[Boatanchors] HELP-Identify Bird Dummy load

[mikea]

On Thu, Sep 15, 2011 at 03:46:33PM -0400, Harold Hairston wrote:
> Some years back, I acquired a Bird Dummy load from an estate.the ID Tag has the following information
> 
> DUMMY LOAD ELECTRICAL
> DA-412A/U
> SERIAL    001
> BY CONTRACTOR
> BIRD ELECTRONIC CORP.
> CLEVELAND, OHIO
> ORDER NO. DAAB05-70-C-1243
> .                    U.S.
> 
> It is quite heavy and the overall dimensions are 14"L X 6"W X 8.25" H. It Is basically a cylinder with cooling fins that make it rectangular. I can provide  pictures. Can any one help me determine the power handling capacity of this device. It works fine.
> 

A quick Google search led me to 

<http://books.google.com/books?id=BNIXAAAAYAAJ&pg=SL5-PA7&lpg=SL5-PA7&dq=%22DA-412A/U%22&source=bl&ots=KST6lMWWR_&sig=YnEFp08evJT5KxXYM1rRhbXZIXM&hl=en&ei=NVhyTs2lHorDsQKy_4z2DA&sa=X&oi=book_result&ct=result&resnum=1&sqi=2&ved=0CBgQ6AEwAA#v=onepage&q=%22DA-412A%2FU%22&f=false>

which indicates that it's good for 600W continuous or 900W for no more
than 15 minutes, DC to 3 GHz, with VSWR less than 1.2 over that range. 

Nice. 

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin