Came from me. I apologize for my feeble old mind. Shudda
looked at the several Bird manuals around here.
Like many of us old timers I have several different Bird setups.
As someone else mentioned, there are many versions that
show up in the various hamfest and e-Bay venues.
Never rely on a used element ... being round they've almost
certain to have rolled and bounced of the floor. They're easily
damaged.
I have several double line-section castings that I use in my
station to simultaneously monitor both forward and reflected
power at the same. At one time I had close ties to the FBI's
western US operations and their stations -always- had double
meters with dual-element castings on separate panels
Still, the Bird product line has a number of "gotcha's" lurking
to catch the unwary. My case has a dedicated 50 ohm length
of line that is a measured length that's calculated to include
the length that includes the length within the casting ... at
147.00 MHz where most of my measurements are taken.
All of mine are fitted with "N" connectors, etc.
Enough, already ... I apologize for the 20% error figure ...
It was unintentional. (:-((
73!
K0PP
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