[Elecraft] Norcal Sierra - Wilderness Radio Sierra - Dans Small Parts
Guys'.. Let's see if we can sort the mess in my head ... Thinkin of building the Sierra (from that famous QRP'er and constructor we all know and love..) later on in the year.. I have (if I can find it) a manual for ..a Sierra.. transceiver, I think it's the Norcal version... but not sure.. What I need to get straight in my tiny mind is-: 1.. Are the Norcal Sierra and the Wilderness Radio Sierra the SAME BEAST in ALL WAYS or SOME WAYS..? 2.. Are they a totally different beast...? 3.. Should I order the boards from Dans Small Parts and source the parts..? 4.. if I were to order the parts from Dans, would I eventually end up with virtually the same radio as the Norcal Sierra version of the radio or are there differences...? 5.. Could I use the manual for constructing a Dans version of the radio, that I need to still find here...? The Wilderness Sierra is usually the way I would go on things like this, but like most of us, there are a LOT of projects getting done here in the shack at the moment, so money is an issue for the initial outlay.. Sourceing the parts (if the boards from Dan's would make me end up with virtually the same radio as the Wilderness Sierra version) would DEFINATLEY be the way I would go this time... After all sourcing parts is half the fun ..right..!? In the end if I needed for some reason, technically, or from the point of a constructor, to order the complete kit from Wilderness Radio instead, this would be a big financial outlay for me at this point so would have to wait.. I hear y'all say there is always the ARRL version with templates.. Dare I ask... is this yet a 3rd version of a different Beast... ?? All of the above questions I suppose will bring many varied answers, but I would appreciate someone who can explain this to me like a kid in diapers.. Can you guys please help me resolve this problem that I've admittedly had for some time now.. You guys have an uncanny way of solving most problems I have had over the years so I have every faith in y'all.. Hope I've explained my predicament properly.. Here Goes.. GO..! [EMAIL PROTECTED] 72's Andy GM0NWI K2 Fully Loaded QRP S/n 01432 K2 Fully Loaded QRO S/n 05469 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.8/716 - Release Date: 09/03/2007 18:53 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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] HF Digital interface for the K2...
Folks, After wearing out the front panel headphone connector (twice in 2 yearsdue to connecting/disconnecting soundcard cable for HF digital modes) it has become quite obvious that I need a dedicated HF digital interface port for my K2/100. I looked through the LA3ZA K2 mod information and saw that Pauli (EA3BLQ.SK) had a board that would solve the issue that I have. So, here come the questions for my fellow Elecraft K2/100 owners 1) Has anyone on the Elecraft list added a dedicated HF digital port to their K2? 2) Did they use Pauli's board? If not, does anyone have a similar alternative? 73, Tony L. (KJ5XF) P.S. I wonder if Elecraft is thinking about selling an HF digital interface option for their kits... I know I sure would buy one ;-) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HF Digital interface for the K2...
Hi Tony: It sounds like you simply need a fixed level audio port. I use a Microham MicroKeyer. They advise bringing audio from J5 back to a jack on the rear of your K2/100. Now I have not as yet actually done this, but I haven't knocked out any other jacks yet either. :) Check out http://www.microham-usa.com/Products/USB/Cables/DB15-EL-K2.pdf for some information. 73, Jamie WB4YDL -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tony Lyon Sent: Saturday, March 10, 2007 9:40 AM To: elecraft@mailman.qth.net Subject: [Elecraft] HF Digital interface for the K2... Folks, After wearing out the front panel headphone connector (twice in 2 yearsdue to connecting/disconnecting soundcard cable for HF digital modes) it has become quite obvious that I need a dedicated HF digital interface port for my K2/100. I looked through the LA3ZA K2 mod information and saw that Pauli (EA3BLQ.SK) had a board that would solve the issue that I have. So, here come the questions for my fellow Elecraft K2/100 owners 1) Has anyone on the Elecraft list added a dedicated HF digital port to their K2? 2) Did they use Pauli's board? If not, does anyone have a similar alternative? 73, Tony L. (KJ5XF) P.S. I wonder if Elecraft is thinking about selling an HF digital interface option for their kits... I know I sure would buy one ;-) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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] HF Digital interface for the K2...
Jamie, Thanks Being able to connect to the J5 connector looks like it will do the trick. I looked in the K2 manual and I noticed that the J5 AF output is derived directly from pins 4 and 5 of the NE602 product detector. So, my next question is:. Does the NE602 have enough output drive to drive the AF input of a RigEXpert? 73, Tony Lyon (KJ5XF) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HF Digital interface for the K2...
