Re: [IRCA] Slider Loopstick Cancels Out Image Reception
Without the coil peaked on 540 kHz, KSUH-1450 was blasting in on 540 kHz, sounding like a local. Interestingly, the Sony 7600G has an image on 540 from our own KONP-1450Khz 14 miles away in Port Angeles... is the only radio that I pick that up on. -- Colin Newell - Editor - Web-Design / E-Commerce / Writing Victoria, British Columbia, Canada ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Slider Loopstick Cancels Out Image Reception
Hey Colin: My Sony 7600GR also has substantial problems with images, and like you I don't have any other receivers that have images to that extent. Even the stock Eton e100 fares better on images. Using an outboard Terk loop or similar in adjacent orientation to notch out 1450 allows good reception on 540; still, it is notable how strong the image problems on the 7600 series are. Methinks Sony had shortwave in mind when they designed these. Kevin S Bainbridge Island, WA Interestingly, the Sony 7600G has an image on 540 from our own KONP-1450Khz 14 miles away in Port Angeles... is the only radio that I pick that up on. -- Colin Newell - Editor - Web-Design / E-Commerce / Writing Victoria, British Columbia, Canada ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Slider Loopstick Cancels Out Image Reception
Hi Colin and Kevin, The Sony ICF-SW7600G and GR models have a serious image issue 910 kHz below strong locals, but the loopstick is a non-alignable type like that of the ICF-2010, meaning that a Slider-type loopstick is not a possibility to correct the congenital image problem. Almost all other traditional BCB DXing portables (RF-2200, ICF-S5W, etc.) with image issues can have the problem corrected or minimized by the use of a Slider loopstick, or tuned passive loop antennas (which can help minimize image reception in any receiver). Both the ICF-SW7600GR and the ICF-2010 benefit greatly from larger transplanted loopsticks, however. Sensitivity is greatly boosted, with no apparent negative effect on selectivity. But the images and spurious signals are also boosted, since the larger transplanted loopsticks have nothing like the Slider's ability to tune out these nuisance signals. Colin, KONP-1450 in Port Angeles must have a fantastic salt-water transmitting site, because I have even received it here in the null of local slopper KSUH-1450, during rare night conditions. It was a very satisfying psychological victory, to receive another station right on this foreign language Mega-pest's own frequency :) 73, Gary **Make your life easier with all your friends, email, and favorite sites in one place. Try it now. (http://www.aol.com/?optin=new-dpicid=aolcom40vanityncid=emlcntaolcom0010) ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Slider Loopstick Cancels Out Image Reception
Gary: Colin, KONP-1450 in Port Angeles must have a fantastic salt-water transmitting site, KONP gets out very well. Up here in northern Alberta it's almost a pest as it is in most nights. During 12 hour timer session on 1450 timer it's not unusual to hear 6 ID's from it. Mike in St Isidore, AB ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Slider Loopstick Cancels Out Image Reception
KONP is also common here on the coast. Patrick Martin KGED QSL Manager ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
[IRCA] Slider Loopstick Cancels Out Image Reception
Hello Guys, Doing further investigation on a discovery made by Steve Ratzlaff and confirmed by John Bryant, some testing was done on a Slider E100 tuned to an image frequency of local pest KSUH-1450 (on 540 kHz). Without the coil peaked on 540 kHz, KSUH-1450 was blasting in on 540 kHz, sounding like a local. When the coil was peaked on 540 kHz, however, KSUH's image signal went completely down in the noise, barely audible way under legitimate 540 kHz signal CBK in Saskatchewan. The KSUH image was completely inaudible except when the Slider loopstick was broadside to the pest, in which case is was barely above the noise level. The discovery has major implications for those DXers who love the classic Sony ICF-S5W, but dislike its congenital image problem. With a Slider loopstick, the ICF-S5W would not only drop the images, but have a huge sensitivity boost as well. The 455 kHz Murata CFJ455K5 filter can also be transplanted into the ICF-S5W, like it has been in the E100 to provide razor-sharp selectivity. Sounds like an interesting winter coming up. 73, Gary DeBock **Make your life easier with all your friends, email, and favorite sites in one place. Try it now. (http://www.aol.com/?optin=new-dpicid=aolcom40vanityncid=emlcntaolcom0010) ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
