Search found 310 matches

by grich
Tue Nov 21, 2017 12:58 pm
Forum: Ask the Engineers
Topic: BVH-2000 guide retraction
Replies: 7
Views: 122

Re: BVH-2000 guide retraction

DUH....BVH, not BVU! Yeah, 1" makes a difference. :oops:

I'll shut up and slink into the corner again...

Never had the pleasure of Sony 1". We were an Ampex house...VPR2's.
by grich
Tue Nov 21, 2017 11:49 am
Forum: Ask the Engineers
Topic: BVH-2000 guide retraction
Replies: 7
Views: 122

Re: BVH-2000 guide retraction

What you're after, Sony calls the threading motor, and there are no belts involved: it's a gearmotor assembly that slowly spins a metal wheel with an offset pin that pulls the guide linkage out and pushes it back... Why the heck didn't Panasonic think of that? Replacing the threading drive belt in ...
by grich
Tue Nov 21, 2017 11:43 am
Forum: Everything else
Topic: IPAWS outage?
Replies: 4
Views: 53

Re: IPAWS outage?

Yep...server problem at the mother ship. Glad nothing bad happened during that time. :roll:
by grich
Mon Nov 20, 2017 11:17 am
Forum: Ask the Engineers
Topic: BVH-2000 guide retraction
Replies: 7
Views: 122

Re: BVH-2000 guide retraction

Check for slipping belts. Any VTR these days is going to be suspect for cracked or deteriorated rubber parts.

Common on the old MII decks we had...it would get to the point where the pinch roller would try to snap in place, but the belt would slip until it timed out and unthreaded.

Gregg
by grich
Fri Nov 17, 2017 10:58 am
Forum: STL Engineering
Topic: Women Hearing Distorsion on Station After STL realign
Replies: 19
Views: 472

Re: Women Hearing Distorsion on Station After STL realign

And as I alluded to in the other thread, make sure the transmit and receive antennas are aligned to the same polarity, or that's going to knock down your signal 20-25dB even with everything else perfect.

And peak BOTH dishes.
by grich
Wed Nov 15, 2017 12:18 pm
Forum: STL Engineering
Topic: Aligned our STL this morning. Opinions?
Replies: 8
Views: 307

Re: Aligned our STL this morning. Opinions?

10 mile hop I assume you had both dishes peaked for maximum signal. 26dBu is better than 10, but you should have better performance on a 10-mile hop. When the dish at the new studio was installed, is there a chance it was installed in the wrong polarity? Also make sure you're not peaked on a side l...
by grich
Wed Nov 15, 2017 12:12 pm
Forum: STL Engineering
Topic: Aligned our STL this morning. Opinions?
Replies: 8
Views: 307

Re: Aligned our STL this morning. Opinions?

kkiddkkidd wrote:
Tue Nov 14, 2017 10:02 am
KPJL FM wrote:
Tue Nov 14, 2017 8:18 am
Looks like it's less than a 20 inch hop! :lol:
Now that's funny right there...
I had to jump back to the picture in the previous post a couple times before I realized the picture above is a split-screen of both ends of the system. :)
by grich
Tue Nov 07, 2017 3:28 pm
Forum: Ask the Engineers
Topic: Offical AMC 8 Transition Thread (was Sat. AMC-8)
Replies: 152
Views: 10201

Re: Offical AMC 8 Transition Thread (was Sat. AMC-8)

Just got word from NBC that AMC18 transponder 4C will be transitioned to SES11 on November 28 at 3:20am ET. I would expect the radio networks will move around the same time.
by grich
Mon Oct 30, 2017 10:52 am
Forum: FM Radio
Topic: Nautel NV20 repair/restoration
Replies: 17
Views: 1204

Re: Nautel NV20 repair/restoration

davek wrote:
Mon Oct 30, 2017 5:49 am
...Connectors were additionally cleaned with IPA. ...
Is that IsoPropyl Alcohol, or India Pale Ale? :D

Great work! Love the detail, just as with your posts on the Harris Z power supply mods.

Are you intending for this box to be used as a main TX or a backup?
by grich
Mon Aug 14, 2017 2:48 pm
Forum: AM Radio
Topic: DX-10 Controller Probs
Replies: 9
Views: 701

Re: DX-10 Controller Probs

I know nothing of the DX series but I had step-start issues (as I suspect many did...there was a bulletin about it) with their SX boxes when the aux contacts on the contactors got cruddy and would not report closure to the controller.
by grich
Mon Aug 14, 2017 2:44 pm
Forum: AM Radio
Topic: DX-10 Controller Probs
Replies: 9
Views: 701

Re: DX-10 Controller Probs

I didn't think it was that old either....but there's this: https://www.desmoinesbroadcasting.com/kioa/harris-dx10.html Says the prototype went on air in September 1987, or very nearly 30 years ago. Back to the topic, I assume you have checked all PS voltages and shaken the big blue caps to see if t...
by grich
Tue Aug 01, 2017 11:35 am
Forum: FM Radio
Topic: EAS Antenna Issue
Replies: 13
Views: 999

Re: EAS Antenna Issue

Wow. I don't know if you'll find one. With Samco's five-element yagi, at 45 degrees the gain is only 1.5 dB below the level at the peak of the main lobe.

Might need a tight filter.
by grich
Thu Jul 13, 2017 12:51 pm
Forum: Ask the Engineers
Topic: Offical AMC 8 Transition Thread (was Sat. AMC-8)
Replies: 152
Views: 10201

Re: Offical AMC 8 Transition Thread (was Sat. AMC-8)

...Then WW1 started pressuring affiliates to get back on a satellite feed because their servers couldn't handle all the stations running off internet feeds... I was figuring that would happen. :roll: I guess if I were a jerk at WW1, I would compile a list of receivers that were a-never tuned to AMC...
by grich
Wed Jun 28, 2017 3:01 pm
Forum: AM Radio
Topic: Daytime Impedance high?
Replies: 26
Views: 2061

Re: Daytime Impedance high?

Hopefully the original problem doesn't become moot as a tornadic thunderstorm threatens the KMA tower site here in the next few minutes...
by grich
Mon Jun 19, 2017 10:34 am
Forum: AM Radio
Topic: RFI-Resistant USB Audio Interface
Replies: 6
Views: 596

Re: RFI-Resistant USB Audio Interface

Good place for a 111C repeat coil. Ground the electrostatic shield terminal. Lots of terminal space to solder in the MOV's.