[Elecraft] Feature request - K3 RX EQ by mode
Hello, it would be nice to have RX EQ by mode. Separate adjustment for CW cutting the passband >800 Hz eliminates the fatigue from noise but is rather impractical while (casually) operating SSB... 73, Martin, OK1RR K3 #7554 KPA500 #1565 KAT500 #849 P3 #2752 __ 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] Feature request - Disable Break In on K3
Thanks everyone for the most useful suggestions. I have now determined that the semi break in delay only works when VOX is activated, so if you are using PTT, which I was, and you press the memory button, there is no delay and the PTT output rattles up and down. With VOX activated the hang time is asserted. Fortunately, VOX is mode sensitive, i.e. CW and SSB are set individually so one can live with this. I don't understand why you need VOX for Semi break in to work, but that's how it is. The TX suppression is a good thing to have, but in my case it is handled in the transverters. The TX power is only 1mW and it goes straight into the mixer. At that power level it hardly matters if the input pin diodes or relays are hot switching. What does matter is the settling of the output TX/RX relays and this is OK because I switch the PA bias with a 100mS delay so they don't see power until they have had time to settle. A rapidly changing PTT out status is a problem for my system because, a lot is going on in the TX/RX changeover. There are bias supplies and drain supplies to switch and a rapid on/off could defeat my relatively simple sequencing logic. This takes about 100mS and if the PTT drops part way through and then rises again just after, it could result in hot switching. There is a useful K3 option to delay TX by up to 60mS to allow for amplifiers to switch. I am using this as well, just in case. In the unlikely event anyone is interested, I use one of WW2R/G4FREs band selection boards to provide a 12V signal for 4m/2m/70cm/23cm/13cm/9cm/6cm/3cm band. It monitors the K3 RS232 line. It also provides band by band PTT but I don't use that facility, I gate a single PTT line via the 12V per band. In the shack I have two of W1GHZs miniverters, one for 2m and one for 70cm which provide the interface to the microwave transverters. These share a VHF Apollo local oscillator which develops 116 MHz or 404 MHz as required. Some simple diode/relay logic selects which IF, LO and microwave transverter is activated depending on the microwave band. It is designed for 23/13/9/6/3cm but currently only 23/13/9cm are on the mast. My microwave transverters are located 20m away, at the base of my lightweight Tenamast to cut down on cable losses. The 12V per band and PTT signals are decoded with relay/diode logic. I have 1:6 relays at the top and bottom so I only need one TX and one RX feeder up the mast. This saves much weight and each feeder is only 10m long. As the pre-amps and band select are all in a box at the top, I can use a lightweight LMR400 for the RX line. The TX line is LDF4-50, LDF5-50 would have lower loss but it is not flexible enough. Apart from raising the mast, this is all completely automated, (potentially controllable via the internet if only I had a decent broadband connection) and it does not interfere with HF/VHF operation. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578335.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] K1 - 4 Band For Sale
I also have a surplus 4 band K1, basic, no ATU. It is in the UK where I live. I would like a second K3 so if anyone is interested, contact me off list with an offer. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-4-Band-For-Sale-tp7576727p7578336.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] Feature request - K3 RX EQ by mode
They ARE separate. CW rxEQ is separate from voice mode rxEQ, and rxEQ is disabled in DATA mode. Mike, KS0T -Original Message- From: Martin Kratoska Sent: Wednesday, August 28, 2013 3:11 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Feature request - K3 RX EQ by mode Hello, it would be nice to have RX EQ by mode. Separate adjustment for CW cutting the passband >800 Hz eliminates the fatigue from noise but is rather impractical while (casually) operating SSB... 73, Martin, OK1RR K3 #7554 KPA500 #1565 KAT500 #849 P3 #2752 __ 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] Feature request - K3 RX EQ by mode
It already is. And it is disabled in Data modes. ...bill nr4c Sent from my Verizon Wireless 4G LTE DROID Martin Kratoska wrote: >Hello, > >it would be nice to have RX EQ by mode. Separate adjustment for CW >cutting the passband >800 Hz eliminates the fatigue from noise but is >rather impractical while (casually) operating SSB... > >73, >Martin, OK1RR >K3 #7554 >KPA500 #1565 >KAT500 #849 >P3 #2752 >__ >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] Feature request - K3 RX EQ by mode
