Re: [Elecraft] K3 - no output power

[Harald Fritzsche]

Hello Chris, all,

According to your current consumption the 10w PA driver is working, but KPA3 
gets no input or has not 12V.
Check CB1 CKT BKR (KPA3 page 1 of 2 in K3 schematics) and check if TR-Switch 
gets plausible voltages (KPA3 page 2 of 2, 7R and 7T).

Since there is no plausible idle current from KPA3 the CB1 seems to be defect, 
most likely.
Not sure if this can happen.
Or give me a call, # sent separetly.
Vy73
Harald
DD0VS

.-.-. --... ...-- -.. -.. - ...- ...

> Am 25.03.2021 um 05:35 schrieb Christian Janssen DL1MGB :
> 
> I am not sure if there is a frequency shown when in TUNE mode. My memories 
> tell me that the top line shows the SWR and the bottom line shows the power.
> 
> 73s Chris
> 
> 
> 
>> Am 24.03.2021 um 21:32 schrieb Harald Fritzsche (DD0VS):
>> Hello Chris,
>> 
>>  
>> 
>> strange is, that your Display does not show a frequency, but it should.
>> 
>>  
>> 
>> I had a water Intrusion in 2019 which causes several defects.
>> 
>> I was testing along the Signal path to see the Signal (with RSP-spectrum 
>> analyzer), that helped me, to find the defects. It tooks a while also with 
>> help of the list here.
>> 
>>  
>> 
>> Receiving is working?
>> 
>>  
>> 
>> Vy73 & GL
>> 
>> Harald
>> 
>> DD0VS
>> 
>>  
>> 
>>  
>> 
>>  
>> 
>> Gesendet von Mail  für 
>> Windows 10
>> 
>>  
>> 
>> *Von: *Christian Janssen DL1MGB 
>> *Gesendet: *Mittwoch, 24. März 2021 21:05
>> *An: *elecraft@mailman.qth.net 
>> *Betreff: *[Elecraft] K3 - no output power
>> 
>>  
>> 
>> Hello,
>> 
>>  
>> 
>> it happened during the Russian DX Contest last Saturday, from one second to 
>> another. No output. When I tune the display looks like this: 
>> http://dl1mgb.com/temp/k3_no_power.jpg
>> 
>>  
>> 
>> Following conditions:
>> 
>>  
>> 
>> - sending into a 50 ohm dummy load
>> 
>> - no matter how many watts are set with PWR knob
>> 
>> - Test mode off
>> 
>> - TX INH off
>> 
>> - all driver transistors working (three screw test)
>> 
>> - no output power also on external watt meter
>> 
>> - happens on all bands
>> 
>> - happens with KPA set to "not inst"
>> 
>> - knocking on housing doesn't change anything
>> 
>> - when starting the antenna tuner, it says 5.0 watts, but no output on the 
>> external watt meter
>> 
>>  
>> 
>> I am running out of ideas :-)
>> 
>>  
>> 
>> 73s Chris DL1MGB
>> 
>> __
>> 
>> 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
>> 
>> Message delivered to dd...@gmx.de
>> 
>>  
>> 
> __
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Re: [Elecraft] K3 - no output power

[Christian Janssen DL1MGB]

I am not sure if there is a frequency shown when in TUNE mode. My memories tell 
me that the top line shows the SWR and the bottom line shows the power.

