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Forum: Marine Electronics

28-03-2012, 10:31

Replies: 127

HF SSB Ham Radio Option

Views: 33,170

Posted By donradcliffe

Re: HF SSB Ham Radio Option

I believe that far more cruisers have SSB email functions than have HF/DSC. In my experience, the Winlink/Sailmail email is a reliable form of communications offshore if you have 15 to 30 minutes to...

Forum: Marine Electronics

28-03-2012, 10:20

Replies: 127

HF SSB Ham Radio Option

Views: 33,170

Posted By donradcliffe

Re: HF SSB Ham Radio Option

I'm really happy that someone who is familiar with the reality of commercial ship comms is participating in this discussion, and I have heaps of questions for you. For starters:

When you say...

Forum: Marine Electronics

25-03-2012, 22:34

Replies: 127

HF SSB Ham Radio Option

Views: 33,170

Posted By donradcliffe

Re: HF SSB Ham Radio Option

For a pretty good description of GMDSS and DSC, particularly its flaws, see

GMDSS information by Dunstan and Associates (https://www.gmdss.com.au/)

Reading about the current status of MF/HF DSC,...

Forum: Marine Electronics

24-03-2012, 18:42

Replies: 127

HF SSB Ham Radio Option

Views: 33,170

Posted By donradcliffe

Re: HF SSB Ham Radio Option

AllanR, you go to great lengths to promote the use of marine SSB's over modified ham rigs, but a lot of your arguments are pure fantasy. A little disclosure is in order--do you make money selling...

Forum: Marine Electronics

25-09-2011, 09:00

Replies: 127

HF SSB Ham Radio Option

Views: 33,170

Posted By donradcliffe

Re: HF SSB Ham Radio Option

Before you go out and spend twice as much on a type-approved radio, you should understand a bit more about the world of SSB.

First, transmit power is not that important--its what radiates from...

Forum: Marine Electronics

24-09-2011, 10:05

Replies: 127

HF SSB Ham Radio Option

Views: 33,170

Posted By donradcliffe

Re: HF SSB Ham Radio Option

Not so fast, Dave.

1. Most Marine HF units can listen on the USB ham bands, and it is not illegal. Not all have LSB capability.

2. ANY radio can render a marine channel unusable. It doesn't...

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