Hi A small audio amp. and you have fixed audio level at the back. http://www.pi4cc.nl/personal/pc2a/k2/ Peter PC2A Tony Lyon schreef: Jamie, Thanks Being able to connect to the J5 connector looks like it will do the trick. I looked in the K2 manual and I noticed that the J5 AF output is derived directly from pins 4 and 5 of the NE602 product detector. So, my next question is:. Does the NE602 have enough output drive to drive the AF input of a RigEXpert? 73, Tony Lyon (KJ5XF) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: [Elecraft] HF Digital interface for the K2...
Don Wilhelm, W3FPR, offers a really nice fixed output interface for the K2. However, it may NOT offer output of the CW SIDETONE, since that comes in on a different input port to the AF amp and is not currently sampled by the fixed output amp. Contact Don at: Don Wilhelm W3FPR [EMAIL PROTECTED] 73, Tom Hammond N0SS At 11:18 AM 3/10/2007, Peter wrote: Hi A small audio amp. and you have fixed audio level at the back. http://www.pi4cc.nl/personal/pc2a/k2/ Peter PC2A Tony Lyon schreef: Jamie, Thanks Being able to connect to the J5 connector looks like it will do the trick. I looked in the K2 manual and I noticed that the J5 AF output is derived directly from pins 4 and 5 of the NE602 product detector. So, my next question is:. Does the NE602 have enough output drive to drive the AF input of a RigEXpert? 73, Tony Lyon (KJ5XF) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: [Elecraft] Norcal Sierra - Wilderness Radio Sierra - Dans Small Parts
Why don't you just build a K1 instead? I have a Sierra here with all 9 band modules. It is a fine rig, although it needed various add-ons (DL-QRP-PA, KC2 Keyer/Counter) to make it nice to use. If I was starting again, I would get a K1 73, Dave G3VGR K2 #4783 Andy - GM0NWI wrote: Guys'.. Let's see if we can sort the mess in my head ... Thinkin of building the Sierra (from that famous QRP'er and constructor we all know and love..) later on in the year.. I have (if I can find it) a manual for ..a Sierra.. transceiver, I think it's the Norcal version... but not sure.. What I need to get straight in my tiny mind is-: 1.. Are the Norcal Sierra and the Wilderness Radio Sierra the SAME BEAST in ALL WAYS or SOME WAYS..? 2.. Are they a totally different beast...? 3.. Should I order the boards from Dans Small Parts and source the parts..? 4.. if I were to order the parts from Dans, would I eventually end up with virtually the same radio as the Norcal Sierra version of the radio or are there differences...? 5.. Could I use the manual for constructing a Dans version of the radio, that I need to still find here...? The Wilderness Sierra is usually the way I would go on things like this, but like most of us, there are a LOT of projects getting done here in the shack at the moment, so money is an issue for the initial outlay.. Sourceing the parts (if the boards from Dan's would make me end up with virtually the same radio as the Wilderness Sierra version) would DEFINATLEY be the way I would go this time... After all sourcing parts is half the fun ..right..!? In the end if I needed for some reason, technically, or from the point of a constructor, to order the complete kit from Wilderness Radio instead, this would be a big financial outlay for me at this point so would have to wait.. I hear y'all say there is always the ARRL version with templates.. Dare I ask... is this yet a 3rd version of a different Beast... ?? All of the above questions I suppose will bring many varied answers, but I would appreciate someone who can explain this to me like a kid in diapers.. Can you guys please help me resolve this problem that I've admittedly had for some time now.. You guys have an uncanny way of solving most problems I have had over the years so I have every faith in y'all.. Hope I've explained my predicament properly.. Here Goes.. GO..! [EMAIL PROTECTED] 72's Andy GM0NWI K2 Fully Loaded QRP S/n 01432 K2 Fully Loaded QRO S/n 05469 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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] DK0SU in EQP at 14062 kHz
Hello, DK0SU takes part in EQP 2007. At this time I am calling on 14062 kHz During night time (from about 2200 UTC) will be around 7030 kHz. Please do not forget that on sunday 15m may be open. Actual frequency is announced at the #elecraft IRC channel regularly. Hope to see u 73 Thomas DK0SU (/DF7TV) Elecraft K2 #4138 -- ___ Surf the Web in a faster, safer and easier way: Download Opera 9 at http://www.opera.com Powered by Outblaze ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HF Digital interface for the K2...
