Re: [Elecraft] K1 AGC mod

2015-02-05 Thread NZ0T
I found a 0.47uf cap in my junk box and replaced C31 with it. I've not had a chance to have a QSO yet but just listening around I hear a big improvement. Thanks all for your comments! 73 Bill NZ0T -- View this message in context:

Re: [Elecraft] K1 AGC mod

2015-02-01 Thread Myron WVØH
I would be interested in this too. Do you know of a web page that describes the mod? Myron WVØH Printed on Recycled Data On Feb 1, 2015, at 8:37 AM, NZ0T nz0t...@gmail.com wrote: I just built K1 SN 3353 and it's a neat little rig. I usually wear headphone so now that I've experienced the

Re: [Elecraft] K1 AGC mod

2015-02-01 Thread William Carpenter
Here is the other site: http://mailman.qth.net/pipermail/elecraft/2005-May/044374.html On Sun, Feb 1, 2015 at 9:53 AM, Myron WVØH myronschaf...@gmail.com wrote: I would be interested in this too. Do you know of a web page that describes the mod? Myron WVØH Printed on Recycled Data On

Re: [Elecraft] K1 AGC mod

2015-02-01 Thread Phil Wheeler
I believe there is a message in the list archives from Wayne on this subject. But apparently this was before the list archives started. About midway down on this page is a relevant message from Wayne. http://www.qsl.net/ve3mcf/elecraft_reflect/K1_AGC_Notes.txt 73, Phil W7OX On 2/1/15 7:37

Re: [Elecraft] K1 AGC mod

2015-02-01 Thread William Carpenter
Here are a couple of places I have found something: http://www.jl3amk.org/en/#k1_mods The other one that I got the cap values from that are in my OP were from an Elecraft reflector post by a ZL that I can't find now. I'm going have to check my junk drawer and see if I have nay caps that will

[Elecraft] K1 AGC mod

2015-02-01 Thread NZ0T
I just built K1 SN 3353 and it's a neat little rig. I usually wear headphone so now that I've experienced the AGC lag I would like to do something about it. I know it's audio derived so it will never sound like a K2 or K3 but if I could reduce the loud spike at the start of a received

Re: [Elecraft] K1 AGC mod

2015-02-01 Thread William Carpenter
Hi Don, Thanks for your response. I'm sure it's not the thump but rather a spike in the audio derived AGC before it reduces the the level. I'll try decreasing C31 first On Sun, Feb 1, 2015 at 3:51 PM, Don Wilhelm w3...@embarqmail.com wrote: Bill, Decreasing C31 may decrease the attack

Re: [Elecraft] K1 AGC mod

2015-02-01 Thread Don Wilhelm
Bill, Decreasing C31 may decrease the attack time, and decreasing C67 will reduce the hang time. If you are having trouble with the initial 'spike', then I would suggest reducing C31 first. You can experiment with the values. Also take a look at Wayne's comments at

[Elecraft] K1 AGC Mod revisited

2006-01-05 Thread Tom Althoff
Ron ZL1TW and I have been bemoaning the slow recovery time of the AGC that we were experiencing with both of our K1's. Ron's been doing some experimenting as have I using componants from out junkboxes. What we ended up with was changing C31 from a 2.2ufd cap to a 0.22ufd cap. Ron added

Re: [Elecraft] K1 AGC mod?

2005-12-11 Thread Mike Morrow
Tom wrote: The K1 should arrive next week. I see a lot of mods got incorporated... There is mention of shortening the AGC response time by swapping a 1.0uf for the original 2.2uf.Did that mod make it to the current production units as well? No, I don't think Elecraft has embraced that

[Elecraft] K1 AGC mod?

2005-12-10 Thread Tom Althoff
The K1 should arrive next week. I see a lot of mods got incorporated into production K2's (AGC thump, NB audio and 100K pot linearity mod). There is mention of shortening the AGC response time by swapping a 1.0uf for the original 2.2uf.Did that mod make it to the current production units