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Re: Power Antenna 'Sense' Line Current Drain

>From: "M Barry Ritchey" <MBRITCH@domain.elided>
>Date: 13 Aug 1996 08:50:42 -0700
>Subject: Power Antenna 'Sense' Line Current Drain
>
>
>     A question for a radio specialist in the group:
>
>     How much current does the power antenna 'sense' line
>     (the line from the radio that tells the antenna to raise
>     when you turn on the radio) draw when the antenna is in
>     the UP position?
>
>     I'd like to install a toggle switch to tame some of the
>     antenna's hyperactivity. Three options would be nice.
>     Options (switch positions):
>     1. As is. Automatically up and down as radio power cycles.
>     2. Always down. I'll just open the sense line.
>     3. Always up. 12 volts always applied to the sense line.
>     If the line draws more than 100ma when the antenna mast is
>     up, then I'll have to rule this option out and live with the
>     'yo-yo'.
>
>     I know one way to find out (DMM in series), but I thought
>     I'd ask first (out of laziness).
>
>     Thanks,
>             Barry Ritchey
>             '90 325iX
>             mbritch@domain.elided

I installed a switch to "open" the sense line so that I could have the
antenna down while listening to tapes or CD's. It eliminated some up/down
action and keeps the car looking trim unless listening to a station....

FWIW.....

Norm


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Norm Grills  (grills@domain.elided)            BMW CCA # 57310
Plano (Dallas suburb) TX, USA                BMW MOA # 19040

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'85 635        My pride and joy (4 wheel version)
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