Feature request - Disable Break In on K3
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Please can we have an option to disable break in. I nearly killed my microwave transverter tonight because of break in when I pressed the memory key button by mistake. CW QSK is too fast for and defeats the sequencing of the transverter.
Mike |
Re: Feature request - Disable Break In on K3
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>>>>> "AD6XY" == AD6XY <[hidden email]> writes:
AD6XY> Please can we have an option to disable break in. I nearly killed my AD6XY> microwave transverter tonight because of break in when I pressed the memory AD6XY> key button by mistake. CW QSK is too fast for and defeats the sequencing of AD6XY> the transverter. isn't that what the QSK button (long press on BAND-up) is for? -- Pierfrancesco Caci, ik5pvx ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Feature request - Disable Break In on K3
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In reply to this post by AD6XY
Hi Mike,
push for two second the "VOX" button (left side of band switch) will disable break in. Vy 73, Fausto IK4NMF ----- Original Message ----- From: "AD6XY" <[hidden email]> To: <[hidden email]> Sent: Tuesday, August 27, 2013 10:08 PM Subject: [Elecraft] Feature request - Disable Break In on K3 > Please can we have an option to disable break in. I nearly killed my > microwave transverter tonight because of break in when I pressed the > memory > key button by mistake. CW QSK is too fast for and defeats the sequencing > of > the transverter. > > Mike > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303.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:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > ----- > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2013.0.3392 / Database dei virus: 3211/6613 - Data di rilascio: > 27/08/2013 > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Feature request - Disable Break In on K3
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In reply to this post by AD6XY
Mike,
You may want to look into using TX INH on the K3 ACC connector - it does exactly that, waits for a signal from the sequencer that TX is now OK. 73, Don W3FPR On 8/27/2013 4:08 PM, AD6XY wrote: > Please can we have an option to disable break in. I nearly killed my > microwave transverter tonight because of break in when I pressed the memory > key button by mistake. CW QSK is too fast for and defeats the sequencing of > the transverter. > > Mike > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Pierfrancesco Caci
I wasn't aware of that feature - but all I can get is FULL or SEMI, no "Off". Turning off VOX to PTT still causes VOX to operate with the key - which is surely a bug?
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In reply to this post by Don Wilhelm-4
Hi Don,
That doesn't work too well because the PTT signal still bounces up and down setting off all the relays. My IC735 used to have a VOX delay which you could set to something long to prevent that - but unless I missed a menu I can't seem to find where you set the CW VOX hang time. Mike |
Re: Feature request - Disable Break In on K3
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In reply to this post by AD6XY
On Tue, Aug 27, 2013 at 2:41 PM, AD6XY <[hidden email]> wrote:
> I wasn't aware of that feature - but all I can get is FULL or SEMI, no "Off". > Turning off VOX to PTT still causes VOX to operate with the key - which is > surely a bug? Are you saying that with VOX off, and no external source of PTT, your K3 is going into transmit when you operate your key? i.e. you see the red TX LED light? 73, ~iain / N6ML ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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"Are you saying that with VOX off, and no external source of PTT, your
K3 is going into transmit when you operate your key? i.e. you see the red TX LED light? " Yes to the first, no to the second. To explain - in CW mode the K3 sends a PTT signal on the keying line whenever the key is down. It does not matter if it is a straight key or the memory, the PTT output is still active in sync with the sidetone. The radio does not transmit but that's hardly an issue in my case as its only putting out 1mW at ~28MHz. The problem is the PTT signal when moving rapidly causes a lot of relay chattering and bias supply switching, I have not tried it with my 24GHz which uses a rotating waveguide switch, but I am sure it wouldn't be good for it. In VOX mode with QSK I could understand this hapening, but when VOX is off, you wouldn't expect the key to activate the PTT signal. A way around that is to have a VOX hang, but that appears only to work on SSB. |
Re: Feature request - Disable Break In on K3
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In reply to this post by AD6XY
Mike,
