Re: [digitalradio] Compressing Data

2009-08-01 Thread Rein Couperus
requires ARQ in all cases. 73, Rein PA0R -Ursprüngliche Nachricht- Von: Stelios Bounanos digra...@enotty.net Gesendet: 23.07.09 16:23:18 An: digitalradio@yahoogroups.com Betreff: Re: [digitalradio] Compressing Data On Thu, 23 Jul 2009 09:45:54 +0200, Simon (HB9DRV) simon.br

Re: [digitalradio] Compressing Data

2009-08-01 Thread Stelios Bounanos
On Sat, 01 Aug 2009 14:52:10 +0200, Rein Couperus r...@couperus.com said: PSKmail uses normal zip compression and B64 encoding. On small files with english text the compression reached by using varicode alone is better. That is why I abandoned compression for email text. Also, when you

Re: [digitalradio] Compressing Data

2009-07-23 Thread Rick W
Is it possible to compress a file and lose even one bit during the transfer and still have something usable on the receiving end when you uncompress? Normally, you must use ARQ to insure perfect copy. Even MT63 or Olivia can take a hit every so often. 73, Rick, KV9U Simon (HB9DRV) wrote:

Re: [digitalradio] Compressing Data

2009-07-23 Thread Simon (HB9DRV)
Depends on the compression, but with ZIP - no, one lost bit and you're - lost! Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: Rick W mrf...@frontiernet.net Is it possible to compress a file and lose even one bit during the transfer and still have something