Search found 139 matches

by Jim Sofonia
Wed Dec 04, 2019 6:28 am
Forum: TV Engineering
Topic: UHF Batwing recieve antenna
Replies: 4
Views: 231

Re: UHF Batwing recieve antenna

COMMENG wrote:
Tue Dec 03, 2019 8:39 pm
You might try this:

COMMENG
It looks like what I had in mind. Do you have a link to additional info and the freq. it covers?
by Jim Sofonia
Tue Dec 03, 2019 3:45 pm
Forum: TV Engineering
Topic: UHF Batwing recieve antenna
Replies: 4
Views: 231

UHF Batwing recieve antenna

I have UHF stations to the East, and others (mostly repeater stations) to the West. I'm thinking about building a batwing antenna that would be optimized for 470-608. Any ideas on this project? I would think the bi-directional would serve my location well. Where could I get plans for this?
by Jim Sofonia
Fri Nov 02, 2018 1:48 pm
Forum: AM Radio
Topic: RF Ammeter resistance
Replies: 15
Views: 901

Re: RF Ammeter resistance

I would recommend using a Delta TCT transformer and meter. No loss to your rf chain and more accurate.
by Jim Sofonia
Thu Aug 23, 2018 11:18 am
Forum: AM Radio
Topic: RCA BTA 250 M
Replies: 2
Views: 434

Re: RCA BTA 250 M

Check with Ed Trombley, Engineer - Ext 105 ET@Munn-Reese.com 517.278.7339 He has a lot of that stuff in his garage.
by Jim Sofonia
Mon Aug 13, 2018 3:57 pm
Forum: Everything else
Topic: WWV WWVH
Replies: 16
Views: 1145

Re: WWV WWVH

Antiquated technology now very obsolete. I used to use the service 60 years ago as a short wave listener but that is long gone. The signal is lousy in many parts of the country. The last try at using the service was the WWV "atomic" clocks that Brookstone used to sell 20 years ago, and they never wo...
by Jim Sofonia
Wed Jul 25, 2018 11:27 am
Forum: Everything else
Topic: WKRP
Replies: 16
Views: 939

Re: WKRP

Thanks Mark, you're a good man. Is the tower still there?
by Jim Sofonia
Wed Jul 25, 2018 11:12 am
Forum: Everything else
Topic: WKRP
Replies: 16
Views: 939

WKRP

Kinda trivia question I don't know the answer. Does anyone know whose antenna shows up briefly in the opening credits of WKRP? We have been getting MeTv on our cable lineup earlier this year. I never saw this show in it's original run, so I'm loving it as a new series for me.
by Jim Sofonia
Sat Jun 02, 2018 7:16 pm
Forum: Everything else
Topic: Name that mic
Replies: 5
Views: 475

Re: Name that mic

EV 635. Easy question. Got something harder? You are correct. I had to start somewhere to get the flow going. Anybody else jump in here with your favorite mic in use, not a static photo from a catalog etc. Thanks. As for the 635, we took them off the air a few years ago, but they are the only mic t...
by Jim Sofonia
Sat Jun 02, 2018 6:22 pm
Forum: Everything else
Topic: Name that mic
Replies: 5
Views: 475

Name that mic

Just for fun I thought we could post pictures of mic's IN USE and see who knows them.
I'll start with Linda Ronstadt from about 1970.
lr 19703.jpg
Full video: https://www.youtube.com/watch?v=A0qm8nq8RcA
Everyone else you are invited to post your favorite mic in actual use.
by Jim Sofonia
Wed May 30, 2018 3:21 pm
Forum: Everything else
Topic: Tomato Soup Incident
Replies: 22
Views: 1676

Re: Tomato Soup Incident

The key fob may have a hidden screw under a label on it that would let you in.
by Jim Sofonia
Thu May 24, 2018 12:45 pm
Forum: FM Radio
Topic: Compression Question
Replies: 9
Views: 613

Re: Compression Question

I had a friend who used to work for the JCOR group. He tells me the owner of the group wanted the modulations up higher and would buy a steak dinner for any engineer that gets a violation from the FCC!
by Jim Sofonia
Wed May 23, 2018 5:18 pm
Forum: Everything else
Topic: Tomato Soup Incident
Replies: 22
Views: 1676

Re: Tomato Soup Incident

Thanks for the high tech info. My wife said to do the plate thingy too.
by Jim Sofonia
Wed May 23, 2018 3:07 pm
Forum: Everything else
Topic: Tomato Soup Incident
Replies: 22
Views: 1676

Tomato Soup Incident

While carrying a very hot cup of Tomato Soup I got a little splashed, very hot hurt my hands, lost balance and fell onto my tv tray cart. I broke the tray and the soup went everywhere, including into my Bluetooth speaker. It was dead, won't turn for more than 1sec. So I took it apart and scrubbed th...
by Jim Sofonia
Wed May 16, 2018 8:42 pm
Forum: Ask the Engineers
Topic: C-band TI
Replies: 21
Views: 1021

Re: C-band TI

I had forgotten about the old SA and whatever the other SEDAT RX was. I have a station with at least one of those down converters still hanging on the wall. I think the other system was the Fairchild Sedat system. It was alot similar to the SA 9000right down to size and changeable receive modules. ...
by Jim Sofonia
Wed May 16, 2018 8:30 pm
Forum: Ask the Engineers
Topic: C-band TI
Replies: 21
Views: 1021

Re: C-band TI

I had forgotten about the old SA and whatever the other SEDAT RX was. I have a station with at least one of those down converters still hanging on the wall. I think the other system was the Fairchild Sedat system. It was alot similar to the SA 9000right down to size and changeable receive modules. ...