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[OT] WWV Time Transmissions

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Bill Frantz

[OT] WWV Time Transmissions

I had a friend ask me if something has happened to WWV's time
transmissions. He says the clocks in his home and his watch are
no longer syncing correctly. I think these are syncing to
signals at about 60KHz.

Does anyone know anything about this?

73 Bill AE6JV

-----------------------------------------------------------------------
Bill Frantz | "The only thing we have to | Periwinkle
(408)348-7900 | fear is fear itself." - FDR | 150
Rivermead Rd #235
www.pwpconsult.com | Inaugural address, 3/4/1933 |
Peterborough, NH 03458

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NK7Z

Re: [OT] WWV Time Transmissions

My WWVB clock is dead on, and has been for years... No issues here at all.

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

On 8/31/20 5:44 PM, Bill Frantz wrote:

> I had a friend ask me if something has happened to WWV's time
> transmissions. He says the clocks in his home and his watch are no
> longer syncing correctly. I think these are syncing to signals at about
> 60KHz.
>
> Does anyone know anything about this?
>
> 73 Bill AE6JV
>
> -----------------------------------------------------------------------
> Bill Frantz | "The only thing we have to | Periwinkle
> (408)348-7900 | fear is fear itself." - FDR | 150 Rivermead Rd #235
> www.pwpconsult.com | Inaugural address, 3/4/1933 | Peterborough, NH 03458
>
> ______________________________________________________________
> 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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Tox

Re: [OT] WWV Time Transmissions

In reply to this post by Bill Frantz

There was talk of shutting it down as cost savings, but I thought that got
squelched.

Scott
AD6YT

On Mon, Aug 31, 2020 at 5:45 PM Bill Frantz <[hidden email]> wrote:

> I had a friend ask me if something has happened to WWV's time
> transmissions. He says the clocks in his home and his watch are
> no longer syncing correctly. I think these are syncing to
> signals at about 60KHz.
>
> Does anyone know anything about this?
>
> 73 Bill AE6JV
>
> -----------------------------------------------------------------------
> Bill Frantz | "The only thing we have to | Periwinkle
> (408)348-7900 | fear is fear itself." - FDR | 150
> Rivermead Rd #235
> www.pwpconsult.com | Inaugural address, 3/4/1933 |
> Peterborough, NH 03458
>
> ______________________________________________________________
> 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]
>

--
Scott Small
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NK7Z

Re: [OT] WWV Time Transmissions

It did... That was a ploy to keep funding is all.

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

On 8/31/20 6:21 PM, Tox wrote:

> There was talk of shutting it down as cost savings, but I thought that got
> squelched.
>
> Scott
> AD6YT
>
> On Mon, Aug 31, 2020 at 5:45 PM Bill Frantz <[hidden email]> wrote:
>
>> I had a friend ask me if something has happened to WWV's time
>> transmissions. He says the clocks in his home and his watch are
>> no longer syncing correctly. I think these are syncing to
>> signals at about 60KHz.
>>
>> Does anyone know anything about this?
>>
>> 73 Bill AE6JV
>>
>> -----------------------------------------------------------------------
>> Bill Frantz | "The only thing we have to | Periwinkle
>> (408)348-7900 | fear is fear itself." - FDR | 150
>> Rivermead Rd #235
>> www.pwpconsult.com | Inaugural address, 3/4/1933 |
>> Peterborough, NH 03458
>>
>> ______________________________________________________________
>> 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]
>>
>
>

N4ST - Jim

Re: [OT] WWV Time Transmissions

In reply to this post by Bill Frantz

He may have just recently added a local RFI source to his home.
There are some noisy switching supplies out there on consumer devices.
One clock I have has an LED display and it shuts the LEDs off at 2am local
time for 10 minutes to allow syncing to WWV.
_____________
73,
Jim - N4ST

-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of Bill Frantz
Sent: Monday, August 31, 2020 20:45
To: [hidden email]
Subject: [Elecraft] [OT] WWV Time Transmissions

I had a friend ask me if something has happened to WWV's time
transmissions. He says the clocks in his home and his watch are
no longer syncing correctly. I think these are syncing to
signals at about 60KHz.

