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Re: Extreme QRPp using the KX2, KX3

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Hajo Dezelski

Re: Extreme QRPp using the KX2, KX3

Hi ,

wouldn't it be great if there was an additional sensor for the Wattmeter W2
for the Qrp-Guys 1-54 Mhz and 0.01 - 20 Watt?

Who needs a 200 Watt version if you only have the Kx-Line ;-)
I really would consider buying a qrp-version.

73 de

Hajo dl1sdz

---
Cela est bien dit, mais il faut cultiver notre jardin.

http://hajos-kontrapunkte.blogspot.de/

Wayne Burdick <[hidden email]> schrieb am Sa., 3. März 2018 16:49:

> Power output on the KX2, KX3, K3 and K3S can be set as low as 0.1 W
> directly using the PWR control.
>
> However, you can actually set power output to much lower levels (< 1
> milliwatt), with fine control, by turning off ALC in the menu and adjusting
> the drive level manually.
>
> Here’s the recommended procedure for accurately setting power to levels
> below 0.1 watt:
>
> 1. Connect an external milliwatt meter between the transceiver and the
> antenna or dummy load. If you don’t have such a meter, you can
> alternatively connect a dummy load (such as the Elecraft DL2) then use an
> oscilloscope or an RF voltmeter. (The DL2 includes a rectifier so you can
> just use a DC voltmeter. The manual for the DL2 provides a translation from
> DC volts to power level.)
>
> 2. For most accurate results, bypass the ATU. This is done in the menu on
> the KX2 and KX3. The K3/K3S has an ATU switch function on the front panel
> for this purpose.
>
> 3. Start with PWR set to 0.1 W and verify that you hit about this level on
> the external meter. Hold TUNE to generate a continuous carrier. (This
> automatically switches to CW mode temporarily, even if you’re using a
> different mode.) Then exit TUNE by tapping XMIT.
>
> Note: The 0.1-W level is not well-calibrated at the rig’s internal
> wattmeter, because this only forward-biases the rig’s SWR detector diodes
> by a small amount. Also, the SWR (shown on VFO A) will appear as “--“,
> because reflected power will be too low to accurately calculate it.
>
> 5. Go into the menu and turn off TX ALC. This is done using the TX GAIN
> menu entry on the KX2 (page 41 of the manual) or KX3 (page 49). Use the
> CONFIG:TX ALC menu entry on the K3 or K3S (approx. page 66).
>
> Note: On all of the rigs, the TECH MD menu entry must be set to ON in
> order to see the TX GAIN or TX ALC menu entries. This is a precaution to
> make sure such menu settings are not changed unintentionally. On the KX2
> and KX3, you also need to UNLOCK the ALC on/off feature as explained in the
> manual (MENU section).
>
> 6. With ALC turned OFF, the PWR control now directly controls the transmit
> drive level in fine increments. I just tested my lab KX2 and found I could
> set the power smoothly down to as low as about 1/2 milliwatt.
>
> When you have ALC turned off, the PWR display (on VFO B) will include an
> asterisk (*) as a reminder. It will not show actual power level for reasons
> described above. An external metering method will be needed to dial in the
> desired level.
>
> Wayne
> N6KR
>
>
>
>
> ______________________________________________________________
> 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
> Message delivered to [hidden email]

Dr. William J. Schmidt, II

Re: Extreme QRPp using the KX2, KX3

Yeah... I didn't wait. I built my own...

Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

Owner - Operator
Big Signal Ranch – K9ZC
Staunton, Illinois

Owner – Operator
Villa Grand Piton – J68HZ
Soufriere, St. Lucia W.I.
Rent it: www.VillaGrandPiton.com
Like us on Facebook!

Moderator – North American QRO Yahoo Group.

email: [hidden email]

-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf Of Hajo Dezelski
Sent: Saturday, March 3, 2018 3:06 PM
To: Wayne Burdick <[hidden email]>
Cc: Elecraft Reflector <[hidden email]>
Subject: Re: [Elecraft] Extreme QRPp using the KX2, KX3

Hi ,

wouldn't it be great if there was an additional sensor for the Wattmeter W2 for the Qrp-Guys 1-54 Mhz and 0.01 - 20 Watt?

