KX2 power cable polarity?

[Doug Daniels]

Just opened the box on my new KX2, and am about to put powerpoles on the
power cable. Since both sides of the wire are black, which is the positive,
the one with the white dashes?

Thanks.

--

--... ...--
Doug
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[Ian, NV4C]

The side with the white stripes us the positive. I just did the same thing
last night.

73 de,

Ian, NV4C

On Sat, Jun 27, 2020, 10:52 AM Doug Daniels <[hidden email]> wrote:

> Just opened the box on my new KX2, and am about to put powerpoles on the
> power cable. Since both sides of the wire are black, which is the positive,
> the one with the white dashes?
>
> Thanks.
>
> --
>
> --... ...--
> Doug
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[Greg Troxel-2]

Ian Kahn <[hidden email]> writes:

> The side with the white stripes us the positive. I just did the same thing
> last night.
>
> 73 de,
>
> Ian, NV4C
>
> On Sat, Jun 27, 2020, 10:52 AM Doug Daniels <[hidden email]> wrote:
>
>> Just opened the box on my new KX2, and am about to put powerpoles on the
>> power cable. Since both sides of the wire are black, which is the positive,
>> the one with the white dashes?

And check this by measuring with a meter.  See the manual, and check the
radio itself, but on all Elecraft equipment I have seen, the outside of
the barrel is ground and the inside is +12.

73 de n1dam
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[ke9uw]

Measure which wire goes to the outside shell of the connector, that’s ground.

Chuck Jack Hawley
KE9UW

Sent from my iPhone, cjack

> On Jun 27, 2020, at 9:51 AM, Doug Daniels <[hidden email]> wrote:
>
> Just opened the box on my new KX2, and am about to put powerpoles on the
> power cable. Since both sides of the wire are black, which is the positive,
> the one with the white dashes?
>
> Thanks.
>
> --
>
> --... ...--
> Doug
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
> 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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[Phil Kane-2]

On 6/27/2020 2:22 PM, hawley, charles j jr wrote:

> Measure which wire goes to the outside shell of the connector, that’s ground.

That's about the only way.  Unfortunately I have found two standards for
"zip cord" markings - white stripe on positive, and white stripe on
negative.  Your multi-meter is your friend.

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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[Jim Brown-10]

On 6/27/2020 2:22 PM, hawley, charles j jr wrote:
> Measure which wire goes to the outside shell of the connector, that’s ground.

Not always -- I have at least one consumer product and one piece of pro
test gear that has V+ to the outside of the connector.

73, Jim K9YC
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[Jay Rutherford-3]

You really need to check before connecting a power supply. My Tecsun PL600 charger shows positive on the outside shell. Who ever dreamed that one up?!

73
Jay K3BH

On Sat, Jun 27, 2020, at 20:08, Jim Brown wrote:

> On 6/27/2020 2:22 PM, hawley, charles j jr wrote:
> > Measure which wire goes to the outside shell of the connector, that’s ground.
>
> Not always -- I have at least one consumer product and one piece of pro
> test gear that has V+ to the outside of the connector.
>
> 73, Jim K9YC
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[ke9uw]

All good info about different rigs having reverse polarities on the connector. But this is about the cable for the KX2.
BTW, if you read page 5 of the KX2 manual, under power supply, the manual states that the center pin is + and the striped wire is +. Checking the cable with an ohmmeter is highly recommended...never know when the wire supplier changed something. However I would assume Elecraft would not redesign the socket polarity. So that's reasonably safe.

Jack BMW Motorcycles
Chuck KE9UW
[hidden email]

Sent from my iPad

> On Jun 27, 2020, at 7:12 PM, Jay Rutherford <[hidden email]> wrote:
>
> You really need to check before connecting a power supply. My Tecsun PL600 charger shows positive on the outside shell. Who ever dreamed that one up?!
>
> 73
> Jay K3BH
>
>> On Sat, Jun 27, 2020, at 20:08, Jim Brown wrote:
>>> On 6/27/2020 2:22 PM, hawley, charles j jr wrote:
>>> Measure which wire goes to the outside shell of the connector, that’s ground.
>>
>> Not always -- I have at least one consumer product and one piece of pro
>> test gear that has V+ to the outside of the connector.
>>
>> 73, Jim K9YC
>> ______________________________________________________________
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>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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[Phil Kane-2]

On 6/27/2020 5:12 PM, Jay Rutherford wrote:

> You really need to check before connecting a power supply. My Tecsun PL600 charger shows positive on the outside shell. Who ever dreamed that one up?!

Telephone industry standards have the negative 48V as the "hot" side.

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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[Don Wilhelm]

For Elecraft gear, the shell is always V- (ground).
Other gear may be different.

73,
Don W3FPR

On 6/27/2020 8:08 PM, Jim Brown wrote:
> On 6/27/2020 2:22 PM, hawley, charles j jr wrote:
>> Measure which wire goes to the outside shell of the connector, that’s
>> ground.
>
> Not always -- I have at least one consumer product and one piece of pro
> test gear that has V+ to the outside of the connector.
>
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[ve3gmz]

You guys should be on the air this weekend. Ìts Field Day! Just worked a kh6 with 4 watts and an EFHWD up in a portable situation operating 1BB. Bands are busy. Take advantage.

Brian VE3GMZ



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  Original Message  


From: [hidden email]
Sent: June 28, 2020 12:02 a.m.
To: [hidden email]
Reply to: [hidden email]
Subject: Re: [Elecraft] KX2 power cable polarity?


For Elecraft gear, the shell is always V- (ground).
Other gear may be different.

73,
Don W3FPR

On 6/27/2020 8:08 PM, Jim Brown wrote:
> On 6/27/2020 2:22 PM, hawley, charles j jr wrote:
>> Measure which wire goes to the outside shell of the connector, that’s
>> ground.
>
> Not always -- I have at least one consumer product and one piece of pro
> test gear that has V+ to the outside of the connector.
>
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[Bill Frantz]

My .sig at the bottom says it all. 73 Bill AE6JV

On 6/27/20 at 6:48 PM, [hidden email] (Phil Kane) wrote:

> Unfortunately I have found two standards for
> "zip cord" markings - white stripe on positive, and white stripe on
> negative.  Your multi-meter is your friend.

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