Re: [Elecraft] K3 Bootup sequence?
Vic, Yes, a better way would be using a diode thru a switch to ground. In my diagrams the 1K resistor probably should be retained so the diode does not draw excessive current when grounded (not needed if you use the 2.2K to 10K dropping resistor in place of the 5v regulator) In my circuits a relay (shown as K4 "TX2 SEQ Stage") in my sequencer grounds the diode. This enables the transmitter after all preamps, TR relays, and other transmitting equipment have been switched into "transmit mode". I only use inhibit on 6m and above bands and this is to avoid hot switching my eme QRO equipment. The VOX/AUTO-OFF is probably more convenient to avoid RS232 start up keying. No extra circuitry needed. 73, Ed - KL7UW From: Vic K2VCO To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 Bootup sequence? Message-ID: <51ca2cc7.60...@gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed If you do this, make sure that when you remove the 5v pin 7 is either grounded directly or via a resistor. if you let it float, it may inhibit output in that condition. Yes, I see that Ed didn't do that in his schematic -- maybe it's rig-dependent, but I've had this problem. 73, Ed - KL7UW http://www.kl7uw.com dubus...@gmail.com "Kits made by KL7UW" __ 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] K3 Bootup sequence?
If you do this, make sure that when you remove the 5v pin 7 is either grounded directly or via a resistor. if you let it float, it may inhibit output in that condition. Yes, I see that Ed didn't do that in his schematic -- maybe it's rig-dependent, but I've had this problem. On 6/25/2013 10:46 AM, Edward R Cole wrote: One other way to prevent the K3 from transmitting (it will still key but with no RF output). Apply 5v to pin-7 of the ACC after placing TX INH set to HI in the CONFIG menu. Remove the 5v and the radio will function normally. http://www.kl7uw.com/TX-INHIBIT.htm shows how to use inhibit on VHF bands but not on HF. A simple modification could be done where the relay is replaced by a toggle switch and eliminate the transistor and BAND and DIGOUT circuitry. The voltage regulator, 1K resistor, and diode are not needed and can be replaced with a 2.2K to 10K resistor (K3 manual, page 19) connected to 12v thru a toggle switch. I just boot my computer before powering up the K3 (I am not using the LP Bridge). 73, Ed - KL7UW http://www.kl7uw.com dubus...@gmail.com "Kits made by KL7UW" -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ 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] K3 Bootup sequence?
One other way to prevent the K3 from transmitting (it will still key but with no RF output). Apply 5v to pin-7 of the ACC after placing TX INH set to HI in the CONFIG menu. Remove the 5v and the radio will function normally. http://www.kl7uw.com/TX-INHIBIT.htm shows how to use inhibit on VHF bands but not on HF. A simple modification could be done where the relay is replaced by a toggle switch and eliminate the transistor and BAND and DIGOUT circuitry. The voltage regulator, 1K resistor, and diode are not needed and can be replaced with a 2.2K to 10K resistor (K3 manual, page 19) connected to 12v thru a toggle switch. I just boot my computer before powering up the K3 (I am not using the LP Bridge). 73, Ed - KL7UW http://www.kl7uw.com dubus...@gmail.com "Kits made by KL7UW" __ 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] K3 Bootup sequence?
The selection to which Fred refers was added by Wayne to the K3 menu at my request on the grounds that, as originally designed, the K3 could start transmitting at full power to the surprise of someone who innocently turned a computer ON while it was attached to a K3 and that, to me, was a safety issue. My suggestion was based on my first use of K3 #95 at a Field Day where that exact situation occurred. Fortunately no test equipment was fried nor did the radio transmit into an un-terminated RF output or cause difficulties to the folks who were connecting the antenna at that point in time. Maybe it's my aerospace background but to me, a transmitter should not transmit unless one specifically and consciously and knowledgeably commands it to transmit by making some sort of enabling selection on the transmitter :) I always smile a little when I hear the distinct sequence of K3 keying tones while tuning around on HF. Another K3 is on the air! 73, Gary VE1RGB -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Cady, Fred Sent: June-25-13 12:39 PM To: 'Elecraft Reflector' Subject: Re: [Elecraft] K3 Bootup sequence? The other thing you can do is to go into the CW WGHT menu, tap the 4 key and select VOX AUTOOFF. This turns VOX off when you turn the radio off and so the PC won't key the radio while it (the PC) is booting up. You have to push VOX to turn it back on, which is a bit of a pain, but I put a message in the banner message telling me to do this. This only works if you turn the K3 off and then back on before booting up the PC. Cheers and 73, Fred Fred Cady www.ke7x.com fcady at ieee dot org > -Original Message- > From: elecraft-boun...@mailman.qth.net [mailto:elecraft- > boun...@mailman.qth.net] On Behalf Of Don Wilhelm > Sent: Tuesday, June 25, 2013 9:28 AM > To: F5vjc > Cc: Elecraft Reflector > Subject: Re: [Elecraft] K3 Bootup sequence? > > If you are using DTR and/or RTS for PTT or keying, that will happen as > the OS tests the serial ports. > If you do not need that keying, turn it off in the K3 menu. > If you do need it, I would suggest putting a DB-9 A/B switch in the > serial line. Turn it to break the connection to the K3 during the PC > bootup cycle. > > 73, > Don W3FPR > > On 6/25/2013 11:16 AM, F5vjc wrote: > > When booting up my PC connected to the K3 it keys the TX several > times > > during the bootup sequence, I imagine when initialising the various > > comports. I need to power up the K3 first before PC boot as I have > added LP > > Bridge to my PC auto start program list and it wants to see the K3 > > to enable the connect port. > > > > Is there a way to auto inhibit TX keying during PC bootup ( eg. > placing the > > TX into TEST mode)? > > > > I believe there must be a way but can't find it as yet. > > > > Thanks, 73 F5VJC > > > > __ > 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] K3 Bootup sequence?