Does anyone know anything about this?

73 Bill AE6JV

-----------------------------------------------------------------------
Bill Frantz | "The only thing we have to | Periwinkle
(408)348-7900 | fear is fear itself." - FDR | 150
Rivermead Rd #235
www.pwpconsult.com | Inaugural address, 3/4/1933 |
Peterborough, NH 03458

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Jim Sheldon

Re: [OT] WWV Time Transmissions

Propagation hasn't been the best on VLF either. I'm a lot closer to
WWVB than he is and my clocks sometimes lose sync for a day or two as
well, but right now they are ally locked on and showing the right time.
I also have a QRP Labs GPS clock running that is showing the same time
to the second as the WWVB disciplined clocks. I'd bet it's either RFI
from a noise source in the house or neighbor's house if close enough or
just poor summer propagation on VLF.

Jim - W0EB

------ Original Message ------
From: "N4ST - Jim" <[hidden email]>
To: "'Bill Frantz'" <[hidden email]>; [hidden email]
Sent: 8/31/2020 8:36:54 PM
Subject: Re: [Elecraft] [OT] WWV Time Transmissions

He may have just recently added a local RFI source to his home.
There are some noisy switching supplies out there on consumer devices.
One clock I have has an LED display and it shuts the LEDs off at 2am local
time for 10 minutes to allow syncing to WWV.
_____________
73,
Jim - N4ST

-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of Bill Frantz
Sent: Monday, August 31, 2020 20:45
To: [hidden email]
Subject: [Elecraft] [OT] WWV Time Transmissions

I had a friend ask me if something has happened to WWV's time
transmissions. He says the clocks in his home and his watch are
no longer syncing correctly. I think these are syncing to
signals at about 60KHz.

Does anyone know anything about this?

73 Bill AE6JV

-----------------------------------------------------------------------
Bill Frantz | "The only thing we have to | Periwinkle
(408)348-7900 | fear is fear itself." - FDR | 150
Rivermead Rd #235
www.pwpconsult.com | Inaugural address, 3/4/1933 |
Peterborough, NH 03458

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Scott Manthe-2

Re: [OT] WWV Time Transmissions

In reply to this post by NK7Z

A ploy to keep funding? From who? The president of the United States
recommended defunding WWV in his 2019 budget recommendation submitted to
the Congress. So, you're saying that the president threatened to cut
funding to WWV as a ploy so that Congress would maintain this funding?
Clever of him.

https://www.voanews.com/usa/us-politics/time-may-be-running-out-millions-clocks

73,
Scott N9AA

On 8/31/20 9:29 PM, Dave Cole wrote:

> It did... That was a ploy to keep funding is all.
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist
> ARRL Asst. Director, NW Division, Technical Resources
>
> On 8/31/20 6:21 PM, Tox wrote:
>> There was talk of shutting it down as cost savings, but I thought
>> that got
>> squelched.
>>
>> Scott
>> AD6YT
>>
>> On Mon, Aug 31, 2020 at 5:45 PM Bill Frantz <[hidden email]>
>> wrote:
>>
>>> I had a friend ask me if something has happened to WWV's time
>>> transmissions. He says the clocks in his home and his watch are
>>> no longer syncing correctly. I think these are syncing to
>>> signals at about 60KHz.
>>>
>>> Does anyone know anything about this?
>>>
>>> 73 Bill AE6JV
>>>
>>> -----------------------------------------------------------------------
>>> Bill Frantz | "The only thing we have to | Periwinkle
>>> (408)348-7900 | fear is fear itself." - FDR | 150
>>> Rivermead Rd #235
>>> www.pwpconsult.com | Inaugural address, 3/4/1933 |
>>> Peterborough, NH 03458
>>>

Phil Kane-2

Re: [OT] WWV Time Transmissions

On 8/31/2020 7:11 PM, Scott Manthe wrote:

> A ploy to keep funding? From who? The president of the United States
> recommended defunding WWV in his 2019 budget recommendation submitted to
> the Congress. So, you're saying that the president threatened to cut
> funding to WWV as a ploy so that Congress would maintain this funding?
> Clever of him.

