[Johnson] Ranger Resistor Needed
Jim
jbrannig at verizon.net
Mon Nov 1 18:46:53 EDT 2010
I think you are referring to the Phil Salas, AD5X articles
http://www.ad5x.com/images/Articles/Ranger%20Mods%20RevB.pdf
I did these to my Ranger several years ago and they are great....
Jim
> You don't really have to replace that resistor if you are willing to do a
> simple modification. I don't have the details at hand but the overall
> effect is to considerably reduce the power dissipation in the Ranger while
> eliminating the 30K resistor. I made that change to my Ranger a year ago
> based on information I found on the web. I'll look it up if you want me
> to
> but you can probably get the info faster via Google "Johnson Ranger
> modification".
>
> Don K7FJ
>
>> Brian,
>>
>> Mouser has 30K 20 watt wirewound resistors in a couple of styles. See
>> http://www.mouser.com/Passive-Components/Resistors/Wirewound-Resistors/_/N-7fx9f?Keyword=30k&FS=True
>> for a couple of stocked styles and they also have a non-stock version
>> on the next page (available in single quantity) via order which will take
>> longer. DigiKey
>> also has them but they are non-stock with minimum 100 order.
>>
>> Rodger WQ9E
>>
>> ----------------------------------------
>> From: "BRIAN ROBERTS" <k9vky at verizon.net>
>> Sent: Monday, November 01, 2010 8:52 AM
>> To: johnson at mailman.qth.net
>> Subject: [Johnson] Ranger Resistor Needed
>>
>> Hello Gents--
>> I need to replace the 20 watt 30 K wirewound resistor (R15) in my Ranger.
>> I'd like to find a duplicate to due its mounting arrangement. Supply
>> houses don't carry 30K anymore (25 and 50 are available) and two 15K in
>> series won't fit. Does anyone on the list have a junker Ranger or a
>> parts
>> cache with the 30K 20 watter available? Thanks. Brian K9VKY
>> ______________________________________________________________
>> Johnson mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/johnson
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Johnson at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>
>> ______________________________________________________________
>> Johnson mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/johnson
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Johnson at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>
> ______________________________________________________________
> Johnson mailing list
> Home: http://mailman.qth.net/mailman/listinfo/johnson
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Johnson at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
More information about the Johnson
mailing list