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Terms of Use have been amended effective October 6, 2019. Make sure you are aware of the new rules! Please visit this thread for details: https://www.mibuzzboard.com/phpBB3/view ... 16&t=48619
Search found 80 matches
- Sat Jan 18, 2020 5:01 am
- Forum: Engineering & DX'ing
- Topic: WWJ signal problems? (+ WJR audio distortion)
- Replies: 79
- Views: 16441
Re: WWJ signal problems? (+ WJR audio distortion)
... is this up near Tawas City, and Day or Night or both? Actually, as you probably know, WWJ and other 50 kW stations from the Detroit Area are among the strongest ground waves and skywaves in that area ... According to the FCC engineering data for WWJ and WJR shown in the graphic below, the 50% n...
- Fri Jan 10, 2020 5:16 am
- Forum: Engineering & DX'ing
- Topic: Passive Repeaters On Hilltops
- Replies: 8
- Views: 2157
Re: Passive Repeaters On Hilltops
Say you put a high gain YagiLog to receive a signal, then feed it into another high gain YagiLog pointed in the opposite direction on a hilltop. How far would the signal be improved beyond the hilltop? Below is an estimate with some idea of the performance of a passive re-transmit arrangement, for ...
- Thu Jan 09, 2020 4:24 am
- Forum: Engineering & DX'ing
- Topic: Passive Repeaters On Hilltops
- Replies: 8
- Views: 2157
Re: Passive Repeaters On Hilltops
Below is a URL to a GTE-Lenkurt book with detailed analyses of point-point r-f link systems, including the use of passive reflectors. Probably it has more information than most people care to know about this topic, but its page numbers in/near the low 100s may give some perspective to CK-722 and oth...
- Tue Jan 07, 2020 11:46 am
- Forum: Engineering & DX'ing
- Topic: Most distant AM/FM/TV signal you ever tuned in?
- Replies: 77
- Views: 23421
Re: Most distant AM/FM/TV signal you ever tuned in?
It is true that WJR once applied for 500 kW 24/7, using a directional pattern so as to reduce radiation to what their 50 kW license produced toward and near Toronto, ON (protecting 740 kHz).
- Tue Jan 07, 2020 3:41 am
- Forum: Engineering & DX'ing
- Topic: Most distant AM/FM/TV signal you ever tuned in?
- Replies: 77
- Views: 23421
Re: Most distant AM/FM/TV signal you ever tuned in?
RE (from CK-722): I did hear WTRX doing DX tests a few times, ...They would play a song, play a musical call letter jingle, and then the next song. it was Monday Morning about 1:00 or 2:00 AM. In the weekly 'experimental period' during the early-mid 1960s, WJR sometimes would test either their alter...