I think you mean Keyout rather than PTT -- PTT is an input signal to the K3 generated by an external device such as a footswitch.. The use of TX INH does not prevent the Keyout signal from activating - it should click the relays and start your sequencer. BUT it does prevent RF from being transmitted which will protect your preamps and other things that need to be protected during the sequencer time. A typical sequencer will complete its cycle in a few tens of milliseconds. If you don't like the Keyout state changing with keying, use semi-break-in and set the delay to whatever time period you desire to keep the Keyout active between characters, words, etc. - that time will depend on your keying speed.. 73, Don W3FPR On 8/27/2013 5:44 PM, AD6XY wrote: > Hi Don, > > That doesn't work too well because the PTT signal still bounces up and down > setting off all the relays. My IC735 used to have a VOX delay which you > could set to something long to prevent that - but unless I missed a menu I > can't seem to find where you set the CW VOX hang time. > > Mike > > > > -- > View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578313.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:[hidden email] > > 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Feature request - Disable Break In on K3
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It does seem a bit lame that KEY OUT is activated when the K3 is not
transmitting. Maybe there should be an (optional) mode where the CW key inputs (including memory) are completely ignored when VOX is off and PTT is not asserted...... 73, ~iain / N6ML On Tue, Aug 27, 2013 at 3:13 PM, Don Wilhelm <[hidden email]> wrote: > Mike, > > I think you mean Keyout rather than PTT -- PTT is an input signal to the K3 > generated by an external device such as a footswitch.. > > The use of TX INH does not prevent the Keyout signal from activating - it > should click the relays and start your sequencer. BUT it does prevent RF > from being transmitted which will protect your preamps and other things that > need to be protected during the sequencer time. > A typical sequencer will complete its cycle in a few tens of milliseconds. > If you don't like the Keyout state changing with keying, use semi-break-in > and set the delay to whatever time period you desire to keep the Keyout > active between characters, words, etc. - that time will depend on your > keying speed.. > > 73, > Don W3FPR > > > On 8/27/2013 5:44 PM, AD6XY wrote: >> >> Hi Don, >> >> That doesn't work too well because the PTT signal still bounces up and >> down >> setting off all the relays. My IC735 used to have a VOX delay which you >> could set to something long to prevent that - but unless I missed a menu I >> can't seem to find where you set the CW VOX hang time. >> >> Mike >> >> >> >> -- >> View this message in context: >> http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578313.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:[hidden email] >> >> 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:[hidden email] > > 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Feature request - Disable Break In on K3
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In reply to this post by Don Wilhelm-4
Hi Mike,
> That doesn't work too well because the PTT signal still bounces up and > down > setting off all the relays. My IC735 used to have a VOX delay which you > could set to something long to prevent that - but unless I missed a menu I > can't seem to find where you set the CW VOX hang time. Semi-break-in delay, see manual page 14 (at least in mine, might be +/- in newer versions). It's the second function of the speed knob. 73, Olli - DH8BQA ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Feature request - Disable Break In on K3
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In reply to this post by Iain MacDonnell - N6ML-2
Iain,
That operation was tossed about at great length during the early K3 Firmware Field Test. I forget all the details, but the current operation was the consensus at the time. If one is using a sequencer with an external input into the K3 PTT, the sequencer should start activation with the PTT switch, not Keyout. Changing his sequencer input should resolve the problem, although he may want to use TX INH in additon to allow RF only when the sequencer has finished. That solution allows normal QSK on HF and protection when using transverters and/or preamps that must be protected on VHF/UHF. 73, Don W3FPR On 8/27/2013 6:19 PM, iain macdonnell - N6ML wrote: > It does seem a bit lame that KEY OUT is activated when the K3 is not > transmitting. Maybe there should be an (optional) mode where the CW > key inputs (including memory) are completely ignored when VOX is off > and PTT is not asserted...... > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Feature request - Disable Break In on K3
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In reply to this post by Iain MacDonnell - N6ML-2
It would be interesting to learn under what practical circumstances
someone might offer that the current arrangement is a desired mode. I can't think of any, however, that could just be lack of imagination on my part. Until convinced otherwise my vote is with N6ML. CW mode, VOX off, no PTT = no Key Out. Regards, Mike VP8NO On 27/08/2013 19:19, iain macdonnell - N6ML wrote: > It does seem a bit lame that KEY OUT is activated when the K3 is not > transmitting. Maybe there should be an (optional) mode where the CW > key inputs (including memory) are completely ignored when VOX is off > and PTT is not asserted...... > > 73, > > ~iain / N6ML > > > > On Tue, Aug 27, 2013 at 3:13 PM, Don Wilhelm <[hidden email]> wrote: >> Mike, >> >> I think you mean Keyout rather than PTT -- PTT is an input signal to the K3 >> generated by an external device such as a footswitch.. >> >> The use of TX INH does not