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Search found 308 matches

by k8jd
Wed Sep 23, 2020 12:22 pm
Forum: Engineering & DX'ing
Topic: Virtual endec
Replies: 7
Views: 211

Re: Virtual endec

OK It's the EANS, Emergency Action Notification system.....That must be the modernized version of "CONELRAD" .
The last station I worked at had a few extra relays in the standby AM transmitter, left over from when they switched to 1240 KHz for an Atomic War warning. :shock: :shock:
by k8jd
Mon Sep 21, 2020 11:16 am
Forum: Engineering & DX'ing
Topic: Virtual endec
Replies: 7
Views: 211

Re: Virtual endec

So , what, exactly, is an ENCED or EAS ?
I am wary of home automation with any RF likks that could be compromised or "hacked" by outside actors.
And, how does this tie in with the Subject "Brodcasting"
by k8jd
Sat Sep 19, 2020 12:44 pm
Forum: Engineering & DX'ing
Topic: AM Daytime And CH NW Straits Area Of Michigan
Replies: 7
Views: 241

Re: AM Daytime And CH NW Straits Area Of Michigan

The closer you get to Lake Michigan, the more the Wisconsin stations on 910 (WDOR) and 950 (WCLB) interfere with WFDF and WWJ. WDOR and WFDF were nearly synched before WFDF moved and went 50 kW. Now, WFDF is about a 3-4 Hz different carrier frequency than WDOR. When WDOR reduces to 102 watts, and W...
by k8jd
Sat Sep 19, 2020 12:40 pm
Forum: Engineering & DX'ing
Topic: AM Daytime And CH NW Straits Area Of Michigan
Replies: 7
Views: 241

Re: AM Daytime And CH NW Straits Area Of Michigan

Interesting list. Not surprised by WFDF 910 and WWJ 950 from the Detroit Area, those 2 stations have a direct north signal at 50 kw daytime ... Interesting that WJR 760, Detroit with 50 kW of transmitter power 24/7 and a non-directional antenna has a more useful received field in the above list cat...
by k8jd
Fri Sep 18, 2020 12:19 pm
Forum: Broadcasting - General
Topic: Towers? We Don't Need No Stinking Towers
Replies: 16
Views: 1337

Re: Towers? We Don't Need No Stinking Towers

I love towers, every time one of the local AM stations went to 50 KW and had to relocate and put up big directional arrays, I had to drive to the site and check it out :D Just don't build near my house, I like to have interference free Short wave operating here :D :D
by k8jd
Fri Sep 18, 2020 12:13 pm
Forum: Broadcasting - General
Topic: Formats during the pandemic
Replies: 2
Views: 105

Re: Formats during the pandemic

I liked it when "oldies " stations played music I grew up with, now they are playing last year's hip hop and other crap I never heard of :(
by k8jd
Fri Sep 18, 2020 12:11 pm
Forum: Engineering & DX'ing
Topic: Environment Canada to end weather radio.
Replies: 15
Views: 460

Re: Environment Canada to end weather radio.

The WX service from Canada that I hear is in Sarnia on 162.475, I have to be on the outside antenna to hear that.
Wonder if they are gone, have to check it now.
by k8jd
Wed Sep 16, 2020 3:13 pm
Forum: Engineering & DX'ing
Topic: Environment Canada to end weather radio.
Replies: 15
Views: 460

Re: Environment Canada to end weather radio.

The AM station (CJSP) in Leamington was a favorite of mine when I was a teen. It was quite strong in Livonia !
They switched to FM many years ago, now it's on a fairly low power FM signal and I can NOT hear it any more...At all !
by k8jd
Wed Sep 16, 2020 3:10 pm
Forum: Engineering & DX'ing
Topic: Fires Threaten Mt. Wilson Radio TV Microwave Towers And Observatory
Replies: 2
Views: 136

Re: Fires Threaten Mt. Wilson Radio TV Microwave Towers And Observatory

Maybe KNX has an FM side and that would be a good place for it. I will have to look that up.
AM transmittrers would not work well on a mountain top for local coverage.
I would worry about deposits on the telescope mirrors from the smoke !!!
by k8jd
Tue Sep 15, 2020 6:44 pm
Forum: Engineering & DX'ing
Topic: Environment Canada to end weather radio.
Replies: 15
Views: 460

Re: Environment Canada to end weather radio.

I think this is a serious mistake. At the same time, radio has even become unreliable at night and on weekends. Sure , not sure about weekends but Canada has been shutting down the big 50,000 W am giants and moving that programming to lower power FM stations in Urban areas. M U C H less coverage ar...
by k8jd
Tue Sep 15, 2020 6:39 pm
Forum: Engineering & DX'ing
Topic: Environment Canada to end weather radio.
Replies: 15
Views: 460

Re: Environment Canada to end weather radio.

Much of Cananda is wilderness , forest and Tundra. you may not get any Broadcast or Cellfone service over vast areas. I guess they expect EVERYONE to live in cities.
There are native people in those forests and vacationers who wanted to get away. NO WX service or broadcasts to hear there.
by k8jd
Fri Sep 04, 2020 12:22 pm
Forum: Engineering & DX'ing
Topic: DX late morning (9/3/20)
Replies: 4
Views: 238

Re: DX late morning (9/3/20)

Good strong WX front probably ducting the signals then.
by k8jd
Thu Aug 27, 2020 2:39 pm
Forum: Engineering & DX'ing
Topic: VHF DX From A Mist From The Smoke Of A Distant Fire
Replies: 7
Views: 279

Re: VHF DX From A Mist From The Smoke Of A Distant Fire

It just may be possible for the smoke particles to start water condensing around them and forming some kind of refractive layer or ducting for VHF and uHF RF signals to go out unusual distances.
by k8jd
Wed Aug 26, 2020 12:38 pm
Forum: Engineering & DX'ing
Topic: AM reception question
Replies: 37
Views: 1411

Re: AM reception question

We know that a light bulb does radiate, Unfortunately we've just missed the annual "Light Bulb QSO Party" this past weekend (8/22-23), the purpose of which is to build and use an antenna constructed with a lightbulb as a key component ... and to promote understanding and practical application of an...
by k8jd
Wed Aug 26, 2020 12:32 pm
Forum: Engineering & DX'ing
Topic: AM reception question
Replies: 37
Views: 1411

Re: AM reception question

...the variable capacitor in the VFO....had a physical "governor" that prevented the VFO from operating out of band. I guess a suitable lesser capacitance variable capacitor wasn't available. I'm guessing the variable cap's physical range was mechanically limited so that only the most linear part o...