K1 Reverse Polarity protection/battery fusing?

[ARDUJENSKI]

For  about a year I have been operating my K1 strictly battery power.  I
have a barrel connector attached to a pair of red/black wires with red/black  
alligator clips to connect to the battery. As my eyesight is getting poor  I
do not want to take the remote chance I can apply reverse polarity.
 
The manual (Section 11 OPERATION, Connections, Power Supply) only  states
to install a 2 amp fuse but not sure if this is the best method
 
I would appreciate recommendations as to whether the 2 amp fuse will  
suffice or if some sort of diode should be added
 
Thank you
 
Alan KB7MBI
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[Don Wilhelm-4]

  Alan,

If you check the K1 schematic, you will find there is already a reverse
polarity protection diode installed.  It is D16.
That will not protect the wire, but it will protect the K1.

73,
Don W3FPR

On 9/22/2010 4:05 PM, [hidden email] wrote:

> For  about a year I have been operating my K1 strictly battery power.  I
> have a barrel connector attached to a pair of red/black wires with red/black
> alligator clips to connect to the battery. As my eyesight is getting poor  I
> do not want to take the remote chance I can apply reverse polarity.
>
> The manual (Section 11 OPERATION, Connections, Power Supply) only  states
> to install a 2 amp fuse but not sure if this is the best method
>
> I would appreciate recommendations as to whether the 2 amp fuse will
> suffice or if some sort of diode should be added
>

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