Posted by RayP(MI) on December 03, 2008 at 15:11:50 from (207.241.137.116):
A ham operator friend contacted the ARRL (Amateur Radio Relay League) regarding the new digital TV. His question had to do with interference to the new broadcasting mode by ham radio equipment. The following is their response. First time I have been able to get a handle on frequencies. Apparently they are not all being moved into the UHF spectrum. This means you will still be using conventional broad band antennas like we are now using. Don't know why the media has been so closed mouthed about this. Maybe they're too dumb to know the information, and too lazy to go looking for it. Or don't think it is important!
From the ARRL:
"The new digital TV channels are still 6 MHz wide. Furthermore, the frequency allocations from Channel 2 to 51 will also remain the same. The frequency spectrum from Channel 52 and up will be reallocated for other uses.
With DTV, it tends to be an all or nothing scenario. This means that interference will not be noticeable up to a certain threshold. Beyond the threshold, the interference will prevent reception of the entire signal.
With regard to testing, most cases of interference to television from the Amateur Radio Service are primarily caused by fundamental overload. In this situation, the TV receiver improperly responds to a strong signal outside its intended band pass. The interference from an HF station can be cured in most cases using common mode chokes and a brute force ac line filter. This should be equally true with DTV. "
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
