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Search found 603 matches
- Sun Jun 18, 2023 6:43 pm
- Forum: Engineering & DX'ing
- Topic: Televes Hi-VHF Yagi
- Replies: 34
- Views: 4493
Re: Televes Hi-VHF Yagi
When I read the antennas under test were "inside an attic"......Well I made up my mind . THAT'S the PROBLEM.
- Sun Jun 18, 2023 6:32 pm
- Forum: Engineering & DX'ing
- Topic: Hammarlund HQ 140
- Replies: 2
- Views: 826
Re: Hammarlund HQ 140
That was a great, old "Boat Anchor " of a radio. I have had my share of old receivers donated or sold to me cheap as I was growing into the radio hobby. I have had Hallicrafters, heathkit, hammarlund, RME, WW2 surplus of unknown manufacturer, and so on. Sometimes a beat up, rusty, dubious looking ra...
- Sun Jun 04, 2023 7:48 pm
- Forum: Engineering & DX'ing
- Topic: AM directional arrays
- Replies: 4
- Views: 1126
AM directional arrays
I saw an interesting discussion of phased vertical antennas. On QRZ.Com/ sub Antennas towers etc.
Lot of the engineering hams jumped in with modeling software graphics.
Reminds me of my study of AMBC tower arrays in my youth !
Lot of the engineering hams jumped in with modeling software graphics.
Reminds me of my study of AMBC tower arrays in my youth !
- Thu Jun 01, 2023 4:34 pm
- Forum: Engineering & DX'ing
- Topic: FM DX e-skip 5/31/23
- Replies: 15
- Views: 2012
Re: FM DX e-skip 5/31/23
I lived in Livonia from 1949 to 1963, In about 1961 I got a three tube Granco FM tuner and connected a twinlead dipole that I tacked to my bedroom wall. Heard and sent reception reports to distant stations all over the map. Got some QSL cards and letters frm ON, W.MI, OH, IN , IL etc. This was long ...
- Wed May 24, 2023 11:51 am
- Forum: Engineering & DX'ing
- Topic: Alternate FM channel use in Canada
- Replies: 2
- Views: 916
Re: Alternate FM channel use in Canada
I don't think directional ants are used for protecting other stations on FM like they do on AM ??
- Fri May 12, 2023 2:59 pm
- Forum: Broadcasting - General
- Topic: FM Transmitter Range
- Replies: 60
- Views: 6905
Re: FM Transmitter Range
Who mentioned hiding tha box and antenna in a tree on state land. ? This 1000 W transmitter will need a 20A #12 Romex power wire going to it , assuming about 2 kW of 120 VAC power to generate 1 Kw of RF output.power .
I sure would leave a $1000+ of gear behind ANYWHERE!
I sure would leave a $1000+ of gear behind ANYWHERE!
- Fri May 12, 2023 2:41 pm
- Forum: Engineering & DX'ing
- Topic: Last Electronics Store
- Replies: 37
- Views: 7150
Re: Last Electronics Store
Anything like it in MI >? I used to ride my bike to Bauers Industrial in old redford in Detroit ! Bought Xtals to use in my novice station from them..
- Wed May 10, 2023 10:51 am
- Forum: Engineering & DX'ing
- Topic: FM power in different areas
- Replies: 35
- Views: 3922
Re: FM power in different areas
When I was a kid I had some books about broadcasting engineering, there were several charts showing signal strength for various distances VS antenna height and power, in the FM band. I converted the data to show how the signal strength varied with distance with low height and high power and vicevers...
- Wed May 10, 2023 10:37 am
- Forum: Engineering & DX'ing
- Topic: Seeking Receiver recommendations
- Replies: 18
- Views: 2211
Re: Seeking Receiver recommendations
I also have a Tecsun 880 and believe the small size can not accommodate a decent AM ferrite stick antenna ! It is sadly lacking in AM and LW sensitivity. For Short Wave listening , it can make up for the poor AM/LW. You can plug in a coax fed antenna or just a wire of 20+ ft and really pull in some ...
- Tue Apr 25, 2023 5:25 pm
- Forum: Engineering & DX'ing
- Topic: FM power in different areas
- Replies: 35
- Views: 3922
Re: FM power in different areas
I started typing my answer and had to feed a hungry, noisy cat, came back and found some one beat me (the ever watchful Ben Z.) with a similar answer
Yes Zone I and II, line C,
Yes Zone I and II, line C,
- Tue Apr 25, 2023 5:23 pm
- Forum: Engineering & DX'ing
- Topic: FM power in different areas
- Replies: 35
- Views: 3922
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: 874
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: 1290
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: 1837
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: 1837
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 !