Many thanks, I must be blind or non-literate. 73, Martin, OK1RR K3 #7554 KPA500 #1565 KAT500 #849 P3 #2752 Dne 28.8.2013 13:21, Mike Schultz napsal(a): They ARE separate. CW rxEQ is separate from voice mode rxEQ, and rxEQ is disabled in DATA mode. Mike, KS0T -Original Message- From: Martin Kratoska Sent: Wednesday, August 28, 2013 3:11 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Feature request - K3 RX EQ by mode Hello, it would be nice to have RX EQ by mode. Separate adjustment for CW cutting the passband >800 Hz eliminates the fatigue from noise but is rather impractical while (casually) operating SSB... 73, Martin, OK1RR K3 #7554 KPA500 #1565 KAT500 #849 P3 #2752 __ 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] Feature request - Disable Break In on K3
In the unlikely event anyone is interested, I use one of WW2R/G4FREs band selection boards to provide a 12V signal for 4m/2m/70cm/23cm/13cm/9cm/6cm/3cm band. It monitors the K3 RS232 line. It also provides band by band PTT but I don't use that facility, I gate a single PTT line via the 12V per band. Why don't you simply add a second gate? Gate KeyOut (which you are using for PTT) by band select *and* the signal you use as the K3 PTT *input*. In other words take a NOR gate, connect a diode from one input to the K3 PTT input (mic jack and rear panel are in parallel), connect the other input to KeyOut (or KeyOut LP if you are using the ACC jack) and connect the output of the NOR gate to the PTT Input of your WW2R/G4FRE board or the current PTT logic. 73, ... Joe, W4TV On 8/28/2013 4:59 AM, AD6XY wrote: Thanks everyone for the most useful suggestions. I have now determined that the semi break in delay only works when VOX is activated, so if you are using PTT, which I was, and you press the memory button, there is no delay and the PTT output rattles up and down. With VOX activated the hang time is asserted. Fortunately, VOX is mode sensitive, i.e. CW and SSB are set individually so one can live with this. I don't understand why you need VOX for Semi break in to work, but that's how it is. The TX suppression is a good thing to have, but in my case it is handled in the transverters. The TX power is only 1mW and it goes straight into the mixer. At that power level it hardly matters if the input pin diodes or relays are hot switching. What does matter is the settling of the output TX/RX relays and this is OK because I switch the PA bias with a 100mS delay so they don't see power until they have had time to settle. A rapidly changing PTT out status is a problem for my system because, a lot is going on in the TX/RX changeover. There are bias supplies and drain supplies to switch and a rapid on/off could defeat my relatively simple sequencing logic. This takes about 100mS and if the PTT drops part way through and then rises again just after, it could result in hot switching. There is a useful K3 option to delay TX by up to 60mS to allow for amplifiers to switch. I am using this as well, just in case. In the unlikely event anyone is interested, I use one of WW2R/G4FREs band selection boards to provide a 12V signal for 4m/2m/70cm/23cm/13cm/9cm/6cm/3cm band. It monitors the K3 RS232 line. It also provides band by band PTT but I don't use that facility, I gate a single PTT line via the 12V per band. In the shack I have two of W1GHZs miniverters, one for 2m and one for 70cm which provide the interface to the microwave transverters. These share a VHF Apollo local oscillator which develops 116 MHz or 404 MHz as required. Some simple diode/relay logic selects which IF, LO and microwave transverter is activated depending on the microwave band. It is designed for 23/13/9/6/3cm but currently only 23/13/9cm are on the mast. My microwave transverters are located 20m away, at the base of my lightweight Tenamast to cut down on cable losses. The 12V per band and PTT signals are decoded with relay/diode logic. I have 1:6 relays at the top and bottom so I only need one TX and one RX feeder up the mast. This saves much weight and each feeder is only 10m long. As the pre-amps and band select are all in a box at the top, I can use a lightweight LMR400 for the RX line. The TX line is LDF4-50, LDF5-50 would have lower loss but it is not flexible enough. Apart from raising the mast, this is all completely automated, (potentially controllable via the internet if only I had a decent broadband connection) and it does not interfere with HF/VHF operation. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578335.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 __ 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] Looking for a KPA100 in separate enclosure
Anyone have a KPA100 in a separate box that they might be ready to sell. I'd like to have the extra 100 watts (and the tuner if possible) in a separate box to match my K2. Let me know what you might have for sale and we can go from there. Condition, mods, age of the unit and price shipped to zip 45324 would be appreciated. Thanks Tim NZ8J __ 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] KX3 and ALS-500M