prevent the Keyout signal from activating - it >> should click the relays and start your sequencer. BUT it does prevent RF >> from being transmitted which will protect your preamps and other things that >> need to be protected during the sequencer time. >> A typical sequencer will complete its cycle in a few tens of milliseconds. >> If you don't like the Keyout state changing with keying, use semi-break-in >> and set the delay to whatever time period you desire to keep the Keyout >> active between characters, words, etc. - that time will depend on your >> keying speed.. >> >> 73, >> Don W3FPR >> >> >> On 8/27/2013 5:44 PM, AD6XY wrote: >>> >>> Hi Don, >>> >>> That doesn't work too well because the PTT signal still bounces up and >>> down >>> setting off all the relays. My IC735 used to have a VOX delay which you >>> could set to something long to prevent that - but unless I missed a menu I >>> can't seem to find where you set the CW VOX hang time. >>> >>> Mike Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Feature request - Disable Break In on K3
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Hi Mike,
if You open some mail-archive You can see a lot of mails concerning this behaviour (recognized as strange by some of us) from the first days of K3. There is probably no way for solution. So if You have key activated You have a Key Out activated. There is no real PTT out. Probably this was not recognized in design period as a real need and nobody count with some of us with more complex systems with VHF/UHF transvertors, premplifiers and a lot of relays around :-( Yes, there is no RF and You have Inhibit port. But ..... 73! Lexa, ok1dst ---------- Původní zpráva ---------- Od: Mike Harris <[hidden email]> Datum: 28. 8. 2013 Předmět: Re: [Elecraft] Feature request - Disable Break In on K3 "It would be interesting to learn under what practical circumstances someone might offer that the current arrangement is a desired mode. I can't think of any, however, that could just be lack of imagination on my part. Until convinced otherwise my vote is with N6ML. CW mode, VOX off, no PTT = no Key Out. Regards, Mike VP8NO On 27/08/2013 19:19, iain macdonnell - N6ML wrote: > It does seem a bit lame that KEY OUT is activated when the K3 is not > transmitting. Maybe there should be an (optional) mode where the CW > key inputs (including memory) are completely ignored when VOX is off > and PTT is not asserted...... > > 73, > > ~iain / N6ML > > > > On Tue, Aug 27, 2013 at 3:13 PM, Don Wilhelm <[hidden email]> wrote: >> Mike, >> >> I think you mean Keyout rather than PTT -- PTT is an input signal to the >> generated by an external device such as a footswitch.. >> >> The use of TX INH does not prevent the Keyout signal from activating - it >> should click the relays and start your sequencer. BUT it does prevent RF >> from being transmitted which will protect your preamps and other things that >> need to be protected during the sequencer time. >> A typical sequencer will complete its cycle in a few tens of milliseconds. >> If you don't like the Keyout state changing with keying, use semi-break- in >> and set the delay to whatever time period you desire to keep the Keyout >> active between characters, words, etc. - that time will depend on your >> keying speed.. >> >> 73, >> Don W3FPR >> >> >> On 8/27/2013 5:44 PM, AD6XY wrote: >>> >>> Hi Don, >>> >>> That doesn't work too well because the PTT signal still bounces up and >>> down >>> setting off all the relays. My IC735 used to have a VOX delay which you >>> could set to something long to prevent that - but unless I missed a menu >>> can't seem to find where you set the CW VOX hang time. >>> >>> Mike ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Feature request - Disable Break In on K3
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In reply to this post by Mike Harris-9
Yes and it has been quite disturbing that a K3 locked with TXinh still
behaves (or "looks") like it´s transmitting, although there is no power output. 73, Win DK9IP Am 28.08.2013 00:52, schrieb Mike Harris: > It would be interesting to learn under what practical circumstances > someone might offer that the current arrangement is a desired mode. I > can't think of any, however, that could just be lack of imagination on > my part. > > Until convinced otherwise my vote is with N6ML. CW mode, VOX off, no PTT > = no Key Out. > > Regards, > > Mike VP8NO > > On 27/08/2013 19:19, iain macdonnell - N6ML wrote: >> It does seem a bit lame that KEY OUT is activated when the K3 is not >> transmitting. Maybe there should be an (optional) mode where the CW >> key inputs (including memory) are completely ignored when VOX is off >> and PTT is not asserted...... >> >> 73, >> >> ~iain / N6ML >> >> >> >> On Tue, Aug 27, 2013 at 3:13 PM, Don Wilhelm <[hidden email]> >> wrote: >>> Mike, >>> >>> I think you mean Keyout rather than PTT -- PTT is an input signal to >>> the K3 >>> generated by an external device such as a footswitch.. >>> >>> The use of TX INH does not prevent the Keyout signal from activating >>> - it >>> should click the relays and start your sequencer. BUT it does prevent RF >>> from being transmitted which will protect your preamps and other >>> things that >>> need to be protected during the sequencer time. >>> A typical sequencer will complete its cycle in a few tens of >>> milliseconds. >>> If you don't like the Keyout state changing with keying, use >>> semi-break-in >>> and set the delay to whatever time period you desire to keep the Keyout >>> active between characters, words, etc. - that time will depend on your >>> keying speed.. >>> >>> 73, >>> Don W3FPR >>> >>> >>> On 8/27/2013 5:44 PM, AD6XY wrote: >>>> >>>> Hi Don, >>>> >>>> That doesn't work too well because the PTT signal still bounces up and >>>> down >>>> setting off all the relays. My IC735 used to have a VOX delay which you >>>> could set to something long to prevent that - but unless I missed a >>>> menu I >>>> can't seem to find where you set the CW VOX hang time. >>>> >>>> Mike > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Feature request - Disable Break In on K3
