[Heath] SB-230 on the WARC bands?

[Allen Jones]

Hello Ken,

The plate choke in the SB-230 is the same as the one in the SB-200,  part  #45-61,  50uH.  Since it doesn't cause a problem in the 200 I believe I will be safe.

Thanks

Allen, W9DZ





On Wednesday, November 13, 2013 11:12 AM, Kenneth G. Gordon <kgordon2006 at frontier.com> wrote:
 
On 12 Nov 2013 at 20:33, Allen Jones wrote:
>
>
>> Is it safe to use the SB-230 on 17 and 12 Meters?  I know some pre
>> WARC amps have plate chokes that are resonant on one or both of those
>> bands.
>
>Hmmm....that is a very good question!
>
>The only information I can provide for you is that my own SB-200 works just
>fine on those two bands.
>
>17 meters works with the bandswitch on 15, and 12 meters with the
>bandswitch on 10.
>
>Power output and tune-up procedures are the same as those for the
>non-WARC bands.
>
>Could you remove the plate RF choke, short the ends together, and check
>for resonances with a GDO? Doing that would find any resonances within
>ham bands.
>
>Kenneth G. Gordon W7EKB
>
>"Courage is being scared to death but saddling up anyway."--- John   Wayne
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/heath/attachments/20131113/7cb4533e/attachment.html>