I second Tom's comment. I built and installed one of Don's boards in my K2, feeding the audio to pin 4 of the front panel Mic connector. It provides a good fixed audio output that seems not to load the output of the detector. Now I can just plug the audio interface into the Mic connector and get everything the interface box needs. I found it to be an advantage to not have the sidetone in that audio feed since the computer really doesn't need to deal with it. After all, if the computer is sending the CW, it already knows what is going out, right? On Mar 10, 2007, at 9:35 AM, Tom Hammond wrote: Don Wilhelm, W3FPR, offers a really nice fixed output interface for the K2. However, it may NOT offer output of the CW SIDETONE, since that comes in on a different input port to the AF amp and is not currently sampled by the fixed output amp. Contact Don at: Don Wilhelm W3FPR [EMAIL PROTECTED] 73, Tom Hammond N0SS At 11:18 AM 3/10/2007, Peter wrote: Hi A small audio amp. and you have fixed audio level at the back. http://www.pi4cc.nl/personal/pc2a/k2/ Peter PC2A Tony Lyon schreef: Jamie, Thanks Being able to connect to the J5 connector looks like it will do the trick. I looked in the K2 manual and I noticed that the J5 AF output is derived directly from pins 4 and 5 of the NE602 product detector. So, my next question is:. Does the NE602 have enough output drive to drive the AF input of a RigEXpert? 73, Tony Lyon (KJ5XF) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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 - Jack Brindle, W6FB - ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] Norcal Sierra - Wilderness Radio Sierra - Dans SmallParts
Why don't you just build a K1 instead? I have a Sierra here with all 9 band modules. It is a fine rig, although it needed various add-ons (DL-QRP-PA, KC2 Keyer/Counter) to make it nice to use. If I was starting again, I would get a K1 73, Dave G3VGR K2 #4783 === I have built both the K1 and Sierra kits. Advantages of Sierra are all 9 bands and ease of operation. No manual needed for this non digital radio. These are the radios I prefer to operate. No thinking necessary. And you ger a real RF gain control. It is actually an RF cut control but it does control the imput to the IF filter, unlike most modern radios. I think all other advantages go to the K1. Over twice the power. Many Sierra owners do mods to increase the power, with more or less sucess. Increasing the voltage to max is the easiest. The K1 has optional internal tuner. The tuning rate is far better. At least twice as good. And tuning is smoother. And with my kits, the K1 has been more stable. The conversion schemes for both are similar so I don't think there should be much preformance difference. If you build the Sierra, there are over 80 toroids to wind if all bands are included. If the Sierra had the K1 VFO and 5 watts out, I probably would prefer it to the K1, for home use, but it doesn't so I sold mine and kept the K1. Rick Dettinger K7MW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HF Digital interface for the K2...
I have Don's fixed audio mod in my K2 and it works very well. It's wired to the front panel mic connector, which works perfectly when you use the Tigertronics SL-1+ audio interface. I spoke to Don about MicroHam's using the audio available from J5 inside the K2. He didn't think it was a good idea, but he can explain why better than I can. 73, Ken Alexander, VE3HLS --- Tom Hammond [EMAIL PROTECTED] wrote: Don Wilhelm, W3FPR, offers a really nice fixed output interface for the K2. However, it may NOT offer output of the CW SIDETONE, since that comes in on a different input port to the AF amp and is not currently sampled by the fixed output amp. Contact Don at: Don Wilhelm W3FPR [EMAIL PROTECTED] 73, Tom Hammond N0SS At 11:18 AM 3/10/2007, Peter wrote: Hi A small audio amp. and you have fixed audio level at the back. http://www.pi4cc.nl/personal/pc2a/k2/ Peter PC2A Tony Lyon schreef: Jamie, Thanks Being able to connect to the J5 connector looks like it will do the trick. I looked in the K2 manual and I noticed that the J5 AF output is derived directly from pins 4 and 5 of the NE602 product detector. So, my next question is:. Does the NE602 have enough output drive to drive the AF input of a RigEXpert? 73, Tony Lyon (KJ5XF) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: [Elecraft] HF Digital interface for the K2...
