by TPT
Thu Apr 23, 2020 1:18 pm
Forum: FM Radio
Topic: Digit or Digit-CD full manuals
Replies: 28
Views: 1597

Re: Digit or Digit-CD full manuals

I would plan on recapping even if you find a slow or dead fan.
by TPT
Wed Apr 22, 2020 2:22 pm
Forum: FM Radio
Topic: Harris THE-1 stereo Pilot issue
Replies: 8
Views: 568

Re: Harris THE-1 stereo Pilot issue

Sorry--THE-1---uses the same cards as an MX-15 for AFC, etc. Different power amp.
by TPT
Wed Apr 22, 2020 2:22 pm
Forum: FM Radio
Topic: Harris THE-1 stereo Pilot issue
Replies: 8
Views: 568

Re: Harris THE-1 stereo Pilot issue

Of the top of my head, I believe there is nothing in the MX-15 that would interfere or eliminate the stereo pilot. Suspect the place to check is with the audio processor, to see if it may be switched to mono.
by TPT
Wed Apr 22, 2020 7:06 am
Forum: Radio Studio Engineering
Topic: pin-out Marti SR10-E receiver
Replies: 3
Views: 436

Re: pin-out Marti SR10-E receiver

Thanks. Manuals used to be on the BE site, but can't find them now.
by TPT
Tue Apr 21, 2020 1:06 pm
Forum: Radio Studio Engineering
Topic: pin-out Marti SR10-E receiver
Replies: 3
Views: 436

pin-out Marti SR10-E receiver

This is the digitally synthesized model, rack mount, speaker right side, three buttons below channel readout. 15 pin "D" on the back.

Haven't been able to find a manual on-line. Need the pin-outs on the "D-Sub" connector so I can slave an RPT-30 transmitter to it.
by TPT
Mon Apr 20, 2020 6:00 am
Forum: FM Radio
Topic: Digit or Digit-CD full manuals
Replies: 28
Views: 1597

Re: Digit or Digit-CD full manuals

AFC in the MS-15, a re-design in the MX supposedly cured this. Known as the Axel F. phenomenon. From the Axel Foley theme from Beverly Hills Cop:
doop-doopduh duh duh duh DOOOOOP! Hissssssss (very low frequency synthesizer note).
by TPT
Wed Apr 15, 2020 1:14 pm
Forum: AM Radio
Topic: Tower replacement for Two combined NON-D AM's
Replies: 14
Views: 916

Re: Tower replacement for Two combined NON-D AM's

1/4 wavelength at 1400 is 175 feet; 1/4 at 780 is 315 feet
by TPT
Wed Apr 15, 2020 1:06 pm
Forum: AM Radio
Topic: Tower replacement for Two combined NON-D AM's
Replies: 14
Views: 916

Re: Tower replacement for Two combined NON-D AM's

FM translator: Not necessarily. The translator's 60 dbu has to fit inside the greater of the 2 mv/m contour or a 25 mile circle from the AM transmitter site. For example: 1. Class C on 1450, the station acquired a translator that they had to move off-site. New site is 17 miles from the AM transmitte...
by TPT
Thu Apr 02, 2020 10:14 am
Forum: FM Radio
Topic: OMB Exciter EM 50
Replies: 10
Views: 730

Re: OMB Exciter EM 50

Radio Dan (Radiodan.com) and RF Parts (RFParts.com) have used dummy loads at reasonable prices--e.g. Decibel Products 100 watt for $95.

Always handy to have on hand.
by TPT
Thu Apr 02, 2020 10:10 am
Forum: FM Radio
Topic: Harris HT5 IPA replacement
Replies: 12
Views: 699

Re: Harris HT5 IPA replacement

If you can get a good match to the final, look at a Nautel VS300. It will operate as low as 50 watts comfortably, yet should be enough drive to make your licensed TPO.
by TPT
Fri Feb 28, 2020 7:54 am
Forum: FM Radio
Topic: Collins 831G schematic
Replies: 14
Views: 798

Re: Collins 831G schematic

Which we (Fireman No, 1 and me, Fireman No. 2) have been urging them to do--(convert to 50 ohm input, that is). Then get a solid state kilowatt transmitter to drive the final (believe about 600 watts drive is needed). Which could then be used as a back-up when something else breaks. The two small op...