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In reply to this post by Mike Harris-9
Mike,
I cannot remember all the details in the original discussions, but I am "with you".. I was outvoted. OTOH, if one is using KEYOUT to initiate the sequencer, if KEYOUT does not become active until PTT is asserted, then there is a "cause and effect" problem - the sequencer will not start until PTT is asserted (because it is started with the KEYOUT signal) and further delays (requiring the use of TX INH) will be introduced. The solution is to start the sequencer with the onset of PTT (from the PTT footswitch or other switch) rather than using the K3 KEYOUT, and use TX INH to inhibit RF until the sequencer completes its cycle. That solution eliminates the "chattering relays" situation, and does not cause other problems. 73, Don W3FPR On 8/27/2013 6:52 PM, Mike Harris wrote: > It would be interesting to learn under what practical circumstances > someone might offer that the current arrangement is a desired mode. I > can't think of any, however, that could just be lack of imagination on > my part. > > Until convinced otherwise my vote is with N6ML. CW mode, VOX off, no > PTT = no Key Out. > > Regards, > > Mike VP8NO > > On 27/08/2013 19:19, iain macdonnell - N6ML wrote: >> It does seem a bit lame that KEY OUT is activated when the K3 is not >> transmitting. Maybe there should be an (optional) mode where the CW >> key inputs (including memory) are completely ignored when VOX is off >> and PTT is not asserted...... >> >> 73, >> >> ~iain / N6ML >> >> >> >> On Tue, Aug 27, 2013 at 3:13 PM, Don Wilhelm <[hidden email]> >> wrote: >>> Mike, >>> >>> I think you mean Keyout rather than PTT -- PTT is an input signal to >>> the K3 >>> generated by an external device such as a footswitch.. >>> >>> The use of TX INH does not prevent the Keyout signal from activating >>> - it >>> should click the relays and start your sequencer. BUT it does >>> prevent RF >>> from being transmitted which will protect your preamps and other >>> things that >>> need to be protected during the sequencer time. >>> A typical sequencer will complete its cycle in a few tens of >>> milliseconds. >>> If you don't like the Keyout state changing with keying, use >>> semi-break-in >>> and set the delay to whatever time period you desire to keep the Keyout >>> active between characters, words, etc. - that time will depend on your >>> keying speed.. >>> >>> 73, >>> Don W3FPR >>> >>> >>> On 8/27/2013 5:44 PM, AD6XY wrote: >>>> >>>> Hi Don, >>>> >>>> That doesn't work too well because the PTT signal still bounces up and >>>> down >>>> setting off all the relays. My IC735 used to have a VOX delay which >>>> you >>>> could set to something long to prevent that - but unless I missed a >>>> menu I >>>> can't seem to find where you set the CW VOX hang time. >>>> >>>> Mike > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Feature request - Disable Break In on K3
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In reply to this post by AD6XY
Interesting discussion. I use KEY-OUT to control my sequencer so my
mic or KEY function just like they do on HF. I utilize INH to prevent RF until the proper time in sequence of change over from Rx to Tx. BUT, I do not do very much CW on VHF+ with my KEY. Most CW is computer "keyboard" generated so the sw generates a RTS command over RS232 to Key the K3 PTT. This is definitely semi break-in, where the radio is held in Tx as long as CW characters are running in the computer buffer. This will be an issue if I send CW manually. Looks to me adding a manual PTT switch which keys PTT on the K3 would be the solution (could be a foot switch or toggle switch on the control panel). I assume I would not need to switch off VOX as the PTT input would overide the VOX. Is that true? I try to configure my station to work nearly automatically when I change over from HF to VHF+ so mistakes do not happen. Thanks to the originator of this quesion. 73, Ed - KL7UW http://www.kl7uw.com [hidden email] "Kits made by KL7UW" ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Edward R Cole
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 |
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In reply to this post by ok1rr
It already is.
And it is disabled in Data modes. ...bill nr4c Sent from my Verizon Wireless 4G LTE DROID Martin Kratoska <[hidden email]> 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:[hidden email] > >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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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