Thanks to all who responded. Fred has the answer for me, select VOX AUTOOFF (I actually thought I had this mode selected but apparently not) Anyway this works great, thanks Fred. If you forget VOX is in AUTOOFF the first CW key press gives a reminder in VFO B, VFO=OFF, but not subsequent key presses only the first. This is is fine for me. 73 All, Deni F5VJC On 25 June 2013 17:38, Cady, Fred wrote: > The other thing you can do is to go into the CW WGHT menu, tap the 4 key > and select VOX AUTOOFF. This turns VOX off when you turn the radio off and > so the PC won't key the radio while it (the PC) is booting up. You have to > push VOX to turn it back on, which is a bit of a pain, but I put a message > in the banner message telling me to do this. This only works if you turn > the K3 off and then back on before booting up the PC. > Cheers and 73, > Fred > > > Fred Cady > www.ke7x.com > fcady at ieee dot org > > > -Original Message- > > From: elecraft-boun...@mailman.qth.net [mailto:elecraft- > > boun...@mailman.qth.net] On Behalf Of Don Wilhelm > > Sent: Tuesday, June 25, 2013 9:28 AM > > To: F5vjc > > Cc: Elecraft Reflector > > Subject: Re: [Elecraft] K3 Bootup sequence? > > > > If you are using DTR and/or RTS for PTT or keying, that will happen as > > the OS tests the serial ports. > > If you do not need that keying, turn it off in the K3 menu. > > If you do need it, I would suggest putting a DB-9 A/B switch in the > > serial line. Turn it to break the connection to the K3 during the PC > > bootup cycle. > > > > 73, > > Don W3FPR > > > > On 6/25/2013 11:16 AM, F5vjc wrote: > > > When booting up my PC connected to the K3 it keys the TX several > > times > > > during the bootup sequence, I imagine when initialising the various > > > comports. I need to power up the K3 first before PC boot as I have > > added LP > > > Bridge to my PC auto start program list and it wants to see the K3 to > > > enable the connect port. > > > > > > Is there a way to auto inhibit TX keying during PC bootup ( eg. > > placing the > > > TX into TEST mode)? > > > > > > I believe there must be a way but can't find it as yet. > > > > > > Thanks, 73 F5VJC > > > > > > > __ > > 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] K3 Bootup sequence?
It happens on my computer, with a real COM port. I used DTR keying and allowed the N1MM contest logger to generate CW for years, but finally gave up and got a Winkey USB device. I am happy I did -- the CW is cleaner, and I don't have to worry about accidentally keying the transmitter on boot-up. On 6/25/2013 8:30 AM, Matt Zilmer wrote: I've been using TX TEST for this purpose. Your K3 is probably set up to use DTR or RTS for keying. When the USB enumerator starts up, the first thing it does is reset all the hubs and endpoints, and this causes the serial adapter's DTR/RTS to become asserted, keying the K3. USB may be reset several times, resulting in TX cycles to match. The only other way of preventing this (that I know of) is to unplug the serial line at the adapter. This shouln't happen on a regular COM port, one that's integrated into the computer. I believe it will *always* happen if there's a USB/serial adapter in line. 73, matt W6NIA On Tue, 25 Jun 2013 17:16:16 +0200, you wrote: When booting up my PC connected to the K3 it keys the TX several times during the bootup sequence, I imagine when initialising the various comports. I need to power up the K3 first before PC boot as I have added LP Bridge to my PC auto start program list and it wants to see the K3 to enable the connect port. Is there a way to auto inhibit TX keying during PC bootup ( eg. placing the TX into TEST mode)? I believe there must be a way but can't find it as yet. Thanks, 73 F5VJC __ -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ 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] K3 Bootup sequence?