Who needs a 200 Watt version if you only have the Kx-Line ;-) I really would consider buying a qrp-version.

73 de

Hajo dl1sdz

---
Cela est bien dit, mais il faut cultiver notre jardin.

http://hajos-kontrapunkte.blogspot.de/

Wayne Burdick <[hidden email]> schrieb am Sa., 3. März 2018 16:49:

> Power output on the KX2, KX3, K3 and K3S can be set as low as 0.1 W
> directly using the PWR control.
>
> However, you can actually set power output to much lower levels (< 1
> milliwatt), with fine control, by turning off ALC in the menu and
> adjusting the drive level manually.
>
> Here’s the recommended procedure for accurately setting power to
> levels below 0.1 watt:
>
> 1. Connect an external milliwatt meter between the transceiver and the
> antenna or dummy load. If you don’t have such a meter, you can
> alternatively connect a dummy load (such as the Elecraft DL2) then use
> an oscilloscope or an RF voltmeter. (The DL2 includes a rectifier so
> you can just use a DC voltmeter. The manual for the DL2 provides a
> translation from DC volts to power level.)
>
> 2. For most accurate results, bypass the ATU. This is done in the menu
> on the KX2 and KX3. The K3/K3S has an ATU switch function on the front
> panel for this purpose.
>
> 3. Start with PWR set to 0.1 W and verify that you hit about this
> level on the external meter. Hold TUNE to generate a continuous
> carrier. (This automatically switches to CW mode temporarily, even if
> you’re using a different mode.) Then exit TUNE by tapping XMIT.
>
> Note: The 0.1-W level is not well-calibrated at the rig’s internal
> wattmeter, because this only forward-biases the rig’s SWR detector
> diodes by a small amount. Also, the SWR (shown on VFO A) will appear
> as “--“, because reflected power will be too low to accurately calculate it.
>
> 5. Go into the menu and turn off TX ALC. This is done using the TX
> GAIN menu entry on the KX2 (page 41 of the manual) or KX3 (page 49).
> Use the CONFIG:TX ALC menu entry on the K3 or K3S (approx. page 66).
>
> Note: On all of the rigs, the TECH MD menu entry must be set to ON in
> order to see the TX GAIN or TX ALC menu entries. This is a precaution
> to make sure such menu settings are not changed unintentionally. On
> the KX2 and KX3, you also need to UNLOCK the ALC on/off feature as
> explained in the manual (MENU section).
>
> 6. With ALC turned OFF, the PWR control now directly controls the
> transmit drive level in fine increments. I just tested my lab KX2 and
> found I could set the power smoothly down to as low as about 1/2 milliwatt.
>
> When you have ALC turned off, the PWR display (on VFO B) will include
> an asterisk (*) as a reminder. It will not show actual power level for
> reasons described above. An external metering method will be needed to
> dial in the desired level.
>
> Wayne
> N6KR
>
>
>
>
> ______________________________________________________________
> 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 Message delivered to
> [hidden email]

______________________________________________________________
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 Message delivered to [hidden email]

---
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______________________________________________________________
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
Message delivered to [hidden email]

Hajo Dezelski

Re: Extreme QRPp using the KX2, KX3

Hi Bill,

Please explain yourself ...
If it is in the range of a normal OM, I would follow ...

