HF radio emails

Submitted: Wednesday, Apr 24, 2002 at 00:00
ThreadID: 1013 Views:2099 Replies:5 FollowUps:2
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i have a barrett 950 hf unit has anyone fitted a modem and connected it to a laptop for online access on the move ? does this work efficiently or is it slow,also does it work almost anywhere like the radio?

any assistance is greatly appreciated.
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Reply By: Andrew Donald - Wednesday, Apr 24, 2002 at 00:00

Wednesday, Apr 24, 2002 at 00:00
Perhaps you could ask the manufacturer of the units in question about the feasability of this and let everyone know the results. I for one would be interested.
AnswerID: 3056

Follow Up By: Nigel - Wednesday, Apr 24, 2002 at 00:00

Wednesday, Apr 24, 2002 at 00:00
I'm not sure about barrett, but the codan modems aren't compatible with the current available public email over HF services. The more common PACTOR-II modems are also cheaper than the codan modems. See the links I've posted to this thread for more details.
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FollowupID: 1197

Reply By: Nigel - Wednesday, Apr 24, 2002 at 00:00

Wednesday, Apr 24, 2002 at 00:00
You do web browsing over HF, but you can certainly send/receive email. Most HF modems run at 2400 bps so are fairly slow. Codan's more expensive modems claim higher speeds but that would depend on condtions. Penta Comstat run a SeaMail service that I think is also available to land mobile users. It isn't cheap as data requires dedicated HF channels and tends to take more time than a quick chat.
AnswerID: 3057

Reply By: Nigel - Wednesday, Apr 24, 2002 at 00:00

Wednesday, Apr 24, 2002 at 00:00
Check out this website also http://www.pca.cc/EMAIL%20Services/SailMail_Introduction.html
AnswerID: 3058

Reply By: Nigel - Wednesday, Apr 24, 2002 at 00:00

Wednesday, Apr 24, 2002 at 00:00
One more link - this one has the modems available in australia - http://www.pca.cc/SCS/SCS_Intro.html
Keep in mind that Barrett may also have a modem available but you will need to check if it is PACTOR-II compatible if you intend to subscribe to a service that uses PACTOR-II.
AnswerID: 3059

Reply By: Guy North - Thursday, Apr 25, 2002 at 00:00

Thursday, Apr 25, 2002 at 00:00
Tim
Yes I have a Codan and I have connected a laptop to the Codan to send
what is called "page calls".
Page calls are NOT emails.
It works well but the baud rate and arror checking does not allow me a faster transmission
than 300 Bauds per second.
Plus under the Australian Communication Act, you'll need a special licence to operate
such data on any frequencies.
Technically anyone with a bit of knowledge can send a data call on HF.
But if it is illegal think about the consequences.
If you upset other users by long email download I guaranty you, you'll be in troubloe in matter
of hours.
Guy
AnswerID: 3109

Follow Up By: Nigel - Sunday, Apr 28, 2002 at 00:00

Sunday, Apr 28, 2002 at 00:00
It's not illegal to send data on HF. It is illegal to send data on a channel licensed by the ACA for voice only (selcalls excepted). No commercial operator would be silly enough to try to run an email service over top of a voice channel, they use channels assigned by the ACA for data transfer.
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FollowupID: 1273

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