K1 tuning range
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I have built 2 K1 kits and used the 80khz tuning range both times without much thought, as I only needed 20khz or so for all my work. This has never seemed to be a limitation, until now. I have been working the straight key century club (skcc) freq. of 7120khz so have to use my K2 or Sierra. This hardly constitutes a hardship at home but I would like to be able to use my K1 on this freq. when portable, since it is my rig of choice away from the home shack. It seems like 15khz per revolution should not be a problem. This is still slower than my Sierra tuning rate of about 20khz. I did put a very large knob on the Sierra which helps fine tuning. Has anyone gone from 80khz to 150khz and regretted the change? Rick - K7MW
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Rick;
I recently completed K1 2136 and went with the 120pF VFO capacitor. This gave me a tuning range of approx 178KHz and 15KHz/rev which is just a "little" touchy but not difficult. It depends on how stable your fingers are when tuning. I may try 100pF to make it just a bit easier. Russ, N3CO K2 4016 K1 2136 ----- Original Message ----- From: "Rick Dettinger" <[hidden email]> To: <[hidden email]> Sent: Friday, March 24, 2006 12:20 AM Subject: [Elecraft] K1 tuning range I have built 2 K1 kits and used the 80khz tuning range both times without much thought, as I only needed 20khz or so for all my work. This has never seemed to be a limitation, until now. I have been working the straight key century club (skcc) freq. of 7120khz so have to use my K2 or Sierra. This hardly constitutes a hardship at home but I would like to be able to use my K1 on this freq. when portable, since it is my rig of choice away from the home shack. It seems like 15khz per revolution should not be a problem. This is still slower than my Sierra tuning rate of about 20khz. I did put a very large knob on the Sierra which helps fine tuning. Has anyone gone from 80khz to 150khz and regretted the change? Rick - K7MW _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.2.5/284 - Release Date: 3/17/2006 _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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Russ Tobolic wrote:
> Rick; > > I recently completed K1 2136 and went with the 120pF VFO capacitor. This > gave me a tuning range of approx 178KHz and 15KHz/rev which is just a > "little" touchy but not difficult. It depends on how stable your > fingers are when tuning. I may try 100pF to make it just a bit easier. > has anyone tried one of these on the K1 to help with the tuning rate? http://www.oselectronics.com/ose_p101.htm -- GB de ka5oai, Sam Morgan -- linux - the lifetime learning experience _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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-----Original Message----- From: elecraft-bounces+wstriegel=[hidden email] [mailto:elecraft-bounces+wstriegel=[hidden email]] On Behalf Of Sam Morgan Sent: Friday, March 24, 2006 9:26 AM To: elecraft - qth.net Subject: Re: [Elecraft] K1 tuning range I recently purchased the above keyer; I send with my left hand & copy with my right hand. I want the dits on the right paddle(thumb) & the dahs on the left paddle(index finger). Ground in the middle. No wire came with it. What kind of wire do I need & what wire goes to what to connect it to my K2/100? Thanks. Bill KE5UD Russ Tobolic wrote: > Rick; > > I recently completed K1 2136 and went with the 120pF VFO capacitor. This > gave me a tuning range of approx 178KHz and 15KHz/rev which is just a > "little" touchy but not difficult. It depends on how stable your > fingers are when tuning. I may try 100pF to make it just a bit easier. > has anyone tried one of these on the K1 to help with the tuning rate? http://www.oselectronics.com/ose_p101.htm -- GB de ka5oai, Sam Morgan -- linux - the lifetime learning experience _______________________________________________ Elecraft mailing list Post to: [hidden email] 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: [hidden email] 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 |
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Bill Striegel wrote:
> I recently purchased the above keyer; I send with my left hand & copy with > my right hand. I want the dits on the right paddle(thumb) & the dahs on the > left paddle(index finger). Ground in the middle. No wire came with it. What > kind of wire do I need & what wire goes to what to connect it to my K2/100? You want shielded wire with two conductors inside the shield. Use the shield as the ground connection. Connect the wire from the dit paddle to the tip of a 1/8" stereo plug and the one from the dah paddle to the ring. The shield, of course, goes to the shaft of the plug. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Rick Dettinger-2
