[Boatanchors] Should dummy load oil ever need to be changed?

[Ray]

A useful dummy note note which may interest some:

A piece of coaxial cable open or shorted at the far end with a loss 
rating of about 15 db or more at your frequency of interest, will 
provide a very nice dummy load.  It will provide a return loss of about 
30 db (-15db forward loss and -15db reverse loss) .

If you use a piece of cable rated at about 20 db of loss at your 
frequency of interest, you will have a near laboratory quality dummy 
load (40db RL).

Make sure the cable is rated sufficiently for the power level you are 
going to use it with.
Ray, W4BYG


On 8/25/2012 12:09 PM, Bill Cromwell wrote:
> On Sat, 2012-08-25 at 11:45 -0400, Wayne D Anderson wrote:
>> Gentlemen
>>
>> It seems to me that in a hobby that found the use of a lightbulb as an acceptable  load, the Cantenna looks like a pretty good alternative.
>>
>> 73
>> K7WDA
> Hi,
>
> There are some radios that went to war with a light bulb for tuneup.
>
> 73,
>
> Bill  KU8H
>
> ______________________________________________________________
> Boatanchors mailing list
> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Boatanchors at mailman.qth.net
>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>