73s Chris



Am 24.03.2021 um 21:32 schrieb Harald Fritzsche (DD0VS):
> Hello Chris,
> 
>  
> 
> strange is, that your Display does not show a frequency, but it should.
> 
>  
> 
> I had a water Intrusion in 2019 which causes several defects.
> 
> I was testing along the Signal path to see the Signal (with RSP-spectrum 
> analyzer), that helped me, to find the defects. It tooks a while also with 
> help of the list here.
> 
>  
> 
> Receiving is working?
> 
>  
> 
> Vy73 & GL
> 
> Harald
> 
> DD0VS
> 
>  
> 
>  
> 
>  
> 
> Gesendet von Mail  für 
> Windows 10
> 
>  
> 
> *Von: *Christian Janssen DL1MGB 
> *Gesendet: *Mittwoch, 24. März 2021 21:05
> *An: *elecraft@mailman.qth.net 
> *Betreff: *[Elecraft] K3 - no output power
> 
>  
> 
> Hello,
> 
>  
> 
> it happened during the Russian DX Contest last Saturday, from one second to 
> another. No output. When I tune the display looks like this: 
> http://dl1mgb.com/temp/k3_no_power.jpg
> 
>  
> 
> Following conditions:
> 
>  
> 
> - sending into a 50 ohm dummy load
> 
> - no matter how many watts are set with PWR knob
> 
> - Test mode off
> 
> - TX INH off
> 
> - all driver transistors working (three screw test)
> 
> - no output power also on external watt meter
> 
> - happens on all bands
> 
> - happens with KPA set to "not inst"
> 
> - knocking on housing doesn't change anything
> 
> - when starting the antenna tuner, it says 5.0 watts, but no output on the 
> external watt meter
> 
>  
> 
> I am running out of ideas :-)
> 
>  
> 
> 73s Chris DL1MGB
> 
> __
> 
> 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
> 
> Message delivered to dd...@gmx.de
> 
>  
> 
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Re: [Elecraft] K3 - no output power

[Christian Janssen DL1MGB]

Update:

- reseted all TMP connectors
- already changed the pin headers at the KPA3 (had the 12V ERR some months 
ago), since then radio was good for some hundred QSOs
- no transverter available
- serial number is 1532
- K3 receives without any problems
- uploaded the newest firmware

No change.

I don't have a spectrum analyzer, but I will look with my eyes if there is 
something noticeable.

