[Elecraft] K1-4, Which VFO range selection, 80 kHz or 150 kHz

Thu Jun 2 05:17:41 EDT 2005

Thank you Sandy, Tom, Eric, Mike and William and others for your on and off 
list answers. I decided to go with 80kHz, and I am waiting my K1 now (last 
part for Lisa).

73,

Ruchan Ozatay (TA2AH)

----- Original Message ----- 
From: "Sandy" <ebjr at i-55.com>
To: "EricJ" <eric_csuf at hotmail.com>; "'Mike Morrow'" <kk5f at earthlink.net>; 
"'ta2ah-2'" <ta2ah-2 at superonline.com>; <elecraft at mailman.qth.net>
Sent: Wednesday, June 01, 2005 12:33 PM
Subject: Re: [Elecraft] K1-4, Which VFO range selection, 80 kHz or 150 kHz

> I'm afraid I agree for the most part here.  There isn't anything of 
> interest about 80 khz
> from lower band edge.  That will probably "shrink" if the "bandwidth" 
> plans are
> implemented anyway as far as CW is concerned.
> If you are in a contest and have the selectivity ratcheted down to 200 Hz, 
> even with the
> 80 khz. coverage the tuning gets a bit touchy at times.  I can't imagine 
> WHY I'd want to
> tune a 150 Khz segment with a "CW only" rig anyway!
> My only complaint about my beloved K1 is the RIT tuning is rather touchy 
> and
> can be critical to set.  Again especially so with the narrowest 
> selectivity in.
> use!  Been thinking of reducing the "range" of the RIT tuning as I VERY 
> rarely
> work with a "DX offset" more than a couple of khz at most.
> 73
> Sandy W5TVW
> ----- Original Message ----- 
> From: "EricJ" <eric_csuf at hotmail.com>
> To: "'Mike Morrow'" <kk5f at earthlink.net>; "'ta2ah-2'" 
> <ta2ah-2 at superonline.com>;
> <elecraft at mailman.qth.net>
> Sent: Tuesday, May 31, 2005 6:33 PM
> Subject: RE: [Elecraft] K1-4, Which VFO range selection, 80 kHz or 150 kHz
>
>
> | Once again, different strokes...
> |
> | My K1 is primarily a portable radio. At home, I can get WWV on the K2. 
> In
> | the field, I already have a watch. If the watch craps out, I'll ask 
> someone.
> | Gaining WWV is not worth giving up slower tuning on the portion of 30m 
> where
> | I find most CW. My main interest on 30m is county hunting anyway so I'm
> | pretty much 10.114-10.116 anyway.
> |
> | There are more stations from 7000-7050 than I could ever work, but I
> | appreciate the slower tuning for that part of the band.
> |
> | When 15 is open, there are more stations than I can work from 21000 to
> | 21060, and very often nothing above it, at least none that I can hear 
> from
> | this location. Again, the slower tuning for a smaller, more populated 
> part
> | of the band is useful to me.
> |
> | The idea of crossband has never occurred to me as something I would want 
> to
> | do. I can't see the appeal. Likewise, I never use split frequencies so I 
> use
> | the XIT button for SPOT and reduced the range of RIT so it would be 
> useful
> | for me for minor received tone corrections.
> |
> | We have different operating styles and preferences, thus different 
> opinions.
> | Ruchan has the benefit of matching his operating style and preferences 
> to
> | each of us when he sets up his K1.
> |
> | Eric
> | KE6US
> |
> | -----Original Message-----
> | From: elecraft-bounces at mailman.qth.net
> | [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Mike Morrow
> | Sent: Tuesday, May 31, 2005 3:52 PM
> | To: 'ta2ah-2'; elecraft at mailman.qth.net
> | Subject: RE: [Elecraft] K1-4, Which VFO range selection, 80 kHz or 150 
> kHz
> |
> | 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
> |
> |
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