From mboxrd@z Thu Jan 1 00:00:00 1970 From: chuck gelm Subject: Re: kenwood radio & numeric data Date: Tue, 12 Oct 2004 12:05:24 -0400 Sender: linux-hams-owner@vger.kernel.org Message-ID: <416C00C4.3060002@gelm.net> References: <200410121714.52100.alexandre.chappaz@data-tools.com> Reply-To: chuck@gelm.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <200410121714.52100.alexandre.chappaz@data-tools.com> List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: alexandre.chappaz@data-tools.com Cc: linux-hams@vger.kernel.org, =?ISO-8859-1?Q?Andr=E9_HONIG?= chappaz alexandre wrote: >Hi guy > >I've got a new question for U if you've got time to thing of it.....I wrote >yesterday to get informations about the Kenwood tm700... radio & Tnc.... Well >I think I wont manage to achieve what I want using the internal TNC...... >That's why I write again to ask if anyone could give a little help for >choosing a nice modem (either hardware or software with a sound card) to >transmit numeric data over radio with the smallest delay possible....... The >"packet radio" protocol limits the use I want to have because the goal for me >would be to have a constant data stream over the radio. So if someone knows >what kind of material i should use it would be really helpful..... > >Thanks a lot > >Alex > > Hi, Alex: I have questions also. Your goal seems to be: "have a constant data stream over the radio". I do not think that it matters that the data is numeric or other. Why do you use radio? Why do you use Amateur Radio? Why do you use AX.25? Would 802.11b ( 11 Mbps ) be close enough to 'constant' ? The closest thing I am aware of that supports 'constant data stream', or at least constant small delay, is ATM. If you want 'constant', you need 'full duplex'. i.e. You need full duplex radios. Perhaps a 'dual bander' capable of full duplex would suit your goal. Regards, Chuck