Rick:
I have K1 #1423 which I build 3 years ago. I first went with the 150 KHz tuning, it was way to touchy and I changed it to 80 KHz. Lately I have wanted to work just above 7.1 MHz and I opened up the K1 and put a silver mica 22 pfd in parallel with C2. I put it on top of the board. I now get up to 7118 KHz and an finding quite a bit of CW above 7.1. The K1 is my only HF rig. A K2 sure would be nice. 73, Ty, W1TF Rick wrote . . . Has anyone gone from 80khz to 150khz and regretted the change? Rick - K7MW __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Bill Striegel
Bill,
Connect the paddle you want the dots on to the tip of a stereo 3.5 mm phone jack, connect the dah paddle to the ring and connect the paddle common (ground) to the shell - then you can run with INP PDLn, change to INP PDLr to reverse the connection for those with 'other hand persuasion'. Of course, it is just as easy to connect the paddle the other way 'round and use INP PDLr for your normal usage, switch it if required for visitors. 73, Don W3FPR > -----Original Message----- > I recently purchased the above keyer; I send with my left hand & copy with > my right hand. I want the dits on the right paddle(thumb) & the > dahs on the > left paddle(index finger). Ground in the middle. No wire came > with it. What > kind of wire do I need & what wire goes to what to connect it to > my K2/100? > > Thanks. > > Bill > KE5UD > > _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Ralph Tyrrell
Thanks to the list for the comments and suggestions on K1 tuning range.
Good idea Ralph. If you can fine tune just a little more, you will find even more CW up to 7123 or so. 7120 khz plus or minus BC QRM is SKCC suggested freq. and quite a bit of activity up there. SKCC is a group of over 1700 CW operators who have extended straight key nite to always. Same rules as SKN, i.e. mechanical keys only. I have thought about a 100 khz tuning range going from 7025 khz to 7125 khz but that would involve a new xtal in the premix circuit. I guess I will go for 125 khz. This gives about 12 khz per rev. Not too bad, I think. 73 - Rick - -- --- Original Message ----- From: "Ralph Tyrrell" <[hidden email]> To: <[hidden email]> Sent: Friday, March 24, 2006 10:28 AM Subject: Re: [Elecraft] K1 tuning range > Rick: > I have K1 #1423 which I build 3 years ago. I first > went with the 150 KHz tuning, it was way to touchy and > I changed it to 80 KHz. > Lately I have wanted to work just above 7.1 MHz and I > opened up the K1 and put a silver mica 22 pfd in > parallel with C2. I put it on top of the board. > I now get up to 7118 KHz and an finding quite a bit of > CW above 7.1. > > The K1 is my only HF rig. A K2 sure would be nice. > > 73, Ty, W1TF > > > Rick wrote . . . Has anyone gone from 80khz to 150khz > and regretted the change? Rick - K7MW > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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: [hidden email] 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 |
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In reply to this post by Rick Dettinger-2
>Thanks to the list for the comments and suggestions on K1 tuning range.
Claims that the full 180 kHz tuning range of the K1 is too touchy or hard to use are way overstated. Perhaps it would be if one were operating from a tank over bumpy obstacles. I've used the 180 kHz tuning range for more than five years on my K1. The problem is *not* that the frequency changes too fast while tuning. It doesn't. Rather, the real problem results from the the VFO potentiometer having very very little resistance to rotational motion. This makes it hard to remove one's fingers from the dial without imparting some small amount of undesired pot motion. The solution to this problem is very easy. Get some thin felt material and cut out several "washers" to place between the back of the VFO knob and the front panel. Put in just enough until you get that small amount of rotational resistance that allows the dial to remain in position as you let go of it. Capability of full 40m CW band coverage in those regions that allow operation to 7150 kHz more than makes up for any perceived disadvantage. There's a lot up there. Then there's the bonus of being able to copy 10000 kHz WWV on the 30m band (but you'll have to install that alternate 30m hetrodyne crystal to get that). 73, Mike / KK5F _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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Thanks Mike - That makes sense as we used to consider 20 to 25 khz per rev.
