[C320-list] Ham radio (or SSB) antenna

[Robert Seastream]

This link http://www.sailmail.com/grounds.htm addresses marine 
grounding more thoroughly.

Bob

On Mar 29, 2007, at 5:58 PM, Robert Seastream wrote:

> There are three grounds to consider here; AC, DC, and RF ground.  It 
> strikes me that if the AC and DC grounds aren't made common (tied 
> together) from the factory, there may be reasons.  I'd consult 
> Catalina before arbitrarily tying these grounds together.  If you've 
> seen no ill effects you could carry on, but I'd call Catalina to be 
> safe.
>
> My understanding is that the mast and associated rigging are usually 
> grounded to the boats' DC ground, and that marine HF radio 
> installation grounds (grounding plate and/or copper straps) share that 
> ground as well.
>
> Bob
>
> On Mar 29, 2007, at 4:51 PM, Dave Anderer wrote:
>
>> When I looked at his last year on my boat (#642), the AC and DC 
>> grounds were not tied.  (I did tie them myself.)
>>
>> I don't *think* the rigging is tied to anything.
>>
>>
>> On Mar 29, 2007, at 4:28 PM, Robert Seastream wrote:
>>
>>> Hmm...never occurred to me that the backstay wouldn't necessarily  
>>> have to be insulated.  Might be a problem transmitting at dockside 
>>> if tied into shore power, though.  I don't know if the AC ground and 
>>> the DC ground (engine/backstay/etc.) are common.  I'm looking 
>>> towards using either an IC-735 or IC-7000 with an autotuner on 
>>> trips.
>>>
>>> Bob Seastream
>>> 'Intuition' hull 906
>>
>>
>