Stir, stir, stir. Glad that smarter heads prevailed. But that
"de-funding" and "re-funding" is old news.

73 de K2ASP - Phil Kane
Elecraft K2/100 s/n 5402

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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n6lrv

Re: [OT] WWV Time Transmissions

In reply to this post by Bill Frantz

Bill,
WWVB added a new modulation format starting around 2012/13 that includes a phase shift that some older clocks can no longer resolve. If you're technically inclined the internet is loaded with fixes for some older clocks as well as further information on this topic like <https://www.californiahistoricalradio.com/wp-content/uploads//2017/02/CHRS-Construction-BPSK-Dephaser-John-Staples.pdf>.

Gary, N6LRV

________________________________
From: [hidden email] <[hidden email]> on behalf of Bill Frantz <[hidden email]>
Sent: Monday, August 31, 2020 5:44 PM
To: [hidden email] <[hidden email]>
Subject: [Elecraft] [OT] WWV Time Transmissions

I had a friend ask me if something has happened to WWV's time
transmissions. He says the clocks in his home and his watch are
no longer syncing correctly. I think these are syncing to
signals at about 60KHz.

Does anyone know anything about this?

73 Bill AE6JV

-----------------------------------------------------------------------
Bill Frantz | "The only thing we have to | Periwinkle
(408)348-7900 | fear is fear itself." - FDR | 150
Rivermead Rd #235
www.pwpconsult.com<http://www.pwpconsult.com> | Inaugural address, 3/4/1933 |
Peterborough, NH 03458

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Mike Maloney

Re: [OT] WWV Time Transmissions

Does anyone know any engineers who are hams at NIST, Fort Collins, CO?I be curious to know the RF loading coil and ground currents under the 0.024 wave stub verticals for 5000M WWVB.
Mike AC5P
On Tuesday, September 1, 2020, 09:17:41 AM CDT, [hidden email] <[hidden email]> wrote:

Bill,
WWVB added a new modulation format starting around 2012/13 that includes a phase shift that some older clocks can no longer resolve. If you're technically inclined the internet is loaded with fixes for some older clocks as well as further information on this topic like <https://www.californiahistoricalradio.com/wp-content/uploads//2017/02/CHRS-Construction-BPSK-Dephaser-John-Staples.pdf>.

Gary, N6LRV

________________________________
From: [hidden email] <[hidden email]> on behalf of Bill Frantz <[hidden email]>
Sent: Monday, August 31, 2020 5:44 PM
To: [hidden email] <[hidden email]>
Subject: [Elecraft] [OT] WWV Time Transmissions

I had a friend ask me if something has happened to WWV's time
transmissions. He says the clocks in his home and his watch are
no longer syncing correctly. I think these are syncing to
signals at about 60KHz.

Does anyone know anything about this?

73 Bill AE6JV

-----------------------------------------------------------------------
Bill Frantz | "The only thing we have to | Periwinkle
(408)348-7900 | fear is fear itself." - FDR | 150
Rivermead Rd #235
www.pwpconsult.com<http://www.pwpconsult.com> | Inaugural address, 3/4/1933 |
Peterborough, NH 03458

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Ronnie Hull

my KPA1500 and 160M

This morning I put up a W7FG true ladder line 160M doublet. Upon testing,
the K3 internal atu does great, matches at 1.3:1. But when I throw the
KAP1500 in line, it gets all pissed off, throws up and faults out. Says SWR
is 99:1 !!!