73 de
Hajo dl1sdz

---
Cela est bien dit, mais il faut cultiver notre jardin.

http://hajos-kontrapunkte.blogspot.de/

Dr. William J. Schmidt <[hidden email]> schrieb am Sa., 3. März 2018,
23:14:

> Yeah... I didn't wait. I built my own...
>
>
> Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ
>
> Owner - Operator
> Big Signal Ranch – K9ZC
> Staunton, Illinois
>
> Owner – Operator
> Villa Grand Piton – J68HZ
> Soufriere, St. Lucia W.I.
> Rent it: www.VillaGrandPiton.com
> Like us on Facebook!
>
> Moderator – North American QRO Yahoo Group.
>
> email: [hidden email]
>
>
>
> -----Original Message-----
> From: [hidden email] [mailto:
> [hidden email]] On Behalf Of Hajo Dezelski
> Sent: Saturday, March 3, 2018 3:06 PM
> To: Wayne Burdick <[hidden email]>
> Cc: Elecraft Reflector <[hidden email]>
> Subject: Re: [Elecraft] Extreme QRPp using the KX2, KX3
>
> Hi ,
>
> wouldn't it be great if there was an additional sensor for the Wattmeter
> W2 for the Qrp-Guys 1-54 Mhz and 0.01 - 20 Watt?
>
> Who needs a 200 Watt version if you only have the Kx-Line ;-) I really
> would consider buying a qrp-version.
>
> 73 de
>
> Hajo dl1sdz
>
> ---
> Cela est bien dit, mais il faut cultiver notre jardin.
>
>
> http://hajos-kontrapunkte.blogspot.de/
>
>
>
> Wayne Burdick <[hidden email]> schrieb am Sa., 3. März 2018 16:49:
>
> > Power output on the KX2, KX3, K3 and K3S can be set as low as 0.1 W
> > directly using the PWR control.
> >
> > However, you can actually set power output to much lower levels (< 1
> > milliwatt), with fine control, by turning off ALC in the menu and
> > adjusting the drive level manually.
> >
> > Here’s the recommended procedure for accurately setting power to
> > levels below 0.1 watt:
> >
> > 1. Connect an external milliwatt meter between the transceiver and the
> > antenna or dummy load. If you don’t have such a meter, you can
> > alternatively connect a dummy load (such as the Elecraft DL2) then use
> > an oscilloscope or an RF voltmeter. (The DL2 includes a rectifier so
> > you can just use a DC voltmeter. The manual for the DL2 provides a
> > translation from DC volts to power level.)
> >
> > 2. For most accurate results, bypass the ATU. This is done in the menu
> > on the KX2 and KX3. The K3/K3S has an ATU switch function on the front
> > panel for this purpose.
> >
> > 3. Start with PWR set to 0.1 W and verify that you hit about this
> > level on the external meter. Hold TUNE to generate a continuous
> > carrier. (This automatically switches to CW mode temporarily, even if
> > you’re using a different mode.) Then exit TUNE by tapping XMIT.
> >
> > Note: The 0.1-W level is not well-calibrated at the rig’s internal
> > wattmeter, because this only forward-biases the rig’s SWR detector
> > diodes by a small amount. Also, the SWR (shown on VFO A) will appear
> > as “--“, because reflected power will be too low to accurately calculate
> it.
> >
> > 5. Go into the menu and turn off TX ALC. This is done using the TX
> > GAIN menu entry on the KX2 (page 41 of the manual) or KX3 (page 49).
> > Use the CONFIG:TX ALC menu entry on the K3 or K3S (approx. page 66).
> >
> > Note: On all of the rigs, the TECH MD menu entry must be set to ON in
> > order to see the TX GAIN or TX ALC menu entries. This is a precaution
> > to make sure such menu settings are not changed unintentionally. On
> > the KX2 and KX3, you also need to UNLOCK the ALC on/off feature as
> > explained in the manual (MENU section).
> >
> > 6. With ALC turned OFF, the PWR control now directly controls the
> > transmit drive level in fine increments. I just tested my lab KX2 and
> > found I could set the power smoothly down to as low as about 1/2
> milliwatt.
> >
> > When you have ALC turned off, the PWR display (on VFO B) will include
> > an asterisk (*) as a reminder. It will not show actual power level for
> > reasons described above. An external metering method will be needed to
> > dial in the desired level.
> >
> > Wayne
> > N6KR
> >
> >
> >
> >
> > ______________________________________________________________
> > 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 Message delivered to
> > [hidden email]
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>
>
> ---
> This email has been checked for viruses by AVG.
> http://www.avg.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
> Message delivered to [hidden email]