Search found 65 matches

by Ray
Tue Jan 01, 2019 7:34 am
Forum: Ask the Engineers
Topic: Timed Capture of Measurement on Anritsu MS2721A/B
Replies: 7
Views: 255

Re: Timed Capture of Measurement on Anritsu MS2721A/B

I hope everyone is having a great New Years, I've had good luck using a DATAQ DI-1120 external 14 bit A/D converter (<$200) to capture long-term data from some older SAs. If the SA has an external X and Y axis output ports, you can just record the data on a couple of the available four channels. The...
by Ray
Thu Dec 20, 2018 7:56 am
Forum: FM Radio
Topic: PC Software for Audio Processor for FM translator ?
Replies: 10
Views: 364

Re: PC Software for Audio Processor for FM translator ?

I have had very good luck with HP Z400 workstations used for both on-air and production. You can get them with loaded with Windows 7 and >8 GB RAM often for <$200. I probably have about eight of them now. They are very well made (much better than consumer grade) and very stable. Corporations used th...
by Ray
Tue Dec 18, 2018 3:11 pm
Forum: FM Radio
Topic: PC Software for Audio Processor for FM translator ?
Replies: 10
Views: 364

Re: PC Software for Audio Processor for FM translator ?

Several folks really like Stereo Tool. The author has had displays at NAB a few times. Cost is very reasonable.
I think Orban and Telos also have software versions

https://www.stereotool.com/

Ray
by Ray
Mon Dec 17, 2018 7:30 am
Forum: FM Radio
Topic: High Reflected Power Puzzle
Replies: 33
Views: 1188

Re: High Reflected Power Puzzle

I've found the customer service at Broadcast Concepts to be first class. I was also thinking of making a second backup amplifier (emergency use only) using one of their Pallet Amplifier since I have everything else I need (PS, LPF, enclosure etc).. I'm worried about possible FCC inspection if I was ...
by Ray
Fri Dec 14, 2018 7:48 am
Forum: FM Radio
Topic: High Reflected Power Puzzle
Replies: 33
Views: 1188

Re: High Reflected Power Puzzle

If the PA is oscillating at 90 MHz with a high output, I would take the transmitter out of service immediately. If any other spurs are present (especially in the aviation band), this could really turn into a problem with the FCC. I remember (don't have the regs with me now) the required FCC harmonic...
by Ray
Wed Dec 12, 2018 7:34 am
Forum: FM Radio
Topic: High Reflected Power Puzzle
Replies: 33
Views: 1188

Re: High Reflected Power Puzzle

I was thinking you had the BKG77 slant vee dipole design which is much more broadband (entire band). I use it as a standby antenna. I also have a BKG88 in storage, I only want to use it as a last resort because of the narrow bandwidth. If you get ice/snow on the antenna it will detune. There are som...
by Ray
Tue Dec 11, 2018 7:01 am
Forum: FM Radio
Topic: High Reflected Power Puzzle
Replies: 33
Views: 1188

Re: High Reflected Power Puzzle

Problems like this can drive you crazy. I'd check the integrity of the FSJ4 Type N connectors installation. Pull on them and see if they come off. If the cable is not trimmed carefully the connectors will not make good contact and will be intermittent. I use the cable prep tool (the one you use with...
by Ray
Wed Dec 05, 2018 7:24 am
Forum: FM Radio
Topic: Horizontal or vertical
Replies: 8
Views: 585

Re: Horizontal or vertical

I've seen several translators that use a linear pol Yagi oriented for slant 45 deg pol.
You don't get the fading benefits of a CP antenna, but I suppose you can double your power if you are licensed for both vertical and horizontal pols (1/2 vertical and 1/2 horizontal).

Ray
by Ray
Mon Nov 26, 2018 7:22 am
Forum: FM Radio
Topic: ERI COG-1084 question
Replies: 8
Views: 441

Re: ERI COG-1084 question

I've designed many similar high power UHF/VHF antennas, just not for FM broadcast. Over a design bandwidth, there is a spacing compromise between the dipole-reflector and also the overall size of the entire array. Often the panel has higher directivity at the higher frequencies resulting in less uni...
by Ray
Tue Oct 23, 2018 2:18 pm
Forum: Radio Automation Systems
Topic: Suppressing Windows 10 Update and Forced Reboots
Replies: 17
Views: 787

Re: Suppressing Windows 10 Update and Forced Reboots

I just had the same issue for a new server that I use during my day job. It is a large computer used for simulations that usually take over a week to complete. The server was always re-booting before a simulation would finish. We were able to disable the automatic updates last week. The OS is Window...
by Ray
Tue Oct 02, 2018 9:14 am
Forum: Radio Studio Engineering
Topic: WVRC-8 Plus Site Control Setup Configuration Questions
Replies: 2
Views: 742

Re: WVRC-8 Plus Site Control Setup Configuration Questions

Thanks for the good advice on SMTP email Kevin. SMTP email works great. It is possible for me to spend hours on an issue like the email provider not working trying all kinds of settings. It is nice to have this message board to help resolve problems like this in a few minutes and not hours. Ben at b...
by Ray
Sat Aug 25, 2018 3:01 pm
Forum: Radio Studio Engineering
Topic: WVRC-8 Plus Site Control Setup Configuration Questions
Replies: 2
Views: 742

WVRC-8 Plus Site Control Setup Configuration Questions

1) Is it possible to change the relay state via the telephone dail-in with the relay output latch option (not pulse)? I can select either pulse or latch via the web interface but it seems that the telephone only has "pulse" support for the relay drive state? 2) Does the WVRC-8 plus version support S...
by Ray
Mon Jul 16, 2018 6:23 am
Forum: FM Radio
Topic: Remote Control Recommendcations
Replies: 13
Views: 660

Re: Remote Control Recommendcations

I was evaluating the same thing about 6 months ago. I was trying to decide between the Circuit Werks and WVRC-8. Found a used WVRC-8 on ebay that I sent back to Broadcast Tools to convert to the plus model. The on-site upgrade kit is $100 and they will upgrade it at the factory for $150. I've been v...
by Ray
Wed May 16, 2018 6:50 am
Forum: Ask the Engineers
Topic: C-band TI
Replies: 21
Views: 751

Re: C-band TI

The usual C-band radar band is 5.4-5.9 GHz. Many use up to 1.5 MW peak power. You might could do a quick site RF survey with a SA and a standard gain horn (with a LNA). If it is in-band, you may have to even install a diffraction fence. We had to do this last month for a new uplink station we own. I...
by Ray
Sun Apr 29, 2018 12:13 pm
Forum: Radio Studio Engineering
Topic: Software to control Broadcast Tools 8x2 Audio Switcher
Replies: 8
Views: 1014

Re: Software to control Broadcast Tools 8x2 Audio Switcher

I've used a few of these with good results. Never had a failure. I didn't know about the software (thanks for the info) , but the RS232 interface is easy to program. They had a model 44.22 version that was discontinued recently. This version has four AES digital inputs and four analog inputs that yo...