Ruchan Ozatay wrote: >I will get my K1 with KFL1-4 to build. I want to know your opinions, >which VFO range I have to select?
Eric wrote: >I tried 150 khz at first. The tuning is WAY too fast >and the added frequencies are of no use to QRP... I've been using K1 #175 in the USA since November 2000, and I find the advantages of the 150 kHz span to be overwhelming, but **only** for use in this ITU region. IMHO, the 150 kHz span (actually it's about 170 kHz) has a very controllable and acceptable tuning rate (after FP-R19 was added to the design in 2001 to linearize the tuning rate at about 17 kHz per turn). I also use a little felt padding placed between the VFO knob and the front panel to give a slight amount of rotational resistance. No matter which span is used, the VFO potentiometer shaft needs this extra resistance, IMHO. >and the added frequencies are of no use to QRP... No use??? Certainly there is some use in this ITU region, where 7100 to 7150 kHz is excellent QRP territory and the main justification by far for choosing the wide span. Cross-mode (Morse-LSB) contacts in the phone band from 7150 to 7170 MHz are possible, since the K1 receiver operates in LSB mode (on all bands). When 15m is hot and one or more of the 6,666,666 different contests is wasting good RF energy, 21100 to 21170 kHz provides a haven for Morse QSOs. >I also built for 10.1 mhz as most of the useful QRP activity >seems to be 10.100-10.120. With the 170 kHz span and the 10000 kHz band edge crystal installed, time and propagation info are often available from WWV at 10 MHz in the USA. A useful capbility. HOWEVER, if I lived in another ITU region where Morse operation from 7100 to 7150 kHz was not allowed, and where WWV could not normally be copied, I'd choose with the 80 kHz span. That is probably the best setup for your European K1. 73, Mike / KK5F _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