The Antenna: The Apex is at 50'. It is in a inverted Vee config, with both
ends approx 20' off the ground. I'm using 59' of the 600 ohm true ladder
line to a Balun Designs 5KW 4:1 Balun. This is fed with 22' of Wilson LMR400

Both the K3 internal atu, AND the KPA1500 internal atu get a great match on
80M, 1.2:1 with no issues.

Honestly, most of the work on 160M is FT8 running 20 watts or less, so just
using the K3 to get a successful match on 160M is fine

I just wonder why the KAP1500 doesn't like the same antenna the K3 likes.

Any ideas here fellers?

thanks and 73

73 and GL OM DE w5sum

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Dick Dievendorff-4

Re: my KPA1500 and 160M

What is the SWR of the antenna if the K3 ATU and KPA1500 ATU are both
bypassed?

Keep the KPA1500 in mode STBY and ATU Mode BYP for this.

73 de Dick, K6KR

-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of [hidden email]
Sent: Tuesday, September 1, 2020 09:37
To: Elecraft Reflector <[hidden email]>
Subject: [Elecraft] my KPA1500 and 160M

This morning I put up a W7FG true ladder line 160M doublet. Upon testing,
the K3 internal atu does great, matches at 1.3:1. But when I throw the
KAP1500 in line, it gets all pissed off, throws up and faults out. Says SWR
is 99:1 !!!

The Antenna: The Apex is at 50'. It is in a inverted Vee config, with both

ends approx 20' off the ground. I'm using 59' of the 600 ohm true ladder
line to a Balun Designs 5KW 4:1 Balun. This is fed with 22' of Wilson LMR400

Both the K3 internal atu, AND the KPA1500 internal atu get a great match on
80M, 1.2:1 with no issues.

Honestly, most of the work on 160M is FT8 running 20 watts or less, so just
using the K3 to get a successful match on 160M is fine

I just wonder why the KAP1500 doesn't like the same antenna the K3 likes.

Any ideas here fellers?

thanks and 73

73 and GL OM DE w5sum

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Elecraft mailing list

Re: [OT] WWVB Time Transmissions

In reply to this post by n6lrv

> Bill,
> WWVB added a new modulation format starting around 2012/13 that includes a phase shift that some older clocks can
> no longer resolve.

Gary,

The 2012 addition of BPSK modulation doesn't affect WWVB-controlled clocks -- only older carrier phase tracking receivers that use WWVB as a frequency reference that were designed prior to the October 29, 2012 modulation format change.

NIST has several receivers scattered around the country that monitor WWVB signal levels, 24 hours a day. You can check the status any time by going here:

https://tf.nist.gov/tf-cgi/wwvbmonitor_e.cgi

Occasionally, WWVB is taken off the air for brief periods of time. Information on outages can be found here:

https://www.nist.gov/pml/time-and-frequency-division/radio-stations/wwvb/wwvb-station-outages

NIST Special Publication 250-67 provides technical details regarding the transmitters, feedlines, antenna systems, and routine maintenance procedures employed at WWV, WWVB, and WWVH.

73 de John, KD2BD

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David Gilbert-2

Re: my KPA1500 and 160M

In reply to this post by Ronnie Hull

One distinct possibility is that the 4:1 balun is getting hot at 1500
watts. Have you tried running the KPA1500 at a lower power?

