[Amps] Bird 4314B - Overshoot when in peak mode

[Mark Hill <g4fph@mjha.co.uk>]

Folks,

Has anyone else noticed pronounced overshoot on readings taken with the 
above type of Bird when using it in peak mode?

I recently home brewed a peak reading board for use with a Bird dual line 
section with standard 43-series inserts (one for 'F', one for 'R').  The 
card drives a non-Bird model meter (100 uA FSD) factory calibrated with the 
Bird model 43 scale.  When I do my standard 'one CW dot' test, in peak 
mode, my HB card driving the non-Bird meter reads the peak value that you 
might expect.  The Bird 4314B however overshoots by quite an amount (20%+ 
as I recall) on this one dot.  If I send a string of dots, the Bird meter 
settles down after a few to read the same as my HB effort.

Is this a 'design feature' of the Bird, perhaps?  I don't think what I'm 
seeing is anything to do with transceiver/amp PSU regulation causing the 
first dot or two to be actually 20% more RF than the others.

Not sure if the electronic innards of the 4314B are the same as Bird uses 
in its Model 43P or its after market (-400?) kit for the 43?

Regards.

Mark.

********************************************************
Mark Hill - G4FPH
E-mail: g4fph@mjha.co.uk
New web site: www.qsl.net/g4fph
Old pages mirrored on: www.g4fph.freeserve.co.uk

Dipoles resonant on 1940/3700/7080 kHz
2 ele delta loop beam resonant on 14180 kHz

Remember: A Texas Gallon is actually less than a UK one!
********************************************************


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