ideal in the good old days. Thoes PTO's and LMO's didn't have a free spinning knob. 15 khz per rev. should work just fine, even with the smaller knob on the K1. -Rick - ----- Original Message ----- From: "Mike Morrow" <[hidden email]> To: <[hidden email]> Sent: Monday, March 27, 2006 8:34 AM Subject: Re: [Elecraft] K1 tuning range > >Thanks to the list for the comments and suggestions on K1 tuning range. > > Claims that the full 180 kHz tuning range of the K1 is too touchy or hard to use are way overstated. Perhaps it would be if one were operating from a tank over bumpy obstacles. > > I've used the 180 kHz tuning range for more than five years on my K1. The problem is *not* that the frequency changes too fast while tuning. It doesn't. Rather, the real problem results from the the VFO potentiometer having very very little resistance to rotational motion. This makes it hard to remove one's fingers from the dial without imparting some small amount of undesired pot motion. > > The solution to this problem is very easy. Get some thin felt material and cut out several "washers" to place between the back of the VFO knob and the front panel. Put in just enough until you get that small amount of rotational resistance that allows the dial to remain in position as you let go of it. > > Capability of full 40m CW band coverage in those regions that allow operation to 7150 kHz more than makes up for any perceived disadvantage. There's a lot up there. Then there's the bonus of being able to copy 10000 kHz WWV on the 30m band (but you'll have to install that alternate 30m hetrodyne crystal to get that). > > 73, > Mike / KK5F > > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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: [hidden email] 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 |
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I want to change C31 on my K1 RF board to 1uF at the same time I change my
tuning rate to 150 khz. C31 is an electrolitic capacitor as supplied, however, in looking thru the K1 and K2 parts lists, I find only non electrolitic capacitors for 1uF. Does it matter for C31? This seems to be the value where Elecraft switches to electrolitic capacitors. I know that electrolitic capacitors don't work in all cases but I don't see why it wouldn't work the other way around. Or should I be looking for an electrolitic capacitor? Thanks - Rick - K7MW ----- Original Message ----- From: "Rick Dettinger" <[hidden email]> To: <[hidden email]> Sent: Monday, March 27, 2006 12:20 PM Subject: Re: [Elecraft] K1 tuning range > Thanks Mike - That makes sense as we used to consider 20 to 25 khz per rev. > ideal in the good old days. Thoes PTO's and LMO's didn't have a free > spinning knob. 15 khz per rev. should work just fine, even with the smaller > knob on the K1. -Rick - > ----- Original Message ----- > From: "Mike Morrow" <[hidden email]> > To: <[hidden email]> > Sent: Monday, March 27, 2006 8:34 AM > Subject: Re: [Elecraft] K1 tuning range > > > > >Thanks to the list for the comments and suggestions on K1 tuning range. > > > > Claims that the full 180 kHz tuning range of the K1 is too touchy or > to use are way overstated. Perhaps it would be if one were operating from a > tank over bumpy obstacles. > > > > I've used the 180 kHz tuning range for more than five years on my K1. The > problem is *not* that the frequency changes too fast while tuning. It > doesn't. Rather, the real problem results from the the VFO potentiometer > having very very little resistance to rotational motion. This makes it hard > to remove one's fingers from the dial without imparting some small amount of > undesired pot motion. > > > > The solution to this problem is very easy. Get some thin felt material > and cut out several "washers" to place between the back of the VFO knob and > the front panel. Put in just enough until you get that small amount of > rotational resistance that allows the dial to remain in position as you let > go of it. > > > > Capability of full 40m CW band coverage in those regions that allow > operation to 7150 kHz more than makes up for any perceived disadvantage. > There's a lot up there. Then there's the bonus of being able to copy 10000 > kHz WWV on the 30m band (but you'll have to install that alternate 30m > hetrodyne crystal to get that). > > > > 73, > > Mike / KK5F > > > > > > _______________________________________________ > > Elecraft mailing list > > Post to: [hidden email] > > 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: [hidden email] > 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: [hidden email] 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 |
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