I just worked a fellow on 40 meter CW who was mobile with a KX3 and an Ameritron ALS-500M. He said he was getting 225 watts out of the amp driven by the KX3. Is anybody else seeing similar results with the ALS-500M? 73, Dennis W0JX __ 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] RF gain per band
Hello Jean-Marc! I think you are referring to the KX3, since the K3 uses a variable resistance control rather than an encoder. The PRE setting (ON or OFF) and ATTN setting (ON or OFF) is stored by band. In addition, the PRE gain can be set to 10, 20 or 30 dB, also per band. This allows 40 dB of gain tailoring per band. Perhaps using these features will help balance the gain from band to band in your station. 73, Lyle KK7P In a future firmware update, I would like that the RF GAIN could be set independently on each band. __ 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] KX1 power modification
I just traded my beloved little K1 for a KX1. The KX1 has the KXB3080 and tuner. I was going to try the power mod and wondered where you guys get resistors on the internet. I know dumb question but I'm not an electronics guru like you guys. I actually have the 33 ohm resistor but I can't find the 4.7 ohm resistor in my one horse town. The prices I'm coming up with shipping are in the $10-12 dollar range. Thanks 73 Stan AE7UT -- View this message in context: http://elecraft.365791.n2.nabble.com/KX1-power-modification-tp7578344.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] KX1 power modification
Two 10 ohm resistors in parallel should do just fine, or similar combinations. 73 - Mike WA8BXN ---Original Message--- From: Stan AE7UT Date: 8/28/2013 1:16:07 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KX1 power modification I just traded my beloved little K1 for a KX1. The KX1 has the KXB3080 and tuner. I was going to try the power mod and wondered where you guys get resistors on the Internet. I know dumb question but I'm not an electronics guru like you guys. I actually have the 33 ohm resistor but I can't find the 4.7 ohm resistor in my one horse town. The prices I'm coming up with shipping are in the $10-12 dollar range. Thanks 73 Stan AE7UT __ 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] KX1 power modification
I buy from Mouser (good for small quantities) or DigiKey. I usually buy more than one resistor because of the minimum shipping cost. I keep a list of things I'd like to have and order something about once a month. I bought a resistor assortment from Joe Knows Electronics or Sparkfun or Elenco through Amazon.com. Look on amazon for "resistor assortment" or "capacitor assortment" 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Stan AE7UT Sent: Wednesday, August 28, 2013 10:16 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KX1 power modification I just traded my beloved little K1 for a KX1. The KX1 has the KXB3080 and tuner. I was going to try the power mod and wondered where you guys get resistors on the internet. I know dumb question but I'm not an electronics guru like you guys. I actually have the 33 ohm resistor but I can't find the 4.7 ohm resistor in my one horse town. The prices I'm coming up with shipping are in the $10-12 dollar range. Thanks 73 Stan AE7UT -- View this message in context: http://elecraft.365791.n2.nabble.com/KX1-power-modification-tp7578344.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 __ 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] KX1 power modification
I bought a couple of different "resistor kits" on Ebay years ago and I still use those as my main source. Buy more than you need definitely but in the end pay less then buying each time. Although, I am not sure if such kits have a 4.7 ohm resistor but I think it has the 33 ohm. So, use 7 33 ohm resistors in parallel :-). I know there are a variety of resistances under 100 ohms. There are probably different sets available -- buy them all. Of course, I have not looked on Ebay for the last five years at least so I am not sure if they are still available. 73, phil, K7PEH On Aug 28, 2013, at 10:15 AM, Stan AE7UT wrote: I just traded my beloved little K1 for a KX1. The KX1 has the KXB3080 and tuner. I was going to try the power mod and wondered where you guys get resistors on the internet. I know dumb question but I'm not an electronics guru like you guys. I actually have the 33 ohm resistor but I can't find the 4.7 ohm resistor in my one horse town. The prices I'm coming up with shipping are in the $10-12 dollar range. Thanks 73 Stan AE7UT -- View this message in context: http://elecraft.365791.n2.nabble.com/KX1-power-modification-tp7578344.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 __ 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] KX1 power modification
Awesome. Thanks guys. 73 Stan AE7UT -- View this message in context: http://elecraft.365791.n2.nabble.com/KX1-power-modification-tp7578344p7578348.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] RF gain per band
