As I think about this I'm not sure that this will work for the PW-1. Because the PW-1 handles the WARC bands, I'm going to guess that it requires a CI-V line for band information rather than the band level output.
Joe, do you know for sure? The way I "sync" my IC-7800 with a PW-1 makes it clear to me that it's a CI-V path, not a band voltage. Dick, K6KR -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joe Subich, W4TV Sent: Monday, June 02, 2008 1:33 PM To: 'Jerry Flanders'; [email protected] Subject: RE: [Elecraft] K3 and Icom PW-1 > IIRC, this method only works for the major bands. ICOM did not > provide for the others. Actually, my design uses a resistive divider network - with standard 2% resistors - that takes +12V (regulated for reliability) and provides the proper voltage for all bands 160 - 6 M based on which tap is grounded. It is a bit different than the Top Ten approach which uses individual trimmers to set the output voltage for each "band" and source drivers that have been discontinued. Note - Icom uses the same voltage for 17/15 and 12/10 so it requires 8 outputs to cover 160, 80, 40, 30, 20, 15/17, 12/10, and 6m. The decoder does not directly decode 6 meters (BCD 10) but the circuit can be configured to select 6 as a "none of the above" case (BCD 0) or a dedicated 6 M circuit could be added to the basic decoder. I have been asked off-line if I would be willing to offer and interface - either complete or as a mini-kit. I have no interest in building a complete product "by hand" and the cost of a small run in Europe is currently prohibitive. However, I'll ask here one time only ... how much interest would there be in a kit? Should a kit include a case or are users likely to incorporate it in another piece of equipment? Responses direct only ... 73, ... Joe, W4TV > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Jerry Flanders > Sent: Monday, June 02, 2008 1:48 PM > To: [email protected] > Subject: RE: [Elecraft] K3 and Icom PW-1 > > > IIRC, this method only works for the major bands. ICOM did not > provide for the others. > > Jerry W4UK > > At 01:42 PM 6/2/2008, Dick Dievendorff wrote: > >See also Top Ten Devices application note #3, > >http://www.qth.com/topten/apnote3.htm > > > >Unfortunately the schematic doesn't seem to show up (on my > browser), but > >I've seen the schematic before. It's the BCD to voltage > divider network > >(with trimmer pots) that Joe mentions below. > > > >The schematic was once at > http://www.qth.com/topten/icomencd.gif but the > >file doesn't seem to be there now. > > > >I'll forward this to Dave Hawes of Top Ten Devices; maybe he > can get the > >image file restored. > > > >73 de Dick, K6KR > > > > > >-----Original Message----- > >From: [EMAIL PROTECTED] > >[mailto:[EMAIL PROTECTED] On Behalf Of Joe > Subich, W4TV > >Sent: Monday, June 02, 2008 9:30 AM > >To: 'Bob Serwy'; [email protected] > >Subject: RE: [Elecraft] K3 and Icom PW-1 > > > > > >Bob, > > > >There are two approaches that will work to do automatic > >band switching with the K3 and PW-1. The first is to use > >something like the microHAM Band Decoder (or new Station > >Master which replaces Band Decoder) to convert the Elecraft > >(Kenwood) "IF;" CAT data to Icom CI-V Transceive broadcasts. > >The second would be to build a BCD to 1 of 10 decoder and > >use that to drive a voltage divider to create the Icom > >compatible "Band Select" voltage. > > > >The Station Master will be available off the shelf after > >Friedrichshafen. I can supply notes on the BCD decoder > >approach but have not built/tested any devices. That is a > >"low tech" solution and not something microHAM is likely to > >produce and I'm not inclined to get involved in building "one > >off" units since that is a relatively high cost/low return > >proposition. > > > >73, > > > > ... Joe, W4TV > > > > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] On Behalf Of Bob Serwy > > > Sent: Monday, June 02, 2008 11:24 AM > > > To: [email protected] > > > Subject: [Elecraft] K3 and Icom PW-1 > > > > > > > > > Any one has a K3 and a PW-1 hooked up for automatic band > > > switching of the PW-1? If so, how as it accomplished? > > > > > > Thanks > > > > > > Bob Serwy - N9RS > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > Checked by AVG. > Version: 8.0.100 / Virus Database: 269.24.4/1478 - Release > Date: 6/2/2008 7:12 AM > _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
