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Search found 608 matches
- Tue Apr 25, 2023 5:23 pm
- Forum: Engineering & DX'ing
- Topic: FM power in different areas
- Replies: 35
- Views: 4419
Re: FM power in different areas
Power Answers Most chicago FM transmitting is done from a few buildings a thousand ft tall or more, The FCC has a chart that shows required power Reduction when the antenna is over 500 ft tall for Class B and C stations. This is to Give an equivalent signal level at a certain distance from the tran...
- Fri Apr 21, 2023 5:26 pm
- Forum: Engineering & DX'ing
- Topic: If ATSC 3.0 broadcasts pack 50 radio stations in one TV channel, I’m all ears
- Replies: 2
- Views: 959
Re: If ATSC 3.0 broadcasts pack 50 radio stations in one TV channel, I’m all ears
FM ;subchannels are bad enough!
So, when driving around Oakland county lake areas, the main FM stereo HD channel just goes mono, but the "subchannels" Just go dead silent if the signal level drops much.
That's VHF and UHF is sure to be worse for loosing signals when moving.
So, when driving around Oakland county lake areas, the main FM stereo HD channel just goes mono, but the "subchannels" Just go dead silent if the signal level drops much.
That's VHF and UHF is sure to be worse for loosing signals when moving.
- Fri Apr 21, 2023 5:19 pm
- Forum: Engineering & DX'ing
- Topic: "Solar Max Might Arrive Early"
- Replies: 6
- Views: 1381
Re: "Solar Max Might Arrive Early"
If solar max will be poor , the next few cycles...I will have to spend my nights on the lower HF bands and sleep all day ! 160, 80 and 60M are not very different when Sol is lazy.
- Wed Mar 29, 2023 7:46 pm
- Forum: Engineering & DX'ing
- Topic: Nautel MA3 All Digital AM
- Replies: 13
- Views: 2243
Re: Nautel MA3 All Digital AM
SO...What's a C-MAX? is it hybrid ?syntheticexctasy wrote: ↑Tue Mar 14, 2023 2:53 pmI'll have to try and DX for this. Would be interesting to hear.
I drive a C-MAX and have no problem with AM reception (HD or otherwise)
- Wed Mar 29, 2023 7:44 pm
- Forum: Engineering & DX'ing
- Topic: Nautel MA3 All Digital AM
- Replies: 13
- Views: 2243
Re: Nautel MA3 All Digital AM
no mention of WWFD being only digital in it's Radiolocator page . I guess they have no way to do something so unexpected !
- Wed Mar 29, 2023 7:12 pm
- Forum: Engineering & DX'ing
- Topic: Traveler information stations on AM 530, 1610, etc
- Replies: 20
- Views: 2519
Re: Traveler information stations on AM 530, 1610, etc
I have seen signs on the roads to bridges etc "for info tune to 16xx " The DTW info radio has moved from 920 to 1610. I heard the 920 signal all the way to my Commerce Twp. location. Marysville had a TIS station 0n 1700 I think, antenna was behind the Public Safety building, always seemed to have di...
- Sat Mar 25, 2023 5:11 pm
- Forum: Engineering & DX'ing
- Topic: Congressman Says Make AM a Mandatory Car Safety Feature
- Replies: 44
- Views: 4573
Re: Congressman Says Make AM a Mandatory Car Safety Feature
What about the possible shift to DIGI ony AM stations ???, there have been reports of some stations going to DIGITAL modes like HD without any standard AM signal going out. Is this a possible trend for AM MW stations.
- Mon Feb 06, 2023 5:58 pm
- Forum: Engineering & DX'ing
- Topic: WWV / WWVH
- Replies: 30
- Views: 7985
Re: WWV / WWVH
Yup, today's the day. I usually check reception of CHU along with WWV and go with the clearer signal. Some days, none of those signals are audible enough to use. In that event, I just use the clock on my cell phone, which is usually spot-on with the SW broadcasts. Ho. I don't think there was EVER a...
- Sat Feb 04, 2023 12:42 pm
- Forum: Engineering & DX'ing
- Topic: 3 element FM antenna
- Replies: 10
- Views: 1641
Re: 3 element FM antenna
That sounds about right, measured to the "radiation center" of stacked array antennas.
- Thu Feb 02, 2023 5:21 pm
- Forum: Engineering & DX'ing
- Topic: Small Structures All Over CKLW AM Site On Satellite Image
- Replies: 7
- Views: 1462
Re: Small Structures All Over CKLW AM Site On Satellite Image
I was looking at the latest image on google earth from this year ! Nothing in the field there, can't even get zoomed in to see guy anchors.
Went to the image you had been using and Voila ! THERE are hay cylendar bales all over the field !!
Went to the image you had been using and Voila ! THERE are hay cylendar bales all over the field !!
- Wed Feb 01, 2023 2:12 pm
- Forum: Engineering & DX'ing
- Topic: Small Structures All Over CKLW AM Site On Satellite Image
- Replies: 7
- Views: 1462
Re: Small Structures All Over CKLW AM Site On Satellite Image
They are probably concrete guy wire anchors !!!! I have seen that at a lot of tower sites.
- Wed Feb 01, 2023 2:07 pm
- Forum: Engineering & DX'ing
- Topic: "Narrower" Band FM
- Replies: 7
- Views: 1571
Re: "Narrower" Band FM
Narrower AM HD ? I just took a look at an AM HD siglnal .It covers 30 kHz of the band spectrum ! The "main" carrier is at 1340 kHz, the basic AM sidebands go +/- 5 kHz, the Digital AM stereo "carrier" is at +/-10 KHz and the digital signals extend above 1350 another 5 kHz and below 1330 by another 5...
- Thu Jan 26, 2023 8:58 pm
- Forum: Engineering & DX'ing
- Topic: WDEO 990 night testing?
- Replies: 7
- Views: 1648
Re: WDEO 990 night testing?
The WDEO transmitter site is about .6 miles from the Huron river, do we expect to have fairy good ground conductivity with the water nearby ?
- Thu Jan 26, 2023 8:51 pm
- Forum: Engineering & DX'ing
- Topic: WCAR, Dark ?
- Replies: 34
- Views: 7088
Re: WCAR, Dark ?
AM 1090's audio levels and signal strength are both super faint. The station is barely discernible. Wouldn't surprise me if they are using a long wire setup to remain on the air. My thinking ; if they had a fire , maybe the transmitter is a borrowed one at low power ? Where I worked back in the ear...
- Thu Jan 26, 2023 8:44 pm
- Forum: Engineering & DX'ing
- Topic: 3 element FM antenna
- Replies: 10
- Views: 1641
Re: 3 element FM antenna
You mentioned WMUZ being less then 500 ft AAT, I know the new tower they have been using for decades is a 500 footer (AGL), they abandoned the 300 ft tower and put up the 500 ft right next to it! Been a long time now !