73s Chris DL1MGB


Am 25.03.2021 um 02:35 schrieb Ray:
>  
> 
>  
> 
> Harald
> 
> I think you need to start at Ground Zero,,
> 
> Go to your Elecraft Utility
> 
> And connect to the K3 Radio and verify
> 
> The Firmware is present (05.67 ect)
> 
> I would go to the Basic mode of operations.
> 
> Set K3 to SSB operation Upper or  Lower , Freq middle of band.
> 
> Set radio to PTT (not VOX) Ant 1, load to Ant 1.
> 
> Verify on K3 DVM , voltage is 13 volts.
> 
> Push Tune button (long for TX – with RF)
> 
> Adjust PWR knob Clockwise for Max RF power.
> 
> Take readings………. Ray WA6VAB  K3  
> 
>  
> 
> *From: *Christian Janssen DL1MGB 
> *Sent: *Wednesday, March 24, 2021 1:49 PM
> *To: *Harald Fritzsche (DD0VS) ; 
> elecraft@mailman.qth.net 
> *Subject: *Re: [Elecraft] K3 - no output power
> 
>  
> 
> Hi Harald,
> 
>  
> 
> spectrum analyzer and more space on the table would be the best, but both not 
> available :-)
> 
>  
> 
> Additional information:
> 
> - internal voltage / current (DISP)
> 
>  
> 
> Standby: 13.8 V / 0.86 A
> 
> Tune: 13.4 V / 3.20 A
> 
>  
> 
> And still no power output on the external wattmeter.
> 
>  
> 
> It seems that there is something produced, but it doesn't exit the K3.
> 
>  
> 
> I also did an EE INIT, ut no change.
> 
>  
> 
> 73s Chris
> 
>  
> 
>  
> 
>  
> 
> Am 24.03.2021 um 21:32 schrieb Harald Fritzsche (DD0VS):
> 
>> Hello Chris,
> 
>>
> 
>>  
> 
>>
> 
>> strange is, that your Display does not show a frequency, but it should.
> 
>>
> 
>>  
> 
>>
> 
>> I had a water Intrusion in 2019 which causes several defects.
> 
>>
> 
>> I was testing along the Signal path to see the Signal (with RSP-spectrum 
>> analyzer), that helped me, to find the defects. It tooks a while also with 
>> help of the list here.
> 
>>
> 
>>  
> 
>>
> 
>> Receiving is working?
> 
>>
> 
>>  
> 
>>
> 
>> Vy73 & GL
> 
>>
> 
>> Harald
> 
>>
> 
>> DD0VS
> 
>>
> 
>>  
> 
>>
> 
>>  
> 
>>
> 
>>  
> 
>>
> 
>> Gesendet von Mail  für 
>> Windows 10
> 
>>
> 
>>  
> 
>>
> 
>> *Von: *Christian Janssen DL1MGB 
> 
>> *Gesendet: *Mittwoch, 24. März 2021 21:05
> 
>> *An: *elecraft@mailman.qth.net 
> 
>> *Betreff: *[Elecraft] K3 - no output power
> 
>>
> 
>>  
> 
>>
> 
>> Hello,
> 
>>
> 
>>  
> 
>>
> 
>> it happened during the Russian DX Contest last Saturday, from one second to 
>> another. No output. When I tune the display looks like this: 
>> http://dl1mgb.com/temp/k3_no_power.jpg
> 
>>
> 
>>  
> 
>>
> 
>> Following conditions:
> 
>>
> 
>>  
> 
>>
> 
>> - sending into a 50 ohm dummy load
> 
>>
> 
>> - no matter how many watts are set with PWR knob
> 
>>
> 
>> - Test mode off
> 
>>
> 
>> - TX INH off
> 
>>
> 
>> - all driver transistors working (three screw test)
> 
>>
> 
>> - no output power also on external watt meter
> 
>>
> 
>> - happens on all bands
> 
>>
> 
>> - happens with KPA set to "not inst"
> 
>>
> 
>> - knocking on housing doesn't change anything
> 
>>
> 
>> - when starting the antenna tuner, it says 5.0 watts, but no output on the 
>> external watt meter
> 
>>
> 
>>  
> 
>>
> 
>> I am running out of ideas :-)
> 
>>
> 
>>  
> 
>>
> 
>> 73s Chris DL1MGB
> 
>>
> 
>> __
> 
>>
> 
>> 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
> 
>>
> 
>> Message delivered to dd...@gmx.de
> 
>>
> 
>>  
> 
>>
> 
> __
> 
> 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
> 
> Message delivered to wa6...@gmail.com
> 
>  
> 
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Re: [Elecraft] K3 - no output power

[Ray]

Harald
I think you need to start at Ground Zero,,
Go to your Elecraft Utility
And connect to the K3 Radio and verify
The Firmware is present (05.67 ect)
I would go to the Basic mode of operations.
Set K3 to SSB operation Upper or  Lower , Freq middle of band. 
Set radio to PTT (not VOX) Ant 1, load to Ant 1.
Verify on K3 DVM , voltage is 13 volts.
Push Tune button (long for TX – with RF)
Adjust PWR knob Clockwise for Max RF power.
Take readings………. Ray WA6VAB  K3  

From: Christian Janssen DL1MGB
Sent: Wednesday, March 24, 2021 1:49 PM
To: Harald Fritzsche (DD0VS); elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 - no output power

Hi Harald,

spectrum analyzer and more space on the table would be the best, but both not 
available :-)

Additional information:
- internal voltage / current (DISP)
  
Standby: 13.8 V / 0.86 A
Tune: 13.4 V / 3.20 A

And still no power output on the external wattmeter.

It seems that there is something produced, but it doesn't exit the K3.

I also did an EE INIT, ut no change.