Hi Lyle, Thanks for your fast reply. OK, I adjusted PREAMP gain on each band I'm using, and will use ATTN on low ones. /I suppose that it is better than using RF gain, further in the receiving path ??/ But QRN (latitude 18°S) is so high on "low" bands that I need to use RF gain control, too, which varies along the hours, anyway. (BTW I know that a vertical whip is not ideal regarding atmospheric noise ;-) 72, Jean-Marc, FO/F5LCI /"To nobody, except those who will take pleasure here" (Franz Schubert, 1797-1828)/ -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-per-band-tp7578326p7578349.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] Feature request - Disable Break In on K3
Hi Joe, That's an easy one - I did think about that but rejected the idea as the K3 can go into transmit without a PTT input, in several ways, including the extremely useful voice keyer but also by PC command, pressing the tune button, VOX etc. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578350.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] KX1 power modification
Hi Stan: If you don't mind waiting a few days, I'll be glad to drop a 4.7 ohm 1/4 W resistor in the mail to you. I'm over on the Oregon coast. If so, send me your postal address in a private message. 73 Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Stan AE7UT Sent: Wednesday, August 28, 2013 10:16 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KX1 power modification I just traded my beloved little K1 for a KX1. The KX1 has the KXB3080 and tuner. I was going to try the power mod and wondered where you guys get resistors on the internet. I know dumb question but I'm not an electronics guru like you guys. I actually have the 33 ohm resistor but I can't find the 4.7 ohm resistor in my one horse town. The prices I'm coming up with shipping are in the $10-12 dollar range. Thanks 73 Stan AE7UT -- View this message in context: http://elecraft.365791.n2.nabble.com/KX1-power-modification-tp7578344.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 __ 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] KX1 power modification
Stan, Is your address good on QRZ.com I will mail you a 4.7 ohm no charge... I only have 5% 1/8-1/2 watt let me know...this will get you going till your stock arrives... 73/Scotty/NU0S Dick Dievendorff wrote: I buy from Mouser (good for small quantities) or DigiKey. I usually buy more than one resistor because of the minimum shipping cost. I keep a list of things I'd like to have and order something about once a month. I bought a resistor assortment from Joe Knows Electronics or Sparkfun or Elenco through Amazon.com. Look on amazon for "resistor assortment" or "capacitor assortment" 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Stan AE7UT Sent: Wednesday, August 28, 2013 10:16 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KX1 power modification I just traded my beloved little K1 for a KX1. The KX1 has the KXB3080 and tuner. I was going to try the power mod and wondered where you guys get resistors on the internet. I know dumb question but I'm not an electronics guru like you guys. I actually have the 33 ohm resistor but I can't find the 4.7 ohm resistor in my one horse town. The prices I'm coming up with shipping are in the $10-12 dollar range. Thanks 73 Stan AE7UT -- View this message in context: http://elecraft.365791.n2.nabble.com/KX1-power-modification-tp7578344.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 __ 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] Feature request - Disable Break In on K3
Mike, If you use Joe's solution where PTT is one input into an AND gate, if PTT is not asserted, your relays will not close. All inputs to the AND gate must be present for the output to change state. 73, Don W3FPR On 8/28/2013 2:08 PM, AD6XY wrote: Hi Joe, That's an easy one - I did think about that but rejected the idea as the K3 can go into transmit without a PTT input, in several ways, including the extremely useful voice keyer but also by PC command, pressing the tune button, VOX etc. Mike __ 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] Feature request - Disable Break In on K3
I guess you need to make a choice - "fast" Key Out if you are not using semi break-in or PTT to condition KeyOut. Of course the other solution is to add external delay to KeyOut (in the sequencer). KeyOut is /8R (effectively the receiver MUTE line which works no matter what switching mode - VOX/PTT/Semi break-in - is selected) in the K3. There is no processor involvement and no delay which is *exactly* what I want for driving a QSK PA. If I want delay, I can turn on the VOX to select semi break-in. 73, ... Joe, W4TV On 8/28/2013 2:08 PM, AD6XY wrote: Hi Joe, That's an easy one - I did think about that but rejected the idea as the K3 can go into transmit without a PTT input, in several ways, including the extremely useful voice keyer but also by PC command, pressing the tune button, VOX etc. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578350.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 __ 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] anyone using iMic with K3 or KX3 and FLdigi on a PC?