Hi Deni, This happens for me whenever I open WriteLog. I just switch my external antenna switch to the dummy load first. It transmits for a second but I don't care because it's transmitting into the dummy load. I don't like to use Test Mode because I forget to go back to live mode. I never forget to switch back to the antenna because I don't hear any stations when I'm on the dummy load. 73, Mike K2MK Deni F5VJC wrote > When booting up my PC connected to the K3 it keys the TX several times > during the bootup sequence, I imagine when initialising the various > comports. I need to power up the K3 first before PC boot as I have added > LP > Bridge to my PC auto start program list and it wants to see the K3 to > enable the connect port. > > Is there a way to auto inhibit TX keying during PC bootup ( eg. placing > the > TX into TEST mode)? > > I believe there must be a way but can't find it as yet. > > Thanks, 73 F5VJC -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Bootup-sequence-tp7575797p7575801.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] K3 Bootup sequence?
The other thing you can do is to go into the CW WGHT menu, tap the 4 key and select VOX AUTOOFF. This turns VOX off when you turn the radio off and so the PC won't key the radio while it (the PC) is booting up. You have to push VOX to turn it back on, which is a bit of a pain, but I put a message in the banner message telling me to do this. This only works if you turn the K3 off and then back on before booting up the PC. Cheers and 73, Fred Fred Cady www.ke7x.com fcady at ieee dot org > -Original Message- > From: elecraft-boun...@mailman.qth.net [mailto:elecraft- > boun...@mailman.qth.net] On Behalf Of Don Wilhelm > Sent: Tuesday, June 25, 2013 9:28 AM > To: F5vjc > Cc: Elecraft Reflector > Subject: Re: [Elecraft] K3 Bootup sequence? > > If you are using DTR and/or RTS for PTT or keying, that will happen as > the OS tests the serial ports. > If you do not need that keying, turn it off in the K3 menu. > If you do need it, I would suggest putting a DB-9 A/B switch in the > serial line. Turn it to break the connection to the K3 during the PC > bootup cycle. > > 73, > Don W3FPR > > On 6/25/2013 11:16 AM, F5vjc wrote: > > When booting up my PC connected to the K3 it keys the TX several > times > > during the bootup sequence, I imagine when initialising the various > > comports. I need to power up the K3 first before PC boot as I have > added LP > > Bridge to my PC auto start program list and it wants to see the K3 to > > enable the connect port. > > > > Is there a way to auto inhibit TX keying during PC bootup ( eg. > placing the > > TX into TEST mode)? > > > > I believe there must be a way but can't find it as yet. > > > > Thanks, 73 F5VJC > > > > __ > 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] K3 Bootup sequence?
I've been using TX TEST for this purpose. Your K3 is probably set up to use DTR or RTS for keying. When the USB enumerator starts up, the first thing it does is reset all the hubs and endpoints, and this causes the serial adapter's DTR/RTS to become asserted, keying the K3. USB may be reset several times, resulting in TX cycles to match. The only other way of preventing this (that I know of) is to unplug the serial line at the adapter. This shouln't happen on a regular COM port, one that's integrated into the computer. I believe it will *always* happen if there's a USB/serial adapter in line. 73, matt W6NIA On Tue, 25 Jun 2013 17:16:16 +0200, you wrote: >When booting up my PC connected to the K3 it keys the TX several times >during the bootup sequence, I imagine when initialising the various >comports. I need to power up the K3 first before PC boot as I have added LP >Bridge to my PC auto start program list and it wants to see the K3 to >enable the connect port. > >Is there a way to auto inhibit TX keying during PC bootup ( eg. placing the >TX into TEST mode)? > >I believe there must be a way but can't find it as yet. > >Thanks, 73 F5VJC >__ >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] K3 Bootup sequence?
If you are using DTR and/or RTS for PTT or keying, that will happen as the OS tests the serial ports. If you do not need that keying, turn it off in the K3 menu. If you do need it, I would suggest putting a DB-9 A/B switch in the serial line. Turn it to break the connection to the K3 during the PC bootup cycle. 73, Don W3FPR On 6/25/2013 11:16 AM, F5vjc wrote: When booting up my PC connected to the K3 it keys the TX several times during the bootup sequence, I imagine when initialising the various comports. I need to power up the K3 first before PC boot as I have added LP Bridge to my PC auto start program list and it wants to see the K3 to enable the connect port. Is there a way to auto inhibit TX keying during PC bootup ( eg. placing the TX into TEST mode)? I believe there must be a way but can't find it as yet. Thanks, 73 F5VJC __ 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 Bootup sequence?
When booting up my PC connected to the K3 it keys the TX several times during the bootup sequence, I imagine when initialising the various comports. I need to power up the K3 first before PC boot as I have added LP Bridge to my PC auto start program list and it wants to see the K3 to enable the connect port. Is there a way to auto inhibit TX keying during PC bootup ( eg. placing the TX into TEST mode)? I believe there must be a way but can't find it as yet. Thanks, 73 F5VJC __ 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
