K2 and data modes
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Wiring up my K2 for data modes - recall seeing a post from someone who had done an easy mod to get audio out (i.e. "line out") which is not affected by the AF gain control. Have looked through the archives in vain - can anyone help please?
73 Nick G3RWF _______________________________________________ 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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hi Nick,
On 11 Feb 2008 at 7:43, Nick Henwood wrote: > Wiring up my K2 for data modes - recall seeing a post from someone who > had done an easy mod to get audio out (i.e. "line out") which is not > affected by the AF gain control. Have looked through the archives in > vain - can anyone help please? 73 Nick G3RWF you are probably looking for this: http://w3fpr.qrpradio.com/index.htm I use the digital board discribed by the late Om EA3BLQ. www.qsl.net/ea3blq 73! de Werner OE9FWV -- Sacha Guitry (1895 - 1957) Le pire que vous puissiez faire a l'homme qui vous a pris votre femme, c'est de la lui laisser. PGP-Key: <http://www.qsl.net/oe9fwv/furlan.asc> Fone +43 5522 75013 Fax +43 820 555 85 2621 Mobile +43 664 6340014 _______________________________________________ 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 Nick G3RWF
Nick:
>Wiring up my K2 for data modes - recall seeing a post from someone >who had done an easy mod to get audio out (i.e. "line out") which is >not affected by the AF gain control. Have looked through the >archives in vain - can anyone help please? >73 Nick G3RWF That was Don Wilhelm, W3FPR. Don WAS selling a fixed-output audio device which he'd designed and for which I'd laid out the PCB design. See: http://w3fpr.qrpradio.com/K2_Fixed_Audio_Output.htm Just got a note from Don yesterday that he's sold the LAST(!) of his PC boards and is NOT planning on ordering more for resale. During the time that Don was selling this device, he went from suggesting that it be installed on the left side panel of the K2 (see bottom image on the link above), to installing it between the FP and CTRL PC boards. See: http://w3fpr.qrpradio.com/download_files/FP-CB%20mounting%20photos.pdf Moving from the original installation point to the second site requires that all components be laid down flat against the PC board (e.g. low-profile), which the original PC board design did NOT accommodate terribly well. As I type this reply, I am _IN_ the process of redesigning the PC board layout to more readily accommodate standard components laid flat against the board. I have not yet decided whether to actually offer this PC board for sale 'in quantity' or to just make a few (in the kitchen) and then offer them on a per order basis. If demand was higher (I think Don pretty much answered most of the screaming demand for this device), I'd have a 'batch' run off at FAR Circuits, but this may not be the case. Regardless, it appears that new boards will be available very soon... probably within a week or two. If you'd like to obtain a board, please contact me. I will be happy to send you a PDF of the new board layout if you are interested. First, visit Don't links (above) to see what is required for the installation. Cheers, Tom Hammond N0SS _______________________________________________ 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 |
Re: K2 and data modes
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I've got a few extras of these boards here, so if anyone wants one,
let me know. 73, doug X_CMAE_Category: 0,0 Undefined,Undefined Received-SPF: neutral (smtp08.embarq.synacor.com: 76.3.52.3 is neither permitted nor denied by domain of embarqmail.com) Date: Mon, 11 Feb 2008 08:54:27 -0600 From: Tom Hammond <[hidden email]> Nick: >Wiring up my K2 for data modes - recall seeing a post from someone >who had done an easy mod to get audio out (i.e. "line out") which is >not affected by the AF gain control. Have looked through the >archives in vain - can anyone help please? >73 Nick G3RWF That was Don Wilhelm, W3FPR. Don WAS selling a fixed-output audio device which he'd designed and for which I'd laid out the PCB design. See: http://w3fpr.qrpradio.com/K2_Fixed_Audio_Output.htm Just got a note from Don yesterday that he's sold the LAST(!) of his PC boards and is NOT planning on ordering more for resale. During the time that Don was selling this device, he went from suggesting that it be installed on the left side panel of the K2 (see bottom image on the link above), to installing it between the FP and CTRL PC boards. See: http://w3fpr.qrpradio.com/download_files/FP-CB%20mounting%20photos.pdf Moving from the original installation point to the second site requires that all components be laid down flat against the PC board (e.g. low-profile), which the original PC board design did NOT accommodate terribly well. As I type this reply, I am _IN_ the process of redesigning the PC board layout to more readily accommodate standard components laid flat against the board. I have not yet decided whether to actually offer this PC board for sale 'in quantity' or to just make a few (in the kitchen) and then offer them on a per order basis. If demand was higher (I think Don pretty much answered most of the screaming demand for this device), I'd have a 'batch' run off at FAR Circuits, but this may not be the case. Regardless, it appears that new boards will be available very soon... probably within a week or two. If you'd like to obtain a board, please contact me. I will be happy to send you a PDF of the new board layout if you are interested. First, visit Don't links (above) to see what is required for the installation. Cheers, Tom Hammond N0SS _______________________________________________ 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 Nick G3RWF
Nick
The easiest connection is a line from J5 to an 1/8" audio socket on the rear panel. This is how my k2 is set up to work with the Microham MicroKeyer. Bob KD8CGH KX1, K2, K3, ... |
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This works but it is very "soundcard dependent." If your soundcard has limited input gain or is particularly "noisy" the direct connection is marginal. The "smart" solution is a combination of J5 and a 20 dB buffer like the W3FPR/N0SS board. More recent interfaces - microHAM DigiKeyer and microKEYER II - include low noise preamplifiers to work with fixed level audio sources as low as 50 to 100 mV (e.g., J5 in the K3 and the fixed level outputs in many YaeComWood radios). 73, ... Joe Subich, W4TV microHAM America http://www.microHAM-USA.com http://groups.yahoo.com/group/microHAM [hidden email] > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of rkayakr > Sent: Monday, February 11, 2008 12:06 PM > To: [hidden email] > Subject: Re: [Elecraft] K2 and data modes > > > > Nick > The easiest connection is a line from J5 to an 1/8" audio > socket on the rear panel. This is how my k2 is set up to work > with the Microham MicroKeyer. > Bob > KD8CGH > KX1, K2, K3, ... > > -- > View this message in context: > http://www.nabble.com/K2-and-data-modes-tp15406823p15415744.html > Sent from the Elecraft mailing list archive at Nabble.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 rkayakr
is there something that normally plugs into j5? or is it still a "future
use" header? i'm tiptoeing my way toward some psk31 on my k2. tnx jim ab3cv _______________________________________________ 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 Nick G3RWF
On Mon 11 Feb 2008 at 21:36:02 EST Jim Miller (AB3CV) wrote ...
Is there something that normally plugs into J5? Or is it still a "future use" header? Jim, Nothing plugs into J5 yet. 73, Gary KI4GGX P.S. Also check out the link entitled "Add Fixed Audio Out to the K2" at http://w3fpr.qrpradio.com/index.htm (it's at the bottom of the list). _______________________________________________ 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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