73s Chris



Am 24.03.2021 um 21:32 schrieb Harald Fritzsche (DD0VS):
> Hello Chris,
> 
>  
> 
> strange is, that your Display does not show a frequency, but it should.
> 
>  
> 
> I had a water Intrusion in 2019 which causes several defects.
> 
> I was testing along the Signal path to see the Signal (with RSP-spectrum 
> analyzer), that helped me, to find the defects. It tooks a while also with 
> help of the list here.
> 
>  
> 
> Receiving is working?
> 
>  
> 
> Vy73 & GL
> 
> Harald
> 
> DD0VS
> 
>  
> 
>  
> 
>  
> 
> Gesendet von Mail  für 
> Windows 10
> 
>  
> 
> *Von: *Christian Janssen DL1MGB 
> *Gesendet: *Mittwoch, 24. März 2021 21:05
> *An: *elecraft@mailman.qth.net 
> *Betreff: *[Elecraft] K3 - no output power
> 
>  
> 
> Hello,
> 
>  
> 
> it happened during the Russian DX Contest last Saturday, from one second to 
> another. No output. When I tune the display looks like this: 
> http://dl1mgb.com/temp/k3_no_power.jpg
> 
>  
> 
> Following conditions:
> 
>  
> 
> - sending into a 50 ohm dummy load
> 
> - no matter how many watts are set with PWR knob
> 
> - Test mode off
> 
> - TX INH off
> 
> - all driver transistors working (three screw test)
> 
> - no output power also on external watt meter
> 
> - happens on all bands
> 
> - happens with KPA set to "not inst"
> 
> - knocking on housing doesn't change anything
> 
> - when starting the antenna tuner, it says 5.0 watts, but no output on the 
> external watt meter
> 
>  
> 
> I am running out of ideas :-)
> 
>  
> 
> 73s Chris DL1MGB
> 
> __
> 
> 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
> 
> Message delivered to dd...@gmx.de
> 
>  
> 
__
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Re: [Elecraft] K3 - no output power

[Wes]

Does it receive?

Wes  N7WS

On 3/24/2021 1:03 PM, Christian Janssen DL1MGB wrote:

Hello,

it happened during the Russian DX Contest last Saturday, from one second to 
another. No output. When I tune the display looks like this: 
http://dl1mgb.com/temp/k3_no_power.jpg

Following conditions:

- sending into a 50 ohm dummy load
- no matter how many watts are set with PWR knob
- Test mode off
- TX INH off
- all driver transistors working (three screw test)
- no output power also on external watt meter
- happens on all bands
- happens with KPA set to "not inst"
- knocking on housing doesn't change anything
- when starting the antenna tuner, it says 5.0 watts, but no output on the 
external watt meter

I am running out of ideas :-)

73s Chris DL1MGB


__
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Re: [Elecraft] K3 - no output power

[Christian Janssen DL1MGB]

Hi Harald,

spectrum analyzer and more space on the table would be the best, but both not 
available :-)

Additional information:
- internal voltage / current (DISP)
  
Standby: 13.8 V / 0.86 A
Tune: 13.4 V / 3.20 A

And still no power output on the external wattmeter.

It seems that there is something produced, but it doesn't exit the K3.

I also did an EE INIT, ut no change.

73s Chris



Am 24.03.2021 um 21:32 schrieb Harald Fritzsche (DD0VS):
> Hello Chris,
> 
>  
> 
> strange is, that your Display does not show a frequency, but it should.
> 
>  
> 
> I had a water Intrusion in 2019 which causes several defects.
> 
> I was testing along the Signal path to see the Signal (with RSP-spectrum 
> analyzer), that helped me, to find the defects. It tooks a while also with 
> help of the list here.
> 
>  
> 
> Receiving is working?
> 
>  
> 
> Vy73 & GL
> 
> Harald
> 
> DD0VS
> 
>  
> 
>  
> 
>  
> 
> Gesendet von Mail  für 
> Windows 10
> 
>  
> 
> *Von: *Christian Janssen DL1MGB 
> *Gesendet: *Mittwoch, 24. März 2021 21:05
> *An: *elecraft@mailman.qth.net 
> *Betreff: *[Elecraft] K3 - no output power
> 
>  
> 
> Hello,
> 
>  
> 
> it happened during the Russian DX Contest last Saturday, from one second to 
> another. No output. When I tune the display looks like this: 
> http://dl1mgb.com/temp/k3_no_power.jpg
> 
>  
> 
> Following conditions:
> 
>  
> 
> - sending into a 50 ohm dummy load
> 
> - no matter how many watts are set with PWR knob
> 
> - Test mode off
> 
> - TX INH off
> 
> - all driver transistors working (three screw test)
> 
> - no output power also on external watt meter
> 
> - happens on all bands
> 
> - happens with KPA set to "not inst"
> 
> - knocking on housing doesn't change anything
> 
> - when starting the antenna tuner, it says 5.0 watts, but no output on the 
> external watt meter
> 
>  
> 
> I am running out of ideas :-)
> 
>  
> 
> 73s Chris DL1MGB
> 
> __
> 
> 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
> 
> Message delivered to dd...@gmx.de
> 
>  
> 
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[Elecraft] K3 - no output power