Is anyone using iMic with FLdigi on a PC with either K3 or KX3? If so I would appreciate knowing your setup! Many thanks to the kind folks (Mark, Dave, Nicklas, Richard) who replied regarding my earlier PSK setup questions, and to Don Wilhelm who advised me by telephone. I have made progress and here is the current setup and results: Acer laptop using FLDigi set to use HamLib for PTT iMic external soundcard connected using Elecraft cables KUSB on COM3 set for 38400 baud KX3 is set for Data A I have a good waterfall and am receiving but I am not sending. The transmit light does light up when I attempt to tramsmit but I have no bars at all showing on the ALC. The sound card is at 75% I was cautioned that 100% would cause distortion. Can anyone share a successful setup using iMic with FLdigi on a PC with either K3 or KX3? THANKS SO MUCH! Julie KT4JR __ 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] KX1 power modification
Thanks for all the generous offers. Scotty NU0S sent me one. Glad to be part of the Elecraft crowd! 73 Stan AE7UT -- View this message in context: http://elecraft.365791.n2.nabble.com/KX1-power-modification-tp7578344p7578355.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] Modules for K3
Thanks everyone. Picked up one module off here and order the other. So again many thanks for you input. My K3 is well on it way to being complete. Bill,W0WFH __ 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] Modules for K3
Anyone have KXV3A, KTCXO3-1 modules or KFL3A-400 crystal filter for sale. Need to upgrade my K3. 73 Don K5AQ __ 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] K2 EXCESSIVE PREAMP NOISE?
Ok, Don and the gang. I'm back from vacation and made some measurements. I measured the S/N using the XG2 sig gen on 14.060, agc off, mode CW, BW 700 hz. All measurements at 1 uv. Here are the results: Preamp off: S+N/N = 23db (mds -129) Preamp on: S+N/N = 29db (mds -136) So, what do you think? Are those numbers in line? (Still sounds noisy to me, hi) - Paul, N2PD -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-EXCESSIVE-PREAMP-NOISE-tp7578009p7578358.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] K2 EXCESSIVE PREAMP NOISE?
