VE7GZ tried using an SM220 with his K3 a couple years ago - some posts on the subject should be in the reflector archives.
Although it isn't hard to move the center frequency, the SM220 is not sensitive enough to provide a useful display with the K3 from what he said. Considerable external gain is required from his reports. Jack K8ZOA On 10/10/2010 6:10 PM, Radio Amateur N5GE wrote: > On Sun, 10 Oct 2010 13:58:20 -0800, Jim Wiley<[email protected]> > wrote: > > Hello Jim. > > I have a Kenwood SM-230. I wonder if the same holds true for that > model? > > Tom Childers, N5GE > Licensed since 1976 > QCWA Life Member 35102 > > [email protected] > http://www.n5ge.com > http://www.swotrc.net > >> Open up he SM-220. The band-scope option is in a small metal box toward >> the rear of the scope. It will be marked either BS-8 or BS-5, for 8 >> MHz or 5 MHz respectively. It may be possible to retune the unit to the >> desired operating range, although it may be necessary to juggle some >> component sizes. A schematic can be obtained on line I think. Note: if >> it is a BS-5, the only difference between the units is the oscillator >> coil and a few components. Replacing the appropriate parts with those >> for the alternate frequency range will make the switch. Since these are >> "discrete" parts, the swap should be straightforward. The 8 MHz version >> may have enough tuning range to shift over the K3 IF without changing >> parts. As supplied, the BS-8 is set for use with an 8.83 MHz IF, if I >> remember correctly. The band-scope print is part of the main SM-220 >> manual. . >> >> >> - Jim, KL7CC >> >> >> DM4iM wrote: >>> Elecrafters, >>> i like to interface a Kenwood SM220 Scope to a K3. >>> There is a Pan Display Option installed, but there is no hint >>> if it is the BS-5 (3.3Mhz IF) or BS-8 (8.83Mhz IF). >>> How can i determine which Pan Display i have? >>> I got this scope from a SK w/o any manuals. >>> If it is the 8Mhz IF, can i retune it AND will it work with a K3 / >>> KXV3A ? >>> >>> >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
