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Search found 324 matches

by k8jd
Mon Oct 26, 2020 10:43 pm
Forum: Engineering & DX'ing
Topic: Early Development Of AM BC DAs
Replies: 4
Views: 152

Re: Early Development Of AM BC DAs

I was born at the end of WW2 but remember seeing that two tower array on 8 mile rd whenever we went to Northland , the brand new shopping center !! Also recall seeing the two towers down off joy road before WXYZ moved to Southfield. AND recall when WJBK had TWELVE towers , raally big array down in L...
by k8jd
Mon Oct 26, 2020 10:33 pm
Forum: Engineering & DX'ing
Topic: Built some Hovermans
Replies: 2
Views: 60

Re: Built some Hovermans

Placing a reflector screen may really Lower the feedpoint Z ! I recall a multi element colinear ant that was slightly popular for 2 M SSB/AM/CW horiz polarized work. (It looked a lot like that Finco in the picture) Can't recall the catchy name they gave it. Don't think the Finco design needs a scree...
by k8jd
Wed Oct 21, 2020 1:08 pm
Forum: Engineering & DX'ing
Topic: Distant stations on local AMs
Replies: 5
Views: 201

Re: Distant stations on local AMs

WGVS has some pretty tight nulls in the pattern, so If you live east or west of the towers you may not have a lot of signal to block KOA.
I hear the signal from Cleveland (5 kW night) and rarely can hear KOA even with the radio's loopstick antenna turned end to try nulling out Cleveland.
by k8jd
Tue Oct 20, 2020 11:23 am
Forum: Engineering & DX'ing
Topic: Mini DXpedition 2020
Replies: 3
Views: 161

Re: Mini DXpedition 2020

When I was a teenager I got a 3 tube Granco tuner that I used with a xtal headset I rescued from the trash in school language lab. Made a dipole from TV twinlead and pinned it to my wall. Back in the early 60s , there was lots of open space on the FMBC band and the Wx front DX rolled in from Ohio, O...
by k8jd
Sun Oct 18, 2020 11:13 pm
Forum: Engineering & DX'ing
Topic: Solar Cycle 25 Is Upon Us
Replies: 7
Views: 265

Re: Solar Cycle 25 Is Upon Us

Having Fun on the HF Bands We still have some sporadic E-layer propagation , Managed to fill some log lines on 17, 15 and 12 M early this summer and looking forward to the December openings. Looks like I have 31 states worked on 12 M (24.1 MHz) Just started getting on there a few years ago. I have ...
by k8jd
Sun Oct 18, 2020 11:06 pm
Forum: Engineering & DX'ing
Topic: Mini DXpedition 2020
Replies: 3
Views: 161

Re: Mini DXpedition 2020

Have fun at your DX spot. I usually take my Tecsun portable for the SW and the big old GE superradio for AM DX.. We go to MI State Parks run campgrounds and the noise levels are getting pretty bad with terrible radiating power converters in the big campers. Some times I have to get away from the cam...
by k8jd
Thu Oct 15, 2020 5:20 pm
Forum: Engineering & DX'ing
Topic: The FCC Will Vote This Month on All-Digital AM
Replies: 15
Views: 677

Re: The FCC Will Vote This Month on All-Digital AM

Depends on how sensitive the front end of the new radios will be? Will the mnufacturers put all the engineering effort into the IBOC decoders and audio or make the RF part good ? or both , I imagine there will be good ones for the automobiles and a variety of price and function levels in the home or...
by k8jd
Wed Oct 14, 2020 7:41 pm
Forum: Engineering & DX'ing
Topic: The FCC Will Vote This Month on All-Digital AM
Replies: 15
Views: 677

Re: The FCC Will Vote This Month on All-Digital AM

Maybe some entrepeneur can collect all the old AM radios and sell them to the third world countries !
Tha stations will have to increase power. Digital TV ended up having less viewable coverage compared to the old NTSC version.
by k8jd
Sat Oct 10, 2020 1:48 pm
Forum: Engineering & DX'ing
Topic: Nice Map If This Link Works
Replies: 18
Views: 442

Re: Nice Map If This Link Works

Nice map ! Shows what I expected for W. and N. Lower MI but higher than I expected for my area in S.E. Lower MI !
by k8jd
Fri Oct 09, 2020 12:05 pm
Forum: Engineering & DX'ing
Topic: Sleeping Bear Dunes Bandscans (600+ mi.)
Replies: 9
Views: 237

Re: Sleeping Bear Dunes Bandscans (600+ mi.)

I have had some terriffic AM reception with my GE SuperRadio, it has a really large ferrite rod antenna about 8 inches long inside.
Heard American Samoa, Australia , East Asia, and West coast North Americal AMBC signals from Hawaii.
by k8jd
Thu Oct 08, 2020 10:26 am
Forum: Engineering & DX'ing
Topic: Sleeping Bear Dunes Bandscans (600+ mi.)
Replies: 9
Views: 237

Re: Sleeping Bear Dunes Bandscans (600+ mi.)

I guess the ground conducitvity on a sand due is so bad you can't hear ANY AM stations ? :shock:
by k8jd
Sun Oct 04, 2020 4:04 pm
Forum: Broadcasting - General
Topic: expanded hours
Replies: 5
Views: 794

Re: expanded hours

Detroit area has only a few daytimers I can think of,
WUFL 1030 in Mt Clemens Goes down at sunset, so we can listen to WBZ all night.
Any others ?
560 in Monroe switches to a very low power (16 Watts) transmitter in Royal oak/Oak Park, at sunset.... !
by k8jd
Sun Oct 04, 2020 3:44 pm
Forum: Engineering & DX'ing
Topic: Solar Cycle 25 Is Upon Us
Replies: 7
Views: 265

Re: Solar Cycle 25 Is Upon Us

Just put up more wire and get on in the night hours :D
I have had fun on 160, 80 and 60 M, making QSOs,
while the other ops are on line moaning about 20 M being flat !! :D :D :D
by k8jd
Sat Oct 03, 2020 12:13 pm
Forum: Engineering & DX'ing
Topic: Environment Canada to end weather radio.
Replies: 22
Views: 701

Re: Environment Canada to end weather radio.

3rd day of October, no signal at all on 162.475 here . Using outdoor co-linear ant about 25 ft AGL. 28.2 miles NorthWest of the RenCen, downtown Detroit. Propagation is pertty flat today so not hearing Sandusky or Mt Morlris either now.
by k8jd
Sat Sep 26, 2020 3:40 pm
Forum: Engineering & DX'ing
Topic: Scanners
Replies: 67
Views: 4183

Re: Scanners

I knew they used 470-512 in Chicago for a while but 700 MHz in really new to me. :(