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The Advantage of Synchronous Detection in the Sony ICF-SW7600GR
RHF wrote:
The Advantage of Synchronous Detection in the Sony ICF-SW7600GR 'portable' AM/FM Shortwave Radio READ - The Advantage of Synchronous Detection in the Sony 7600G -by- Daniel A. Grunberg http://www.nyx.net/~dgrunber/7600g.ssi 'nyx.net' doesn't resolve either here in MN or from a host in SF, CA. Is this the current URL? Regards, Michael |
The Advantage of Synchronous Detection in the Sony ICF-SW7600GR
msg wrote:
RHF wrote: The Advantage of Synchronous Detection in the Sony ICF-SW7600GR 'portable' AM/FM Shortwave Radio READ - The Advantage of Synchronous Detection in the Sony 7600G -by- Daniel A. Grunberg http://www.nyx.net/~dgrunber/7600g.ssi 'nyx.net' doesn't resolve either here in MN or from a host in SF, CA. Is this the current URL? Regards, Michael If you really want to see the article, put the title in quotes and search for it on google. You will get one hit and then can look at the cached version. That being said, the author of the does not really know how a sync detector works, nor does he understand how it helps to receive a signal. In other words, don't bother with this article. |
The Advantage of Synchronous Detection in the Sony ICF-SW7600GR
"craigm" wrote in message ... msg wrote: RHF wrote: The Advantage of Synchronous Detection in the Sony ICF-SW7600GR 'portable' AM/FM Shortwave Radio READ - The Advantage of Synchronous Detection in the Sony 7600G -by- Daniel A. Grunberg http://www.nyx.net/~dgrunber/7600g.ssi 'nyx.net' doesn't resolve either here in MN or from a host in SF, CA. Is this the current URL? Regards, Michael If you really want to see the article, put the title in quotes and search for it on google. You will get one hit and then can look at the cached version. That being said, the author of the does not really know how a sync detector works, nor does he understand how it helps to receive a signal. In other words, don't bother with this article. How about this URL: http://www.radio-electronics.com/inf...t/sync_det.php The Shadow Kows Lamont |
The Advantage of Synchronous Detection in the Sony ICF-SW7600GR
craigm wrote:
msg wrote: RHF wrote: The Advantage of Synchronous Detection in the Sony ICF-SW7600GR 'portable' AM/FM Shortwave Radio READ - The Advantage of Synchronous Detection in the Sony 7600G -by- Daniel A. Grunberg http://www.nyx.net/~dgrunber/7600g.ssi 'nyx.net' doesn't resolve either here in MN or from a host in SF, CA. If you really want to see the article, put the title in quotes and search for it on google. You will get one hit and then can look at the cached version. Indeed; that is always a good strategy but for archival references I wondered if there was a correct URL. That being said, the author of the does not really know how a sync detector works, nor does he understand how it helps to receive a signal. In other words, don't bother with this article. I didn't. FWIW, I have always just zero-beated a BFO on AM weak or noisy signals to improve intelligibility; on receivers with good LO and BFO stability, this works well. In an SSB mode, the product detectors and narrower filters are additional advantages for AM signals. As a simple homebrew retrofit for a synch det. capability, have any readers ever built an injection lock circuit that locks the BFO using limited IF (perhaps best suited to older rigs) or added a phase detector and error amp to drive a varactor on the BFO xtal for newer rigs? I see that there is a not-well-regarded injection lock mod for the r-390a, but I would appreciate hearing about results for other rigs as well. Regards, Michael |
The Advantage of Synchronous Detection in the Sony ICF-SW7600GR
On Nov 18, 9:15 am, msg wrote:
RHF wrote: The Advantage of Synchronous Detection in the Sony ICF-SW7600GR 'portable' AM/FM Shortwave Radio READ - The Advantage of Synchronous Detection in the Sony 7600G -by- Daniel A. Grunberg http://www.nyx.net/~dgrunber/7600g.ssi 'nyx.net' doesn't resolve either here in MN or from a host in SF, CA. Is this the current URL? Regards, Michael Dan Grunberg's "Home Page" = http://www.nyx.net/~dgrunber/ Welcome - Here are some of my documents that may interest you. TOPIC - SHORTWAVE RADIO * Advice to Shortwave Newbies (useful sources of information and useful links) * Minimal Antennas and Grounds (why they may be all you need) * So You're Certain You Need an Outdoor Antenna (with a link to a reasonable design) * Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening (this article could save you some money) * A Rambling Review of the Lowe HF-150 (a nice receiver) * Nifty 48- inch (122-cm) Whip Antenna with a PL-259 Connector * The Sony 7600G and Its Synchronous Detector (why sync detectors are worth having) http://www.mwcircle.org/res-receiver-sonysw7600g.htm http://www.eham.net/reviews/detail/1215 http://www.eham.net/reviews/detail/1534 http://www.mwcircle.org/res-receiver-sonysw7600gr.htm http://www.dxer.ca/content/view/8/53/ * Analog vs. Digital Receivers (an introduction) * Preventing Wire Antennas from Breaking in the Wind IMHO - For the 'Price' the Sony ICF-SW7600GR 'portable' AM/FM Shortwave {World Band} Radio is one of the Best Radios featuring AM Synchronous Detection [.] Read - PortWars http://www.radiointel.com/portwars.htm http://www.fixya.com/support/t166573...9_sangean_head sony no baloney ~ RHF |
The Advantage of Synchronous Detection in the Sony ICF-SW7600GR
On Nov 18, 6:09 pm, Bart Bailey wrote:
In posted on Sun, 18 Nov 2007 11:45:38 -0600, craigm wrote: Begin That being said, the author of the does not really know how a sync detector works, nor does he understand how it helps to receive a signal. I read the piece and was surprised enough to review again his claim of SD alleviating multipath issues to be sure I hadn't missed something, then came to the same conclusion as you have. IMHO - He simply wrote the piece from the 'perspective' of a Radio Listener {User} trying to Put-into-Words the Results that he was Hearing. He was not trying to 'communicate' to a Radio Engineer or Techie - http://en.wikipedia.org/wiki/Techie thinking like a radio listener -who- enjoys the medium ~ RHF |
The Advantage of Synchronous Detection in the Sony ICF-SW7600GR
On Nov 19, 8:37 am, Bart Bailey wrote:
In posted on Mon, 19 Nov 2007 01:35:39 -0800 (PST), RHF wrote: Begin On Nov 18, 6:09 pm, Bart Bailey wrote: In posted on Sun, 18 Nov 2007 11:45:38 -0600, craigm wrote: Begin That being said, the author of the does not really know how a sync detector works, nor does he understand how it helps to receive a signal. I read the piece and was surprised enough to review again his claim of SD alleviating multipath issues to be sure I hadn't missed something, then came to the same conclusion as you have. IMHO - He simply wrote the piece from the 'perspective' of a Radio Listener {User} trying to Put-into-Words the Results that he was Hearing. He was not trying to 'communicate' to a Radio Engineer or Techie -http://en.wikipedia.org/wiki/Techie thinking like a radio listener -who- enjoys the medium ~ RHF . - Then he shouldn't have tried to flog technical terms beyond - their meaning, - - just say that sometimes SD makes the thing sound better. BB - Yes sometimes AM-Sync does make 'things' sound better. on that we can agree ~ RHF |
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