73,
Dave AB7E

On 9/1/2020 9:36 AM, [hidden email] wrote:

> This morning I put up a W7FG true ladder line 160M doublet.   Upon
> testing, the K3 internal atu does great, matches at 1.3:1. But when I
> throw the KAP1500 in line, it gets all pissed off, throws up and
> faults out. Says SWR is 99:1 !!!
>
> The Antenna: The Apex is at 50'. It is in a inverted Vee config,
> with both ends approx 20' off the ground.   I'm using 59' of the 600
> ohm true ladder line to a Balun Designs 5KW 4:1 Balun. This is fed
> with 22' of Wilson LMR400
>
> Both the K3 internal atu, AND the KPA1500 internal atu get a great
> match on 80M, 1.2:1   with no issues.
>
> Honestly, most of the work on 160M is FT8 running 20 watts or less, so
> just using the K3 to get a successful match on 160M is fine
>
> I just wonder why the KAP1500 doesn't like the same antenna the K3 likes.
>
> Any ideas here fellers?
>
> thanks and 73
>
> 73 and GL OM DE w5sum

Elecraft mailing list

Re: my KPA1500 and 160M

In reply to this post by Ronnie Hull

Be sure the K3 tuner is off when using the KPA1500’s tuner.
Dan - NB2P

Sent from Yahoo Mail for iPhone

On Tuesday, September 1, 2020, 12:51 PM, [hidden email] wrote:

This morning I put up a W7FG true ladder line 160M doublet. Upon testing,
the K3 internal atu does great, matches at 1.3:1. But when I throw the
KAP1500 in line, it gets all pissed off, throws up and faults out. Says SWR
is 99:1 !!!

The Antenna: The Apex is at 50'. It is in a inverted Vee config, with both
ends approx 20' off the ground. I'm using 59' of the 600 ohm true ladder
line to a Balun Designs 5KW 4:1 Balun. This is fed with 22' of Wilson LMR400

Both the K3 internal atu, AND the KPA1500 internal atu get a great match on
80M, 1.2:1 with no issues.

Honestly, most of the work on 160M is FT8 running 20 watts or less, so just
using the K3 to get a successful match on 160M is fine

I just wonder why the KAP1500 doesn't like the same antenna the K3 likes.

Any ideas here fellers?

thanks and 73

73 and GL OM DE w5sum

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Michael Walker

Re: my KPA1500 and 160M

Do you have actual antenna measurements with an analyzer? It would be
helpful to know what the KTA500 is seeing.

Mike va3mw

On Tue, Sep 1, 2020 at 1:31 PM Daniel Carille via Elecraft <
[hidden email]> wrote:

> Be sure the K3 tuner is off when using the KPA1500’s tuner.
> Dan - NB2P
>
>
> Sent from Yahoo Mail for iPhone
>
>
> On Tuesday, September 1, 2020, 12:51 PM, [hidden email] wrote:
>
> This morning I put up a W7FG true ladder line 160M doublet. Upon testing,
> the K3 internal atu does great, matches at 1.3:1. But when I throw the
> KAP1500 in line, it gets all pissed off, throws up and faults out. Says
> SWR
> is 99:1 !!!
>
> The Antenna: The Apex is at 50'. It is in a inverted Vee config, with
> both
> ends approx 20' off the ground. I'm using 59' of the 600 ohm true ladder
> line to a Balun Designs 5KW 4:1 Balun. This is fed with 22' of Wilson
> LMR400
>
> Both the K3 internal atu, AND the KPA1500 internal atu get a great match
> on
> 80M, 1.2:1 with no issues.
>
> Honestly, most of the work on 160M is FT8 running 20 watts or less, so
> just
> using the K3 to get a successful match on 160M is fine
>
> I just wonder why the KAP1500 doesn't like the same antenna the K3 likes.
>
> Any ideas here fellers?
>
> thanks and 73
>
> 73 and GL OM DE w5sum
>
> ______________________________________________________________
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>
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N4ZR

Re: my KPA1500 and 160M

Or, for that matter, try it into a dummy load, so that you can verify
the performance of the KPA-1500's tuner on 160.

73, Pete N4ZR
Check out the Reverse Beacon Network
at <http://reversebeacon.net>, now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.