[Christian Janssen DL1MGB]

Hello,

it happened during the Russian DX Contest last Saturday, from one second to 
another. No output. When I tune the display looks like this: 
http://dl1mgb.com/temp/k3_no_power.jpg

Following conditions:

- sending into a 50 ohm dummy load
- no matter how many watts are set with PWR knob
- Test mode off
- TX INH off
- all driver transistors working (three screw test)
- no output power also on external watt meter
- happens on all bands
- happens with KPA set to "not inst"
- knocking on housing doesn't change anything
- when starting the antenna tuner, it says 5.0 watts, but no output on the 
external watt meter

I am running out of ideas :-)

73s Chris DL1MGB
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Re: [Elecraft] Why is my K3 off frequency?

[KENT TRIMBLE]

The quickest and easiest method for zero-beating the NCS on an SSB net 
is just what Andy described . . . tune for the most natural sounding 
voice.  I suppose someone with lab instruments and scopes might come up 
with something more sophisticated  But, as others have pointed out, 
sophistication is seldom needed in general Amateur use.  There is only 
one station in a net that all stations need to zero-beat and that is the 
NCS.


The NCS doesn't care about stations off-frequency.  It is not his job to 
tune for anybody.  He stays put.  It's the responsibility of stations 
who are checking into the net to find and zero-beat the NCS, not the 
other way around.  In fact, a good NCS will lock his main VFO so he 
doesn't accidentally bump it.  If he needs to fine-tune someone, he uses 
his clarifier/RIT.


The same holds true for all stations in the net (or round table).  They 
should use their main (transmitter) VFOs to zero the NCS, lock it, and 
then use their clarifier (RIT) knob to tune incoming signals as 
desired.  Of course, SPLIT could also be used to accomplish the same 
thing as long as the transmitting VFO is zeroed to the NCS and locked 
and the operator doesn't get confused as to which VFO is doing what.


But again, I can't emphasize enough that the NCS chooses a frequency of 
his choice nearest the published frequency in order to establish as 
clear a spot as possible and all others zero-beat him.  This protocol 
has been in practice in National Traffic System work since the advent of 
variable frequency oscillators.


73,

Kent  K9ZTV


On Mar 24, 2021, at 9:56 AM, Wes  wrote:

And how does a NCS know check-ins are off frequency, especially if it's a YL?

Wes  N7WS

On 3/24/2021 8:24 AM, Andy Durbin wrote:

"Calibration aside, stations checking into nets should always zero-beat the Net 
Control Station regardless of where he is on the dial and regardless of the net's 
published frequency."

O.k. I'll bite.   I started in amateur radio long enough ago to know how to use 
a BFO and to know how to zero beat an AM or CW signal.  How does one zero beat 
a suppressed carrier single sideband phone signal?  I just tune until the voice 
sounds like I think the voice should sound like.  It is very subjective and I 
certainly can't tune to less than 12 Hz error.

What technique are others using that enables them to "zero beat" SSB phone to 
better than 12 Hz accuracy?  I seldom use phone but I'd like to have this technique in my 
bag of tricks.

73,
Andy, k3wyc

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Re: [Elecraft] Why is my K3 off frequency?

