[ARC5] SCR274 field test

[Roy Morgan]

On Jul 18, 2015, at 8:28 PM, J Mcvey via ARC5 <arc5 at mailman.qth.net> wrote:

> ...how can 16.5 amps draw a 130AH battery down to 11v from it's fully charged resting voltage of 12.6v ? ( it recovers on key up)

Note well where you are measuring the voltage.  There may well be IR drop in the leads from your battery to the radio - if you are measuring the voltage at the radio, I’d bet on it.  And especially so if you are getting the radio supply voltage from somewhere other than the battery terminal itself.

If the wire to the radio does not come off the battery itself (and the connectors are bright and shiny inside) you’ll have voltage drop in the vehicle harness.

Roy]

Roy Morgan
k1lky68 at gmail.com
K1LKY Since 1958