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Search found 608 matches

by k8jd
Wed Dec 21, 2022 10:52 am
Forum: Engineering & DX'ing
Topic: DX 370
Replies: 11
Views: 1225

Re: DX 370

Yes that's it !
by k8jd
Sun Dec 18, 2022 9:41 pm
Forum: Engineering & DX'ing
Topic: WQFG689 heard
Replies: 1
Views: 671

WQFG689 heard

Listening to 1710 kHz, repeating message about tech difficuleits, From Hudson County NJ. Usualy those community traffic alert stations are 10 Watts or less, Strong in Suburban Detroit !!
by k8jd
Sun Dec 18, 2022 9:13 pm
Forum: Engineering & DX'ing
Topic: DX 370
Replies: 11
Views: 1225

Re: DX 370

I had a desktop RadioShack SW rcvr for a long time. It was a DX3something. It had the digi display and was pretty good on SSB/CW and sounded good on AM for SW band BC listening. I took it camping lot and ran it on a 12 V rechargable battery.
by k8jd
Sat Dec 17, 2022 4:53 pm
Forum: Engineering & DX'ing
Topic: "Narrower" Band FM
Replies: 7
Views: 1576

Re: "Narrower" Band FM

The authorities came up with the devation for BCFM , for the best IF noise supression etc, using 1940's tech . It has been used so long, it's hard to make any major changes in spectrum use etc.
by k8jd
Sat Dec 17, 2022 4:46 pm
Forum: Engineering & DX'ing
Topic: searching for tramsmitter output power
Replies: 2
Views: 585

Re: searching for tramsmitter output power

Bobhuge & all, What kind of station are you looking at ? All the AM stations I look up show what must be transmitter output power, or in directional arrays it's the power delivered to a common point going to the array... FM is rated by ERP so you have to back up from a gain antenna system to get the...
by k8jd
Sun Dec 11, 2022 9:49 pm
Forum: Engineering & DX'ing
Topic: AM Radio might have 10 more years
Replies: 44
Views: 10545

Re: AM Radio might have 10 more years

A Radioworld.com article mentions this and brings up the all digital AM mode, which is rarely used. Although many say that HD Radio is almost dead, Xperi hasn't given up on it yet. They are even talking about improving the signal of the FM side, which often simulcasts existing AM broadcasts. https:...
by k8jd
Sat Dec 10, 2022 12:00 pm
Forum: Engineering & DX'ing
Topic: RadioLand FM app
Replies: 6
Views: 1126

Re: RadioLand FM app

I would love to see one for AM, maybe they can't factor in the stations with directional antennas ???
I found a radio travel guide where all the AM stations were represented with a circle based on power only.
by k8jd
Tue Nov 15, 2022 12:17 pm
Forum: Engineering & DX'ing
Topic: St Louis Super Tower
Replies: 18
Views: 2090

Re: St Louis Super Tower

I did see the video on U-tube a few night ago, recalling the big tower sites from working in BC engr in Chicago and Detroit and Two way radio service across Michigan. I was in the middle of a transition from Analog to digi near the end of my carreer.
by k8jd
Mon Nov 14, 2022 6:27 pm
Forum: Engineering & DX'ing
Topic: Older Holiday Light String Tips
Replies: 1
Views: 609

Re: Older Holiday Light String Tips

A few years ago I bought some of the new Fat L.E.D. strings, they have a large envelope of colored plastic with a tiny L.E.D. emitter inside them. They seemed to fail quickly outside when the temp went blow 20 Degrees. Working OK indoors. I tried to take the parts of the string apart and found about...
by k8jd
Mon Nov 07, 2022 6:57 pm
Forum: Engineering & DX'ing
Topic: November FM DX
Replies: 4
Views: 788

Re: November FM DX

Here near the "City" there are repeater and LPFM signals filling all the breaks between full power stations and hard to hear any DX. :(
by k8jd
Mon Nov 07, 2022 6:55 pm
Forum: Engineering & DX'ing
Topic: Mini DXpedition
Replies: 3
Views: 719

Re: Mini DXpedition

I shoud do that sometime, and set up my new IC7300 in the car and drive up the lakeshore, maybe to the campground north of Port Huron. Maybe the picnic site is better for less overhead wire and noise. I have watched the bandwidth of AMBC signals on the band monitor scope ! Lots of fun, but never bee...
by k8jd
Wed Oct 12, 2022 12:37 pm
Forum: Engineering & DX'ing
Topic: New digital converter
Replies: 9
Views: 1902

Re: New digital converter

Any Way you can get an outdoor antenna connected,?
Not one of those amplified UHF jobs that are so popular, recently, they will not help for Ch 12 !
Indoor Rabbit ears are only good when you are right in the middle of an urban area near the TV transmitting towers. :red
by k8jd
Wed Oct 12, 2022 12:36 pm
Forum: Engineering & DX'ing
Topic: New digital converter
Replies: 9
Views: 1902

Re: New digital converter

Any Way you can get an outdoor antenna connected,?
SORRY managed to post same lines twice.
by k8jd
Sun Sep 18, 2022 11:58 am
Forum: Engineering & DX'ing
Topic: AM Radio might have 10 more years
Replies: 44
Views: 10545

Re: AM Radio might have 10 more years

I believe the Canadians can go well above 1 kW on the US "local" channels . here limited to 1 kW ND, 24 hours, on 1230, 1240, 1340, 1400, 1450 and 1490.
Used to be a night hours limit of 250 W but that was changed a few decades ago.
by k8jd
Thu Sep 15, 2022 2:05 pm
Forum: Engineering & DX'ing
Topic: AM Radio might have 10 more years
Replies: 44
Views: 10545

Re: AM Radio might have 10 more years

In LA, NYC, and Toronto AM will remain in use do to the fact that the FM spectrum is crowded and there is a significant Ethnic population in each city. In a city like Toledo for instance, I can see AM going away. Add Chicago to that list. Probably a few others. Toronto has a need so great they are ...