Paul, That does not indicate excessive preamp noise, but a bit of overall receiver noise. Your MDS with the preamp off is a bit low - by 4 to 7 dB, and I would not expect that much of a difference between preamp on and preamp off. That means the preamp is not noisy, because the MDS increases significantly with the preamp on (the noise level apparently did not increase significantly). You might want to check your setup - cables and other connections. Also remember that the XG2 is not shielded, so there may be leakage. If you attempted to use an attenuator between the XG2 and the K2, leakage would explain your measurements - use the method and formulas in the XG2 manual to approximate the MDS level. If you are using an attenuator, put the XG2 and its battery inside a well shielded enclosure - Hammond die cast box is recommended, and that will allow you to make MDS measurements in the conventional way. I usually do not do direct MDS measurements on every K2 I repair, but use my well shielded HP8640B signal generator set for -130 dBm output and look at the noise floor and the detected signal levels on Spectrogram. I expect to see the signal at least 6 dB above the receiver noise floor. That gives me a reasonable approximation of a -136 or better MDS and I will look for the problem if it is anything less - that is either with the preamp on or off. Do you have an early K2? - if so, check the winding of T7 - if it is not the 20 turns red and 5 turns green (with the green winding closest to the IF crystals), changing it will pick up 3 to 6 dB in your measurements. If you have the KNB2 installed, check to be certain the 5 dB pad has been removed (see the KNB2 installation instructions). I have recently encountered a few K2 that have not had that pad removed. 73, Don W3FPR On 8/28/2013 5:41 PM, N2PD wrote: Ok, Don and the gang. I'm back from vacation and made some measurements. I measured the S/N using the XG2 sig gen on 14.060, agc off, mode CW, BW 700 hz. All measurements at 1 uv. Here are the results: Preamp off: S+N/N = 23db (mds -129) Preamp on: S+N/N = 29db (mds -136) So, what do you think? Are those numbers in line? (Still sounds noisy to me, hi) __ 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] Feature request - Disable Break In on K3
>If you use Joe's solution where PTT is one input into an AND gate, if PTT is >not asserted, your relays will not close. All inputs to the AND gate must be >present for the output to change state. I've wanted this 'feature request' since K3 Day 1. Don's solution sounds like a reasonable work-around. Unfortunately, I'm transistorially challenged. Can I build this with a few 12AU7s ? Ralph, VE7XF __ 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] Feature request - Disable Break In on K3
Sure. Start here for vacuum tube logic: http://www.neazoi.com/technology/logic.htm wunder K6WRU On Aug 29, 2013, at 4:15 PM, Ralph Parker wrote: >> If you use Joe's solution where PTT is one input into an AND gate, if PTT is >> not asserted, your relays will not close. All inputs to the AND gate must be >> present for the output to change state. > > I've wanted this 'feature request' since K3 Day 1. > Don's solution sounds like a reasonable work-around. > Unfortunately, I'm transistorially challenged. > Can I build this with a few 12AU7s ? > > Ralph, VE7XF > > __ > 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 -- Walter Underwood wun...@wunderwood.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
Re: [Elecraft] Will the K2 and KX3 work with the P3?
Terry et al : Clifton Laboratories makes a product called the Z1B (http://www.cliftonlaboratories.com/k2_interface.htm) that will add a IF port to the K2 or Orion, suitable for use with the LP-PAN and P3. To get back to the original question, I am not sure how many people would want to add a P3 to a K2 ? For the price of the P3 (or even an LP-Pan) you could pick up a new Flex-1500. Michael VE3WMB >From: >Date: August 28, 2013 12:38:40 AM EDT >To: "Tom" , "Elecraft" >Subject: Re: [Elecraft] Will the K2 and KX3 work with the P3? >I'm not sure what you are trying to accomplish here with the KX3, pardon if I >mis-interpret. >Using a P3 requires that two issues be resolved: 1) control and, 2) RF signal >input. >P3 control is via the serial RS232 connection, and can be figured out. >However, the P3 wants to a single RF signal at its IF input. It then goes >through a typical DDC-based SDR approach, including an FFT, to display the >spectrum. The P3 works with the 8.215MHz IF output of >the K3 (or many other >RF-frequency range, IF signals). The KX3 does NOT have a single RF/IF output >at the proper frequency. Instead, it has an I/Q output pair at audio >frequencies (0Hz-approx 48kHz or >so) from the internal QSD. You would need >to upconvert that I/Q pair back to a single RF signal in order to feed it to >the P3. That's a lot of work, with much simpler solutions available. >I don't know much about the K2. Looking at the manual, internally, it has an >4.9152MHz IF, but I don't think that's available on a connector, or if the >drive level is buffered and adequate. If so, you could use a >P3 with a K2 I >suppose. The IF would need to be tapped BEFORE the crystal filtering. I do >NOT see an IF output connector, and only one transistor buffer between the >mixer and the crystal filters. >The KX3 I/Q output is set up to feed into a typical computer sound card >(stereo, line-in) and a Softrock SDR-type program, which is easier than trying >to jerry-rig a P3. You can potentially use a CAT interface >with the KX3 to >query the current frequency, for SDR software display. I have NOT one this >directly, so I don't know what SDR software support that. >73, Terry, WB4JFI __ 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] Will the K2 and KX3 work with the P3?