Ken and all, I no longer have kits, but I have 18 boards available. The output of the fixed audio board is isolated from all other signals in the K2, so connection to the board output will not have any effect on any normal function of the K2. If you want a look, go to my website http://w3fpr.qrpradio.com. I do have an updated method to mount the board between the front panel and the control board which is ideal for those who want to use no connectors and/or want the output signal to connect to the mic jack - the resistors and capacitors are laid down flat or low profile components may be used. The input to the audio amp on my board is close to the equivalent of the signals appearing at J5 - I just chose to use the outbound side of the mute transistors rather than the direct product detector output - for some reason at the time, I wanted my fixed audio muted, and the connections were easier doing it the way I did. There is no problem with using the output from J5 as suggested by MicroHam, except that it is a very low level, and the MicroHam interface has no amplifier - it simply feeds the balanced output through their box and on to the soundcard connected as a single ended signal - so they lose 3 dB by switching to single ended output and depend on the soundcard gain to compensate - it will work, but could reduce the signal to noise ratio at the soundcard input. I suppose I will get a rash of requests for the board now G. When these 18 are gone, they will be no more, but the circuit is easy to wire on a piece of perfboard, and I am considering an update to provide the K2 with both input and output for digital modes so you can plug directly to the computer soundcard (no interfece box required), but I do need to find the time to put something together. 73, Don W3FPR -Original Message- I have Don's fixed audio mod in my K2 and it works very well. It's wired to the front panel mic connector, which works perfectly when you use the Tigertronics SL-1+ audio interface. I spoke to Don about MicroHam's using the audio available from J5 inside the K2. He didn't think it was a good idea, but he can explain why better than I can. 73, Ken Alexander, VE3HLS --- Tom Hammond [EMAIL PROTECTED] wrote: Don Wilhelm, W3FPR, offers a really nice fixed output interface for the K2. However, it may NOT offer output of the CW SIDETONE, since that comes in on a different input port to the AF amp and is not currently sampled by the fixed output amp. Contact Don at: Don Wilhelm W3FPR [EMAIL PROTECTED] 73, Tom Hammond N0SS At 11:18 AM 3/10/2007, Peter wrote: Hi A small audio amp. and you have fixed audio level at the back. http://www.pi4cc.nl/personal/pc2a/k2/ Peter PC2A Tony Lyon schreef: Jamie, Thanks Being able to connect to the J5 connector looks like it will do the trick. I looked in the K2 manual and I noticed that the J5 AF output is derived directly from pins 4 and 5 of the NE602 product detector. So, my next question is:. Does the NE602 have enough output drive to drive the AF input of a RigEXpert? 73, Tony Lyon (KJ5XF) -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.8/717 - Release Date: 3/10/2007 2:25 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HF Digital interface for the K2...
Sounds great. I think I will patiently await the update. Thanks again. David Wilburn [EMAIL PROTECTED] K4DGW K2 #5982 Don Wilhelm wrote: Ken and all, I no longer have kits, but I have 18 boards available. The output of the fixed audio board is isolated from all other signals in the K2, so connection to the board output will not have any effect on any normal function of the K2. If you want a look, go to my website http://w3fpr.qrpradio.com. I do have an updated method to mount the board between the front panel and the control board which is ideal for those who want to use no connectors and/or want the output signal to connect to the mic jack - the resistors and capacitors are laid down flat or low profile components may be used. The input to the audio amp on my board is close to the equivalent of the signals appearing at J5 - I just chose to use the outbound side of the mute transistors rather than the direct product detector output - for some reason at the time, I wanted my fixed audio muted, and the connections were easier doing it the way I did. There is no problem with using the output from J5 as suggested by MicroHam, except that it is a very low level, and the MicroHam interface has no amplifier - it simply feeds the balanced output through their box and on to the soundcard connected as a single ended signal - so they lose 3 dB by switching to single ended output and depend on the soundcard gain to compensate - it will work, but could reduce the signal to noise ratio at the soundcard input. I suppose I will get a rash of requests for the board now G. When these 18 are gone, they will be no more, but the circuit is easy to wire on a piece of perfboard, and I am considering an update to provide the K2 with both input and output for digital modes so you can plug directly to the computer soundcard (no interfece box required), but I do need to find the time to put something together. 73, Don W3FPR -Original Message- I have Don's fixed audio mod in my K2 and it works very well. It's wired to the front panel mic connector, which works perfectly when you use the Tigertronics SL-1+ audio interface. I spoke to Don about MicroHam's using the audio available from J5 inside the K2. He didn't think it was a good idea, but he can explain why better than I can. 73, Ken Alexander, VE3HLS --- Tom Hammond [EMAIL PROTECTED] wrote: Don Wilhelm, W3FPR, offers a really nice fixed output interface for the K2. However, it may NOT offer output of the CW SIDETONE, since that comes in on a different input port to the AF amp and is not currently sampled by the fixed output amp. Contact Don at: Don Wilhelm W3FPR [EMAIL PROTECTED] 73, Tom Hammond N0SS At 11:18 AM 3/10/2007, Peter wrote: Hi A small audio amp. and you have fixed audio level at the back. http://www.pi4cc.nl/personal/pc2a/k2/ Peter PC2A Tony Lyon schreef: Jamie, Thanks Being able to connect to the J5 connector looks like it will do the trick. I looked in the K2 manual and I noticed that the J5 AF output is derived directly from pins 4 and 5 of the NE602 product detector. So, my next question is:. Does the NE602 have enough output drive to drive the AF input of a RigEXpert? 73, Tony Lyon (KJ5XF) -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.8/717 - Release Date: 3/10/2007 2:25 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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] Norcal Sierra - Wilderness Radio Sierra - Dans Small Parts
Andy, just my 2-bitsworth as a fellow G. I ordered a kit from Norcal in early January to give me some experience in building with SMDs. It wasn't despatched quickly, so be prepared for a long wait. Some incorrect SMD capacitors were supplied and they were notified of that a month ago. The request was acknowledged with a promise of replacements, but the parts still haven't arrived and a polite enquiry has fallen on deaf ears, so the small kit remains unbuilt. I have, however, obtained and built three fairly complex SMD-populated units from the US for friends in the interim, so building the Norcal is now largely an irrelevance. Their response might be different for North Americans - indeed, it may be just my personal misfortune here on this side of the pond, but one thing I'm sure of is that nothing beats Elecraft, whose response, communication and service are without doubt the best in the business. Good luck with whatever you build. 73 DaveL G3TJP ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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] HF Digital interface for the K2...