[Fred Jensen]

True ... the NCS is, by definition, the net frequency.  One can zero 
beat CW and AM to within a Hz or so and with today's radios, you will 
even stay there.  What's to "zero beat" in a SSB signal?


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 3/24/2021 8:04 AM, KENT TRIMBLE wrote:

Probably a good time to remind newcomers . . .

Calibration aside, stations checking into nets should always zero-beat 
the Net Control Station regardless of where he is on the dial and 
regardless of the net's published frequency.


Last week the NCS of the 75-meter Interstate Sideband Net parked 
himself several kilohertz below the published frequency in order to 
escape QRM.  As the net control station that was his prerogative and 
his responsibility.  Most participants followed suit, but several 
stations insisted on transmitting on the published frequency and then 
complained that the NCS was off-frequency.  In truth, the NCS is never 
off-frequency.  He IS the net frequency.  Accurately zero-beating the 
NCS is even more critical on CW nets where conditions often mandate 
narrow filters.


73,

Kent  K9ZTV








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Re: [Elecraft] Why is my K3 off frequency?

[Hal Massey]

It’s not off frequency enough to care about it.

> On Mar 24, 2021, at 9:56 AM, Wes  wrote:
> 
> Took the words right out of my mouth. And how does a NCS know check-ins are 
> off frequency, especially if it's a YL?
> 
> Wes  N7WS
> 
> On 3/24/2021 8:24 AM, Andy Durbin wrote:
>> "Calibration aside, stations checking into nets should always zero-beat the 
>> Net Control Station regardless of where he is on the dial and regardless of 
>> the net's published frequency."
>> 
>> O.k. I'll bite.   I started in amateur radio long enough ago to know how to 
>> use a BFO and to know how to zero beat an AM or CW signal.  How does one 
>> zero beat a suppressed carrier single sideband phone signal?  I just tune 
>> until the voice sounds like I think the voice should sound like.  It is very 
>> subjective and I certainly can't tune to less than 12 Hz error.
>> 
>> What technique are others using that enables them to "zero beat" SSB phone 
>> to better than 12 Hz accuracy?  I seldom use phone but I'd like to have this 
>> technique in my bag of tricks.
>> 
>> 73,
>> Andy, k3wyc
> 
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Re: [Elecraft] Why is my K3 off frequency?

[Wes]

Took the words right out of my mouth. And how does a NCS know check-ins are off 
frequency, especially if it's a YL?


Wes  N7WS

On 3/24/2021 8:24 AM, Andy Durbin wrote:

"Calibration aside, stations checking into nets should always zero-beat the Net 
Control Station regardless of where he is on the dial and regardless of the net's 
published frequency."

O.k. I'll bite.   I started in amateur radio long enough ago to know how to use 
a BFO and to know how to zero beat an AM or CW signal.  How does one zero beat 
a suppressed carrier single sideband phone signal?  I just tune until the voice 
sounds like I think the voice should sound like.  It is very subjective and I 
certainly can't tune to less than 12 Hz error.

What technique are others using that enables them to "zero beat" SSB phone to 
better than 12 Hz accuracy?  I seldom use phone but I'd like to have this technique in my 
bag of tricks.

73,
Andy, k3wyc


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Re: [Elecraft] Why is my K3 off frequency?

[Dave Cole]

For SSB, I use the same.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 3/24/21 8:24 AM, Andy Durbin wrote:

"Calibration aside, stations checking into nets should always zero-beat the Net 
Control Station regardless of where he is on the dial and regardless of the net's 
published frequency."

O.k. I'll bite.   I started in amateur radio long enough ago to know how to use 
a BFO and to know how to zero beat an AM or CW signal.  How does one zero beat 
a suppressed carrier single sideband phone signal?  I just tune until the voice 
sounds like I think the voice should sound like.  It is very subjective and I 
certainly can't tune to less than 12 Hz error.

What technique are others using that enables them to "zero beat" SSB phone to 
better than 12 Hz accuracy?  I seldom use phone but I'd like to have this technique in my 
bag of tricks.

73,
Andy, k3wyc



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Re: [Elecraft] Why is my K3 off frequency?

