On 26 apr, 13:41, Larry <no...@[EMAIL PROTECTED]
> wrote:
> joost<joost.ja...@[EMAIL PROTECTED]
> wrote in news:b1a9e798-612a-4ad9-96fc-
> a630e4f09...@[EMAIL PROTECTED]
>
> > Hi all,
>
> > I=B4m planning to build a DC block for the SSB ground strap. The
article=
> > Marine Grounding Systems,http://www.sailmail.com/grounds.htm,
> > discusses how to make this and suggests the type of capacitor to use.
> > It=B4s the Type X7R Monolithic Ceramic capacitor, 0.15uF, 100 volt.
> > Unfortunately I can only obtain the 50 volt version in the place where
> > I am now (Whangarei, New Zealand). Are there any opinions on whether
> > this will also suffice? I=B4m transmitting using a 100W Icom 718 SSB
> > transceiver.
>
> >JoostJager.
>
> Why do it all over again? The tuners, such as the Icom AT-140, already
> have DC blocking capacitors built into them between the tuner and its RF
> Ground terminal. Why put another one in series with the one already in
th=
e
> tuner??
I have a AH-4 tuner and I=B4m sure that it has no blocking caps. I can
measure that a few milliamps of ground current are flowing through the
tuner, hull and engine block back to the battery when I switch on some
lights. This caused serious electrolysis problems on my prop and hull.
|