Yes, but it would -still- be a Flex-1500, not a K2 with panadapter... Bruce, N1RX > To get back to the original question, I am not sure how many people would > want to add a P3 to a K2 ? For the price of the P3 (or even an LP-Pan) you > could pick up a new Flex-1500. __ 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] Feature request - Disable Break In on K3
Certainly you could build it with 12AU7s, but more simply, a 74LS11 (or 74AC11) will do the job nicely. That has 3 3 input AND gates, and you need only one of the 3. If you chose that device, you will need inverters (74LS04) in addition because PTT is active low, and the inputs of the 74LS11 will AND with active high, so you may need to invert some inputs, and depending on what you are driving, you may have to invert the output of the AND gate. In addition, you may need some sort of a relay driver if the relays cannot be driven from a 5 volt logic source. A little study into logic devices may be in order - it is not complicated, you just have to "follow the rules". For the 74AC11, when all 3 inputs are at a high level, the output will be at a high level - if any of those inputs are at a low level, the output will also be low. High level for the 74LS family is a voltage of 2 volts or greater (up to 5 volts) and a voltage of 0.8 volts or lower for a "low" voltage. The "AC" family allows a greater range, but not as much noise immunity for voltage between the high and low thresholds. Joe suggested using a NOR gate which is a little different in that it will logically AND the inputs when they are *all* at a low level and the output will then be at a high level. Again, a little study of logic gates may be required for those not familiar with digital logic - they can do marvelous things if you want some conbination of signals o produce a specific output. 73, Don W3FPR On 8/29/2013 7:15 PM, Ralph Parker wrote: If you use Joe's solution where PTT is one input into an AND gate, if PTT is not asserted, your relays will not close. All inputs to the AND gate must be present for the output to change state. I've wanted this 'feature request' since K3 Day 1. Don's solution sounds like a reasonable work-around. Unfortunately, I'm transistorially challenged. Can I build this with a few 12AU7s ? Ralph, VE7XF __ 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] Will the K2 and KX3 work with the P3?
Michael, There are some who would want to do just that. I recently had a customer who wanted to use his LP-Pam or P3 with his K2; I added the Clifton Labs Z1-k2 for him. He already had the LP-Pan and the P3 available. Yes, if one does not have those devices available, the price of the Flex-1500 becomes attractive, but that may not satisfy all the customer's parameters. 73, Don W3FPR On 8/28/2013 7:36 PM, Michael Babineau wrote: Terry et al : Clifton Laboratories makes a product called the Z1B (http://www.cliftonlaboratories.com/k2_interface.htm) that will add a IF port to the K2 or Orion, suitable for use with the LP-PAN and P3. To get back to the original question, I am not sure how many people would want to add a P3 to a K2 ? For the price of the P3 (or even an LP-Pan) you could pick up a new Flex-1500. Michael VE3WMB From: Date: August 28, 2013 12:38:40 AM EDT To: "Tom" , "Elecraft" Subject: Re: [Elecraft] Will the K2 and KX3 work with the P3? I'm not sure what you are trying to accomplish here with the KX3, pardon if I mis-interpret. Using a P3 requires that two issues be resolved: 1) control and, 2) RF signal input. P3 control is via the serial RS232 connection, and can be figured out. However, the P3 wants to a single RF signal at its IF input. It then goes through a typical DDC-based SDR approach, including an FFT, to display the spectrum. The P3 works with the 8.215MHz IF output of >the K3 (or many other RF-frequency range, IF signals). The KX3 does NOT have a single RF/IF output at the proper frequency. Instead, it has an I/Q output pair at audio frequencies (0Hz-approx 48kHz or >so) from the internal QSD. You would need to upconvert that I/Q pair back to a single RF signal in order to feed it to the P3. That's a lot of work, with much simpler solutions available. I don't know much about the K2. Looking at the manual, internally, it has an 4.9152MHz IF, but I don't think that's available on a connector, or if the drive level is buffered and adequate. If so, you could use a >P3 with a K2 I suppose. The IF would need to be tapped BEFORE the crystal filtering. I do NOT see an IF output connector, and only one transistor buffer between the mixer and the crystal filters. The KX3 I/Q output is set up to feed into a typical computer sound card (stereo, line-in) and a Softrock SDR-type program, which is easier than trying to jerry-rig a P3. You can potentially use a CAT interface >with the KX3 to query the current frequency, for SDR software display. I have NOT one this directly, so I don't know what SDR software support that. 73, Terry, WB4JFI __ 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