[Andy Durbin]

"Calibration aside, stations checking into nets should always zero-beat the Net 
Control Station regardless of where he is on the dial and regardless of the 
net's published frequency."

O.k. I'll bite.   I started in amateur radio long enough ago to know how to use 
a BFO and to know how to zero beat an AM or CW signal.  How does one zero beat 
a suppressed carrier single sideband phone signal?  I just tune until the voice 
sounds like I think the voice should sound like.  It is very subjective and I 
certainly can't tune to less than 12 Hz error.

What technique are others using that enables them to "zero beat" SSB phone to 
better than 12 Hz accuracy?  I seldom use phone but I'd like to have this 
technique in my bag of tricks.

73,
Andy, k3wyc



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Re: [Elecraft] Why is my K3 off frequency?

[KENT TRIMBLE]

Probably a good time to remind newcomers . . .

Calibration aside, stations checking into nets should always zero-beat 
the Net Control Station regardless of where he is on the dial and 
regardless of the net's published frequency.


Last week the NCS of the 75-meter Interstate Sideband Net parked himself 
several kilohertz below the published frequency in order to escape QRM.  
As the net control station that was his prerogative and his 
responsibility.  Most participants followed suit, but several stations 
insisted on transmitting on the published frequency and then complained 
that the NCS was off-frequency.  In truth, the NCS is never 
off-frequency.  He IS the net frequency.  Accurately zero-beating the 
NCS is even more critical on CW nets where conditions often mandate 
narrow filters.


73,

Kent  K9ZTV






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Re: [Elecraft] Elecraft 80 Meter Net ... 01:00 utc Sunday Night/Mon Morning

[Dave New]

Paul,

There was some guys on 3.816 LSB when I started listening about 1/2  
before our net time.  The typical kind of thing where someone would  
say something, then a couple of minutes of silence, then someone else,  
then a bunch of ID's at the 10-minute mark.


Rinse, repeat.  This kind of thing can go on for hours amongst a bunch  
of old friends.


So, watching my waterfall, I noticed that 3.812 looked clear, so I  
started calling about 10 minutes before the hour, about once a minute.  
 Never heard anyone, so about 10 after, I called it quits.


I did tune up around 3.815 several times during that time, but all I  
heard was the guys on 3.816.  One of them, at least was splattering  
almost down to 3.812.


I still have a very high noise floor from 3.8 up to 6.2 MHz, from said  
neighbor's ATT U-Verse uplink, anywhere from S9 to S9+20 dB.


73,

-- Dave, N8SBE

Quoting Paul Van Dyke :


Thank you Gwen
I listened for 15 minutes before the net .. if there is no one .. as normal
i call it open
I found one of the crew, I am looking to change to the 3.7 range as I am
getting weary of this fight.
After being clear .. I get screamed at for taking "someone's" frequency..
Wait, and they are running USS on 80
Gaaa   Yes, it is 80 meters

73
Paul  KB9AVO
75/80 Meter Net Control


On Sun, Mar 21, 2021 at 9:08 PM Gwen Patton  wrote:


I tried to get in, but you couldn't hear me. There was also some irate
gentleman out there complaining that he was already using the frequency
that was very weak. So I think things were a little congested.

-=-=-=-=-=-=-=-=-
73,
Gwen, NG3P


On Sun, Mar 21, 2021 at 8:54 PM Paul Van Dyke 
wrote:


on 3.820 now
3.822


On Sun, Mar 21, 2021 at 8:47 PM Paul Van Dyke 
wrote:

> And now they found that 3915 was open .. any members can hear
> from their area
>
> Paul KB9AVO  75M
>
>
> On Sat, Mar 20, 2021 at 11:42 AM Paul Van Dyke 
> wrote:
>
>> We will do our weekly crap shoot and Try for 3.815 as I never know the
>> mood or how the band is populated at that hour
>> Keep Smiling
>>
>> Paul - KB9AVO
>> 80 Meter Net Control
>>
>
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