Don, Thanks for the info. Well, I would like to get 2 of your boards from you... So, what's the cost and where do I mail the check to? 73, Tony L. P.S. Thanks a lot for all of the great hints regarding the AF direct output. I REALLY hope that Elecraft considers adding an HF digital port for the K2 in the futire some time... Hint-Hint... :-) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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] Question from a newbie
I have come into possession of a K2/100 with the DSP filter (KDSP2) but does not have the noise blanker (KNB2). Question: (1) Is the noise blanker a worthwhile purchase? Any thoughts would be appreciated. 73, Pete-K8PT B. Peter Treml [EMAIL PROTECTED] 725 W. Magnetic St. www.qrz.com/k8pt Marquette, Mi. 49855 USA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] Question from a newbie
http://www.qsl.net/ve3mcf/elecraft_reflect/KNB2_Notes.txt http://www.ac6rm.net/mailarchive/html/elecraft-list/2001-11/msg00530.html Hope this helps. Bored stiff? Loosen up... Download and play hundreds of games for free on Yahoo! Games. http://games.yahoo.com/games/front ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] Question from a newbie
Pete It all depends on the type of noise you experience. For some kinds of noise, the KNB2 works like magic. For other kinds, it has no effect at all. For some odd noises, it sort of works. Ultimately, it's a crap shoot. It is an inexpensive option, and I would add it as insurance for those times when it does work. I have it in both my K2s. 73, Bob N6WG - Original Message - From: B Peter Treml [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, March 10, 2007 4:44 PM Subject: [Elecraft] Question from a newbie I have come into possession of a K2/100 with the DSP filter (KDSP2) but does not have the noise blanker (KNB2). Question: (1) Is the noise blanker a worthwhile purchase? Any thoughts would be appreciated. 73, Pete-K8PT B. Peter Treml [EMAIL PROTECTED] 725 W. Magnetic St. www.qrz.com/k8pt Marquette, Mi. 49855 USA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: [Elecraft] Question from a newbie
I have a K2 with DSP, and just last weekend added the KNB2 to the mix. So far, for the noise I have here, the DSP denoiser works much better than the KNB2. I've just been switching it in and out to see what affect it has, and so far haven't found much noise that it removes. I'm in a relatively quiet place though, so that might be it. As Bob said, it's cheap, and it's a kit you can build and install in about an hour or two, so why not!? :) 73, Jeff N6GQ On 3/10/07, Bob Tellefsen [EMAIL PROTECTED] wrote: Pete It all depends on the type of noise you experience. For some kinds of noise, the KNB2 works like magic. For other kinds, it has no effect at all. For some odd noises, it sort of works. Ultimately, it's a crap shoot. It is an inexpensive option, and I would add it as insurance for those times when it does work. I have it in both my K2s. 73, Bob N6WG - Original Message - From: B Peter Treml [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, March 10, 2007 4:44 PM Subject: [Elecraft] Question from a newbie I have come into possession of a K2/100 with the DSP filter (KDSP2) but does not have the noise blanker (KNB2). Question: (1) Is the noise blanker a worthwhile purchase? Any thoughts would be appreciated. 73, Pete-K8PT B. Peter Treml [EMAIL PROTECTED] 725 W. Magnetic St. www.qrz.com/k8pt Marquette, Mi. 49855 USA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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
[QRP-L] Re: [Elecraft] Norcal Sierra - Wilderness Radio Sierra - Dans Small Parts
Guy's... Just to say, THANKYOU SO MUCH to everyone that has so far responded to my yesterdays plea for help as regards the Above subject heading... The response to say the least as been overwhelming, I feel there are other posts yet to come from those who have Yet to view my past plea.. That can only be a good thing ..I shall continue to read whatever makes it through on The subject for sure.. ONE THING, that I have to apologise for is that I made an error of judgement in my subject heading of the plea Request in that... it is NOT indeed Dans Small Parts (well..at least I think I made a mistake) who indeed stocks The boards only parts for the Sierra it should have read Far Circuits from what I believe from some of the Input to my request that I have seen so far from others who responded.. SO SORRY.. for the confuse, totally on my part you understand, lets hope that anyone in the future reads the lists Archives BEFORE looking for the boards only thing through the wrong seller..! Again I apologise for the confusion.. As for the findings... 