On 9/1/2020 1:43 PM, Michael Walker wrote:

> Do you have actual antenna measurements with an analyzer? It would be
> helpful to know what the KTA500 is seeing.
>
> Mike va3mw
>
>
> On Tue, Sep 1, 2020 at 1:31 PM Daniel Carille via Elecraft <
> [hidden email]> wrote:
>
>> Be sure the K3 tuner is off when using the KPA1500’s tuner.
>> Dan - NB2P
>>
>>
>> Sent from Yahoo Mail for iPhone
>>
>>
>> On Tuesday, September 1, 2020, 12:51 PM, [hidden email] wrote:
>>
>> This morning I put up a W7FG true ladder line 160M doublet. Upon testing,
>> the K3 internal atu does great, matches at 1.3:1. But when I throw the
>> KAP1500 in line, it gets all pissed off, throws up and faults out. Says
>> SWR
>> is 99:1 !!!
>>
>> The Antenna: The Apex is at 50'. It is in a inverted Vee config, with
>> both
>> ends approx 20' off the ground. I'm using 59' of the 600 ohm true ladder
>> line to a Balun Designs 5KW 4:1 Balun. This is fed with 22' of Wilson
>> LMR400
>>
>> Both the K3 internal atu, AND the KPA1500 internal atu get a great match
>> on
>> 80M, 1.2:1 with no issues.
>>
>> Honestly, most of the work on 160M is FT8 running 20 watts or less, so
>> just
>> using the K3 to get a successful match on 160M is fine
>>
>> I just wonder why the KAP1500 doesn't like the same antenna the K3 likes.
>>
>> Any ideas here fellers?
>>
>> thanks and 73
>>
>> 73 and GL OM DE w5sum
>>
>> ______________________________________________________________
>> 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
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>> 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
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>
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Vic Rosenthal

Re: my KPA1500 and 160M

In reply to this post by Ronnie Hull

99:1 sounds like the wrong antenna output is selected.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 01/09/2020 19:36, [hidden email] wrote:

> This morning I put up a W7FG true ladder line 160M doublet.   Upon
> testing, the K3 internal atu does great, matches at 1.3:1. But when I
> throw the KAP1500 in line, it gets all pissed off, throws up and faults
> out. Says SWR is 99:1 !!!
>
> The Antenna: The Apex is at 50'. It is in a inverted Vee config, with
> both ends approx 20' off the ground.   I'm using 59' of the 600 ohm true
> ladder line to a Balun Designs 5KW 4:1 Balun. This is fed with 22' of
> Wilson LMR400
>
> Both the K3 internal atu, AND the KPA1500 internal atu get a great match
> on 80M, 1.2:1   with no issues.
>
> Honestly, most of the work on 160M is FT8 running 20 watts or less, so
> just using the K3 to get a successful match on 160M is fine
>
> I just wonder why the KAP1500 doesn't like the same antenna the K3 likes.
>
> Any ideas here fellers?
>
> thanks and 73
>
> 73 and GL OM DE w5sum

Steve Hall

Re: my KPA1500 and 160M

In reply to this post by Ronnie Hull

Sounds like the KPA1500 is seeing more SWR than it likes. My K3 is able to
match antennas faster and better than my KAT500.
I have had a number of antennas very similar to yours and spent many hours
experimenting with feedline length. The length of the open like has a
direct effect on the antenna system impedance. Try varying your open line
length about 10 feet and with an antenna analyser measure the difference in
SWR curves before and after. Additionally I find a 1:1 current balun
provides a better match than a 4:1.
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Rick Bates, NK7I

Re: my KPA1500 and 160M

If you model it accurately, you see that a 4:1 transformer will cause most (other than 160M) to have a closer match; while on a few the 1:1 device will work better.

If convenient, try each. They each offer (dis)advantages.

Rick NK7I

Email spiel Czech corruptions happen

> On Sep 1, 2020, at 3:26 PM, Steve Hall <[hidden email]> wrote:
>
> Additionally I find a 1:1 current balun
> provides a better match than a 4:1.
> ______________________________________________________________
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