Re: [Elecraft] P3 - KXV3 Gain Mod Question
I started building, I installed the KXV3 first, and had the K3 back on the air before I started the P3. In the P3 stuff, there was an IF Gain Mod, change one resistor on the K3 RF board. I had already re-installed the countable infinity of chassis screws into the K3, and screwing around with an SMD the size of a grain of pepper didn't really light my fire, so I put it aside. Now, with everything working just fine, I'm wondering what that mod really does? Do I need it? \quote http://cliftonlaboratories.com/elecraft_k3_and_panadapters.htm 7r, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-KXV3-Gain-Mod-Question-tp6785475p6785820.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 - KXV3 Gain Mod Question
You need it. Sorry. 73, matt W6NIA K3 #24 On Mon, 12 Sep 2011 17:51:30 -0700 (PDT), you wrote: I started building, I installed the KXV3 first, and had the K3 back on the air before I started the P3. In the P3 stuff, there was an IF Gain Mod, change one resistor on the K3 RF board. I had already re-installed the countable infinity of chassis screws into the K3, and screwing around with an SMD the size of a grain of pepper didn't really light my fire, so I put it aside. Now, with everything working just fine, I'm wondering what that mod really does? Do I need it? \quote http://cliftonlaboratories.com/elecraft_k3_and_panadapters.htm 7r, Bill __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 - KXV3 Gain Mod Question
Fred. An all important question... what is the see number of your K3? 73 Greg On Sep 12, 2011 3:17 PM, Fred Jensen k6...@foothill.net wrote: Had a nice QSO with Dwayne, KE5EFY this AM and got quite a bit of my new P3 set up. It appears to me that everything is working as it should, I got S-units to appear on the ordinate [they mean more to me than dBm on HF], got a few Fn switches set, and he walked me through the PEAK/NOT PEAK toggle. When I started building, I installed the KXV3 first, and had the K3 back on the air before I started the P3. In the P3 stuff, there was an IF Gain Mod, change one resistor on the K3 RF board. I had already re-installed the countable infinity of chassis screws into the K3, and screwing around with an SMD the size of a grain of pepper didn't really light my fire, so I put it aside. Now, with everything working just fine, I'm wondering what that mod really does? Do I need it? Incidentally, while installing the KXV3, I needed to cut jumpers W1 and W2. This is easier said than done. They are right up against a board that I wasn't told to remove. I did finally get them cut with the very end of a small pair of scissors. 73, Fred K6DGW - Northern California Contest Club - CU in the 2011 Cal QSO Party 1-2 Oct 2011 - www.cqp.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 - KXV3 Gain Mod Question
Fred, Look at that mod on the Elecraft website - click on the K3 Mods + Application Notes. There you will find that the mod has been included on all new K3s since about 9/01/2009. If your K3 is older than that, the mod is needed - if it is quite near that date, then you should do the test indicated with the mod instructions to see if it is installed or not. If it is significantly later than 9/01/2009, then the mod is already installed. You only need to remove the front bottom cover to check or install the mod. Yes, you need it for proper (calibrated) operation with the P3, and it is shipped with every P3, so some obtain the part even though it may not be needed. If your K3 does not have the change, by all means make it - it is not difficult - alternately heat the ends of the installed resistor until it comes free - wick away the left-over solder from one solder pad - hold the resistor on place gently with tweezers or other suitable tool and heat first the end where you did not remove the old solder, then apply solder to the other end - check for continuity from both ends of the new resistor to the associated solder pad - if zero ohms, job is done - if not, resolder the offending end. 73, Don W3FPR On 9/12/2011 6:17 PM, Fred Jensen wrote: Had a nice QSO with Dwayne, KE5EFY this AM and got quite a bit of my new P3 set up. It appears to me that everything is working as it should, I got S-units to appear on the ordinate [they mean more to me than dBm on HF], got a few Fn switches set, and he walked me through the PEAK/NOT PEAK toggle. When I started building, I installed the KXV3 first, and had the K3 back on the air before I started the P3. In the P3 stuff, there was an IF Gain Mod, change one resistor on the K3 RF board. I had already re-installed the countable infinity of chassis screws into the K3, and screwing around with an SMD the size of a grain of pepper didn't really light my fire, so I put it aside. Now, with everything working just fine, I'm wondering what that mod really does? Do I need it? Incidentally, while installing the KXV3, I needed to cut jumpers W1 and W2. This is easier said than done. They are right up against a board that I wasn't told to remove. I did finally get them cut with the very end of a small pair of scissors. 73, Fred K6DGW - Northern California Contest Club - CU in the 2011 Cal QSO Party 1-2 Oct 2011 - www.cqp.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