1.. Most folks are of the opinion that ANYONE not just myself, who is thinking about venturing on the journey Of constructing a Sierra transceiver, should do so through the purchase of the full kit or at least the Parts they can afford from Wilderness Radio who's website is well documented on the www. In retrospect I kinda knew this would be the way most folks would have ventured, for a number of reasons :- Wilderness Sierra - Complete (if the builder so desires) Kit 1.. The kit can be purchased complete or in parts that the constructor can purchase as an when needed At a later date. 2.. The construction of the boards, thru having plated thru holes makes it a much easier task for both The experienced builder and also someone no so experienced to accomplish the goal.. Some may make Mistakes along the way, some may not...either way the end product if one goes down the route of purchasing The rig kit from the folks at Wilderness Radio the whole experience will be a much more enjoyable One with less hassle of sourcing parts, having to fit things in when the layout of the board(s) From other vendors would not necessarily mean the construction of the radio was that straight forward.. A 10/10 in my book for sure... Far Circuits Sierra version - Boards Only Kit 1.. One could if they felt confident enough and if the financial constraints at the time meant that this was the only feasible option, purchase the parts only boards from www.farcuircits.com .. But with the quality Of the boards from this vendor (as mentioned to me through various replies today) NOT being as top quality As the boards in the complete kit from Wilderness Radio.. some preparation and thought would need to go Into the initial planning stages WELL BEFORE the start of the construction of the radio was to begin for it To be a successful build.. The Parts Only boards available from requires that the builder must scrounge around for the other (some Quite important in the construction of the rig) more important parts of the radio, that are NOT included In the parts only boards kit available from Far Circuits... And as the radio was designed initially Some time ago, these parts, the builder might find... nie impossible to source in todays present climate.. 2.. With this kit (Far Circuits) as far as I have been advised, some of the parts need to be orientated awkwardly ..perhaps A problem for the first time builder or just a plain hassle..Problems may arise because of this in the de-bugging Stage of the build... The boards are not of as great quality as the Wilderness Radio version.. Some parts May be hard to source... Norcal Sierra Version 1..This is primarily the SAME version as the Norcal Sierrra and the SAME version as the Sierra in the pages Of the ARRL Handbooks.. So I guess the same negatives apply here (for me personally anyway), in that the Boards would need to be made from doing some etching and duplicating (already done on the Far Circuit kit But still not quite as good as the Wilderness Radio version) of the boards, would need to be done here.. Parts Sourcing would also need to be done if one were to attempt building the ARRL Sierra Version ... NOT.! You all understand such a bad thing... The fun to be had sourcing, re-routing components to a better Or modified layout... And the circuit boards, as far as I have came to understand, are still... although OK Not to the best of quality.. 2..The Wilderness Sierra version has had improvements made of this version of the radio also, which are incorporated In its boards from the outset... 3..Lastly.. THE MANUAL..
[Elecraft] Re: Norcal Sierra - Wilderness Radio Sierra - Dans Small Parts
Andy, I'm sorry I don't have time to answer all your specific questions about the Sierra. Looks like you got help from others. I upgraded the design significantly when it became the first Wilderness Radio kit. I strongly recommend building that version, which comes with a complete manual and parts kit. You can start with just one band module, then wind more toroids whenever you're ready :) The K1 is something of a Sierra on steroids -- higher power, digital display included, relay switched bands, internal ATU, internal battery, and smaller. But both rigs have their strong points. Good luck, and let me know how it works. 73, Wayne N6KR --- http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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] HAKKO Huzzahs
Hi everybody. Just sitting here revamping a few K2 enhancements from the past and the thought leaps to mind, thanks for the advise Tom! HAAKO is GOOD! I couldn't do without my trusty 936 and 808. Best Regards, Bob K7HBG PS. Sure wish I had a sales franchise! ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HAKKO Huzzahs
[EMAIL PROTECTED] wrote: Hi everybody. Just sitting here revamping a few K2 enhancements from the past and the thought leaps to mind, thanks for the advise Tom! HAAKO is GOOD! I couldn't do without my trusty 936 and 808. Best Regards, Bob K7HBG PS. Sure wish I had a sales franchise! At Bob's (K7HBG) recommendation, I bought two 936's (one with the standard hand piece and one with the micro hand piece) and a tweezer smd removal hand piece. I've been very pleased with them. Much nicer than my old Weller soldering station. And, I had a phone call from a nice young lady at Hakko asking if I was satisfied with the 936 I purchased. Jack K8ZOA www.cliftonlaboratories.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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] HAKKO Huzzahs
