dear howard
would be nice if you write a "HOT TO ....." file and load it up in the filearea
greetz
dg9bfc
  ----- Original Message ----- 
  From: Howard Z. 
  To: digitalradio@yahoogroups.com 
  Sent: Wednesday, December 03, 2008 1:51 AM
  Subject: [digitalradio] You Have Mail Re: How Can We Push Emcomm Messages to 
the Field?


  > Could you comment further on your experiences with RFSM?
  > 
  > 73,
  > 
  > Rick, KV9U
  > 

  My local MARS group has been experimenting with RFSM8000.
  Like MIXW, it is made in Russia, and the author wants to earn some 
  money selling it. Free trial licenses are available.

  RFSM8000 uses the Mil-Spec modem - I forgot the modem number - but 
  it is the same one used by MARS/ALE. It is supposed to reach 
  8000bps under good conditions on HF. I typically experience under 
  600bps. Some say its techniques to get high speed make it illegal 
  for US Hams. European HAMs are using it. MARS does not use the HAM 
  bands, so its OK for MARS.

  Just because MARS is experimenting with it, does not mean it is 
  adapted by MARS or that it is even a desirable mode. MARS plays 
  with everything and seems to like having almost every tool in their 
  tool-box. MARS even has CW nets.

  RFSM8000 has three functions:
  1. keyboarding NETs - somewhat similar to PSK31. Since we have 
  PSk31, MT63, OLIVIA, and other modes that give similar functionality.
  2. file transfers from one user to another user. Most think EasyPal 
  is better. Maybe when we get further along in the sunspot cycle, 
  RFSM8000 will achieve higher speeds and be the file x-fer method of 
  choice? I don't know - time will tell.
  3. Email Server. This is the most interesting function. Let's say 
  a disaster area has no internet and can reach an RFSM8000 email 
  server which has internet capability. Then those without internet 
  can connect (one at a time - similar to a winlink RMS) to send and 
  receive email. The Email server sends all users emails using the 
  single server's email address. The subject will start with the 
  originator's call-sign. When the recipient of the email hits reply, 
  he needs to remove the "Re:" from the subject so the subject starts 
  with the call-sign. The reply email goes back to the email-server's 
  email address, and is routed to the appropriate user's mailbox for 
  pickup by that callsign over HF radio. The simplicity of this 
  compared to Winlink is that there are no CMS email servers that it 
  needs to reach. It is not a huge email system. All that needs to 
  be reachable on the internet is the SMTP server of the ISP the email 
  server is using, and the POP3 server the email server is using. The 
  POP3 server can be ISP's email, or some other email, like gmail, 
  gmx, or any other free email service on the web which uses POP3. 
  Currently RFSM8000 can not make SECURED pop3 connections, and many 
  email systems on the internet do not allow unsecured pop3 
  connections. So this limits one as to which free emails one can 
  use. Whether the RFSM8000 email server has internet or not, 
  RFSM8000 users can send mail to CALLSIGNS which connect via HF to 
  the RFSM8000 email server. MARS preferred message handling system 
  is WINLINK. If Winlink is broken or unreachable this can be an 
  option. However, it is not clear to me what kind of disaster would 
  make Winlink unusable.

  Now, on my computer, I have a solution for how to connect to a 
  SECURED pop3 email provider. I have hmailserver running on my 
  computer - it is a SMTP and POP3 email server. RFSM8000 checks its 
  email by going to localhost POP3 unsecured. The hmailserver 
  routinely sucks in mail into the account from a secured POP3 email 
  server - such as COMCAST's POP3 email server. hmailserver can use 
  secured and unsecured pop3 email servers on the internet, and can 
  accept secured and unsecured pop3 connections. But, it may be a bit 
  much for the average ham to install and configure.

  So the initial lure is 8000bps file transfers and 8000bps email 
  transfers. We are not seeing such high speeds under current NVIS 
  conditions.

  Howard



   

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