[Elecraft] F.S. K3/100-F Transceiver
I have For Sale my Factory Assembled Elecraft K3/100-F. The K3/100-F is equipped as follows: (Serial Number: 7167) It is in Excellent Physical and Electrical Operating condition. (No marks or scratches of any kind. No Smoking Shack) KPA3 - Internal 100 Watt Amplifier Module KAT3 - Wide Range 100 Watt Internal Automatic Antenna Tuner KFLA3A-2.7K, 5-Pole, 2.7 kHz Roofing Filter MH2 - Elecraft Microphone Also Included are the following items: Elecraft K3 Owner’s Manual “The Elecraft K3 Design, Configuration, and Operation” Manual Second Edition by Fred Cady – KE7X Elecraft K3 Power Cable With/Powerpole Connectors Allen Wrenches for Knobs, etc. Original Elecraft Box The Price Shipped and Insured to Lower 48 is: $2,200.00. My PayPAL address for payment is: cwmor...@pa.net Thanks for your consideration! 73, Carl Morris, WN3DUG Fayetteville, PA Email: cwmor...@pa.net Telephone: 717-977-3231 __ 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] Feature request - Disable Break In on K3
Ralph, I was raised with vacuum tubes. My first receiver used three type 76 triodes. In school I learned to design with tubes, plot their characteristics and so forth. I homebrewed a lot of transmitters and receivers using vacuum tubes as Ham and I serviced a lot of vacuum tube gear in my work. And then after just a couple of years working as an Technical writer (all engineering in those pre-computer days) I found myself looking at schematics of transistors. Now, by then, I had read many books on transistors - all about holes and carriers (in junction devices) - but they still confused me. So, one day, I bought several devices, dug some pots out of my junk box along with a few batteries for power and started bread-boarding transistor circuits. It was only a few hours before the "AHA!" moment that had me watching how the collector or drain current varied with the base current or gate voltages. That was about 1960 and I was hooked on solid state. That was before integrated circuits. Oh, there was some TTL around, but most of the stuff I wrote circuit descriptions for were things like J-K flip-flops made out of junction transistors. I still mess with tubes occasionally. I love watching the filaments come up to temperature and the smell of hot glass. But solid state is something that can be bread-boarded in minutes with no need to wire filaments. Many of my breadboards are no board at all, just a big ball of components wired together in a sort of "rat's nest" of components. That works great for low frequency and audio stuff. As long as you are breathing you are young enough to learn and enjoy new things. Give it a shot! You might discover a world of fun! 73, Ron AC7AC -Original Message- On Aug 29, 2013, at 4:15 PM, Ralph Parker wrote: >> If you use Joe's solution where PTT is one input into an AND gate, if >> PTT is not asserted, your relays will not close. All inputs to the >> AND gate must be present for the output to change state. > > I've wanted this 'feature request' since K3 Day 1. > Don's solution sounds like a reasonable work-around. > Unfortunately, I'm transistorially challenged. > Can I build this with a few 12AU7s ? > > Ralph, VE7XF __ 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] [K3] ERR DSE message
I have suddenly started to get an intermittent ERR DSE message on my K3 - the main display shows E0401E2. It occurs about once a day on average I guess. I have reloaded the DSP firmware as recommended but it has not cured this problem. I recently added a P3 with P3SVGA - it is all working fine. The power for the P3 is not taken from the K3. However the error has only started since the P3 was added, so I suspect something to do with this. The obvious change to the K3 is a change from 9,600 Bd to 38,400 for the P3. The PC, SteppIR controller and SPE 1K-FA all run at 9,600 and connect to the P3 PC connector. It all seems ok. Has anyone else seen this? I would appreciate any help. However I will not be able to try any fixes for a couple of weeks as I am away, but will be watching the reflector for any suggestions. 73 Phil Holliday ZL3PAH __ 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