Oops. Tom Hammond N0SS that is, for the good advise. Sorry Tom ;0). Bob Hi everybody. Just sitting here revamping a few K2 enhancements from the past and the thought leaps to mind, thanks for the advise Tom! HAAKO is GOOD! I couldn't do without my trusty 936 and 808. Best Regards, Bob K7HBG PS. Sure wish I had a sales franchise! ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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] Need an IC
Hi, I'm in need of an IC for my Katsumi keyer. Manufacturer: OKI P/N: D51AO5P Anybody have an idea where someone might find these creatures by ones or twos? Mouser doesn't have them. They are pretty easy to run down on Google...if you want to buy, um, say 10,000 or so. Since I'm not interested in cornering the market on these things, a supplier that caters to the little guy would be nice. Suggestions? 73, Larry, K0RS (K2 #2073) PS: Nice working some of you guys in the EQP this weekend. Now that's room service! Choose from over 150,000 hotels in 45,000 destinations on Yahoo! Travel to find your fit. http://farechase.yahoo.com/promo-generic-14795097 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: [Elecraft] HAKKO Huzzahs
The 808 is a life saver on those multi-legged critters. Stan Rife W5EWA Houston, TX K2 S/N 4216 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Saturday, March 10, 2007 9:06 PM To: elecraft@mailman.qth.net Subject: [Elecraft] HAKKO Huzzahs Oops. Tom Hammond N0SS that is, for the good advise. Sorry Tom ;0). Bob Hi everybody. Just sitting here revamping a few K2 enhancements from the past and the thought leaps to mind, thanks for the advise Tom! HAAKO is GOOD! I couldn't do without my trusty 936 and 808. Best Regards, Bob K7HBG PS. Sure wish I had a sales franchise! ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: [Elecraft] HAKKO Huzzahs
I have had a Hakko 936 for about a year, based on Tom's website recommendation, and have been very happy with it. At the recommendation of Jack, K8ZOA, I just bought and received a 950 tweezers to use with my 936 station in order to make removal of a couple bad TSSOP-14 chips easier. It worked like a champ. I removed the chips, cleaned up with solder wick, and installed new chips without a hitch. I was also able to remove a good chip from an old prototype board and reinstall on a new one. I didn't like the tweezers for installing the fine pitch parts, since they hide the pads, and the chip might slip out while adjusting position. I want to try a hot air rework station, but they're awfully expensive. This brand was recommended to me by Van, W1WCG, as a reasonably priced option... http://www.madelltech.com/MLReworkStations.html The price of the ML-853K looks real good... and it should be good for both removal and installation. 73, Larry N8LP www.telepostinc.com Jack Smith wrote: [EMAIL PROTECTED] wrote: Hi everybody. Just sitting here revamping a few K2 enhancements from the past and the thought leaps to mind, thanks for the advise Tom! HAAKO is GOOD! I couldn't do without my trusty 936 and 808. Best Regards, Bob K7HBG PS. Sure wish I had a sales franchise! At Bob's (K7HBG) recommendation, I bought two 936's (one with the standard hand piece and one with the micro hand piece) and a tweezer smd removal hand piece. I've been very pleased with them. Much nicer than my old Weller soldering station. And, I had a phone call from a nice young lady at Hakko asking if I was satisfied with the 936 I purchased. Jack K8ZOA www.cliftonlaboratories.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: [Elecraft] Question from a newbie
I have had two K2's fully loaded. One with a 38xx serial and the other with a 44xx serial. Mine have never left the desk and I have yet to find any type of noise artificial or other that the NB works on. It's fun to build but in my opinion if you are looking for bang for the buck, that's not it. 73, Rich Kd0zv -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jeff Kinzli N6GQ Sent: Saturday, March 10, 2007 7:22 PM To: Elecraft Mail Posting Subject: Re: [Elecraft] Question from a newbie I have a K2 with DSP, and just last weekend added the KNB2 to the mix. So far, for the noise I have here, the DSP denoiser works much better than the KNB2. I've just been switching it in and out to see what affect it has, and so far haven't found much noise that it removes. I'm in a relatively quiet place though, so that might be it. As Bob said, it's cheap, and it's a kit you can build and install in about an hour or two, so why not!? :) 73, Jeff N6GQ On 3/10/07, Bob Tellefsen [EMAIL PROTECTED] wrote: Pete It all depends on the type of noise you experience. For some kinds of noise, the KNB2 works like magic. For other kinds, it has no effect at all. For some odd noises, it sort of works. Ultimately, it's a crap shoot. It is an inexpensive option, and I would add it as insurance for those times when it does work. I have it in both my K2s. 73, Bob N6WG - Original Message - From: B Peter Treml [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, March 10, 2007 4:44 PM Subject: [Elecraft] Question from a newbie I have come into possession of a K2/100 with the DSP filter (KDSP2) but does not have the noise blanker (KNB2). Question: (1) Is the noise blanker a worthwhile purchase? Any thoughts would be appreciated. 73, Pete-K8PT B. Peter Treml [EMAIL PROTECTED] 725 W. Magnetic St. www.qrz.com/k8pt Marquette, Mi. 49855 USA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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: Elecraft@mailman.qth.net 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] Elecraft CW Net Announcement
Good Evening, I hope you all are well. I have heard a few of you on EQP and hope to work a few more before I go to bed. Only one contact on 80 meters so far but it may get better soon. Now for the quandry. As of 2 AM we go through a time change. From standard time to daylight savings time. Not that any time truly gets saved but we move things around so folks get less sleep. Cows still get milked, cats get fed, birds wake up and sound the day. But we humans get to think we are changing something. Ach! Now the question: do we keep the local times and change the zulu time or do we go to one hour later local time? Since we changed local times to allow for better operation during the winter months I think we should change back to what we had before. Thus 2300z will stay and Sunday 4 PM will change. That should give us the propagation we had about a month ago which was fairly good. As the sun keeps coming back northward we will see even more improvement. But the sun has the final say. When it gets speckled once again we should be able to work further more easily. Since we've not used more than the East call for breaking pileups I will simplify the notes to match what actually occurs. Hail signs and relays have worked well so they stay in place. Now I go back to the other room and see if I can work a few of you on 80 meters. Tomorrow: 1) Call by geographic area (East, All) 2) Hail signs (first letter or two of the suffix of your call) 3) NCS help (as well as QSP/QNP relay help) Please join us: Sunday 2300z (Sunday 4 PM PDT) 14050 kHz Monday 0200z (Sunday 7 PM PDT) 7045 kHz Kevin. KD5ONS ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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] Sidetone Mod Working
Thanks to all for your assistance. After playing around for quite a while with this mod, I finally have it optimized for my K2. Sidetone is set to 580 Hz and measured at 589 Hz. I went through over a dozen combinations before settling on the combination listed below. L1 was removed and replaced with a 4.7 uF capacitor. C33 was removed and replaced with a 1 uF capacitor in series with L1. The effects of this are: 1) Sidetone harmonics reduced as follows (ref to sidetone): 2nd harmonic from -31 to -43 dB (17 dB lower) 3rd harmonic from -27 to -50 dB (23 dB lower) 4th harmonic from -48 to -71 dB (23 dB lower) 5th harmonic from -40 to -68 dB (28 dB lower) 6th harmonic from -59 to -72 dB (13 dB lower) The sidetone is now lower in volume for the same sidetone level setting. It went from a level setting of 40 to 94 for the same volume level. Overall the sidetone sounds less rough. While the level has been reduced, it is still plenty loud for me at a setting of 255. Be nice to drop the third harmonic further as this should give a little warmer sound. An active filter in the sidetone line might be a solution. It didn't seem to matter whether L1 was before or after the capacitor. I left it after. Also a resistor in series with L1 was tried. I used a 200 ohm trimmer and tried adjusting it over its range with various capacitor configurations. At no time did I find increasing the resistance above zero ohms to be beneficial. In fact it was quite the opposite. Increasing resistance decreased the sidetone level and increased the strength of the harmonics in all cases. Also, some combinations of capacitors increased the receive to transmit thump. My T/R delay is set to 0.01. It appears the the T/R thump comes from both the sidetone and the receiver audio chain. Although most is from the sidetone line. Perhaps an active high pass filter on the sidetone line would be the solution. A little noise also comes from muting FETs Q6 and Q7. Also C29 was changed to 80 uF which reduced the thump level as well. The value of C29 is highly dependant on the impedance of the speaker. I use an external 8 ohm speaker. Please do not use the values of capacitors listed above in your mods without careful testing. The values I ended up with are very specific to my sidetone pitch, volume, and external speaker. In fact changing the sidetone pitch will change the intensity of the sidetone and it's harmonics. With testing one can optimize their K2 to their specific liking, but it comes at a price. I sacrificed the ability to change the sidetone pitch for a better sounding sidetone and less T/R thump. Sure is fun tinkering with the K2 though! -- Darrell Bellerive Amateur Radio Stations VA7TO and VE7CLA Grand Forks, British Columbia, Canada ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
