Hello Klaus, there are two problems here... First, it looks like the server is very slow, it receives the acks from the client but does not recognize them in time so it starts to poll for a retry. Retries make the mode switch down until communication is established both ways. Does the server have high CPU load? The second problem is that the mode scanning is not operating. For this you must set $scanner = 'S'; in the .pskmail/pskmailrc.pl config file. And of course you need the .pskmail/qrg/freqs.txt file to contain frequencies and modes. Here is the content of the freqs.txt file of PI4TUE: 24925000,10147000,10147000,10147000,18105000, PSK500R,PSK500R,PSK500R,PSK500R,PSK500R, USB,USB,USB,USB,USB, PI4TUE,PI4TUE,PI4TUE,PI4TUE,PI4TUE, Even when the server is not scanning frequencies, it still needs to scan modes. Hope this helps, Rein PA0R =============================================== Hi! I'm about to start a PSKMail server on 14107 MHz. Right now server and client operate locally only on dummy loads. It's basicly working (APRS Igate, Mail in, Mail out), but: In spite of good signal strength communication is always switching down and ending up in MFSK-32. The server will stay in this mode after ~QUIT / ~ABORT. Any hint from the experienced? tnx and 73 de Klaus, dl4oah ----------------------------------------------------------------------------- Server session protokoll of connect - send mail - quit: kl@esprimo:~$ pskmail_server ### Server v. Pskmail_server 1.0.7a. (C) 2010 PA0R 19:28 UTC Jul-27-2010: Program start 19:28 UTC Jul-27-2010: Connected to netherlands.aprs2.net port 1314 19:28 UTC Jul-27-2010: Listening to the radio 19:28 UTC Jul-27-2010: Send>APRS-IS:DL4OAH-3>PSKAPR:@271928z5227.75NP00944.50E&PSKmail 1.0.7a server beacon:DL4OAH 19:31 UTC Jul-27-2010: > Unproto: DL4OAH:26 !5227.75N/00944.50E-0.5.4 K3 20m 1W busy... busy... Message_out:QSL DL4OAH de DL4OAH-3 E15B- 19:31 UTC Jul-27-2010: Send>APRS-IS:DL4OAH>PSKAPR,TCPIP*:!5227.75N/00944.50E-0.5.4 K3 20m 1W I: ParseMode: ARQ new modem set to PSK250 I: apply: RSID: PSK500R @ 694 Hz 19:33 UTC Jul-27-2010: > Connect: DL4OAH:1024 DL4OAH-3:24 6 Requested Server Tx modenumber =6 txmode now PSK500R read from .rxid =PSK500R= default modem = Final connect status: Asymmetric link:1 , tx mode: PSK500R , rx mode: PSK500R 19:33 UTC Jul-27-2010: Added DL4OAH to link list DL4OAH->DL4OAH-3 19:33 UTC Jul-27-2010: 0!kDL4OAH-3:24 DL4OAH:1024 509E46!s C7BA 19:33 UTC Jul-27-2010: 19:33 UTC Jul-27-2010: Send>APRS-IS:DL4OAH-3>PSKAPR,TCPIP*::PSKAPR :GATING DL4OAH I: ParseMode: ARQ new modem set to PSK500R I: ParseMode: ARQ new modem set to PSK500R 19:33 UTC Jul-27-2010: > Status : last=0 good=0 end=0 missing= Server's rx s2n: 100 , averaged: 66.6666666666667 Client's rx s2n: 100 , averaged: 66.6666666666667 TX=PSK500R , RX=PSK500R , T=0 LQ=6 BL=5 OK, Status received ~ABORTSEND 19:33 UTC Jul-27-2010: Call DL4OAH o.k. 19:33 UTC Jul-27-2010: Connected to DL4OAH Stationname =DL4OAH Mail count =0 ::DL4OAH-3 Pskmail_server 1.0.7a-19:33:51-I> 19:33 UTC Jul-27-2010: 0!!DL4OAH-3 Pskmail_server 1.0.7a-132AC0!"9:33:51-I> 4C6A6!s" 071B 19:33 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK500R I: ParseMode: ARQ new modem set to PSK500R 19:34 UTC Jul-27-2010: > Status : last=0 good=2 end=2 missing= Server's rx s2n: 100 , averaged: 77.7777777777778 Client's rx s2n: 100 , averaged: 77.7777777777778 TX=PSK500R , RX=PSK500R , T=0 LQ=4 BL=5 19:34 UTC Jul-27-2010: 6!s" 071B 19:34 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK500R I: ParseMode: ARQ new modem set to PSK500R 19:34 UTC Jul-27-2010: > Data: 1 ~CSEND H4sIAAAAAAAAAOOqC3b1c+EKybdSyM5xKCjNNjIwMNBLSeUKLk3KSk0us 19:34 UTC Jul-27-2010: > Data: 2 VJwz03MzDHkglC6IakV JXpcelwArFXEbTgAAAA= -end- 19:34 UTC Jul-27-2010: > Status : last=2 good=2 end=2 missing= Server's rx s2n: 100 , averaged: 85.1851851851852 Upgrading RX speed newrxmodenumer=7 Amodes:PSK500 Client's rx s2n: 100 , averaged: 85.1851851851852 Try Turbo upgrade of TX mode TX=PSK500R , RX=PSK250 , T=0 LQ=0 BL=5 Up-speed to TX:PSK250 , RX: PSK250 ~CSEND 19:34 UTC Jul-27-2010: Receiving compressed mail H4sIAAAAAAAAAOOqC3b1c+EKybdSyM5xKCjNNjIwMNBLSeUKLk3KSk0usVJwz03MzDHkglC6IakV JXpcelwArFXEbTgAAAA= H4sIAAAAAAAAAOOqC3b1c+EKybdSyM5xKCjNNjIwMNBLSeUKLk3KSk0usVJwz03MzDHkglC6IakV JXpcelwArFXEbTgAAAA= ~SEND To: kl@xxxxxxxxxx Subject: Gmail1 Gmail1-Text. . ~SEND To: kl@xxxxxxxxxx Subject: Gmail1 Gmail1-Text. . 19:34 UTC Jul-27-2010: SMTP TLS requested, no debug info available.. 19:34 UTC Jul-27-2010: Connection open... ::Receiving email 19:34 UTC Jul-27-2010: 0!#Receiving email 49B57!s#""B7CB 19:34 UTC Jul-27-2010: End of mail receive... I: ParseMode: ARQ new modem set to PSK250 I: ParseMode: ARQ new modem set to PSK250 0 Sending poll with havesoh: 0, maxidle: 12.8608652154604, Shortidle: 9.28716691335042, currentidle: 10 19:34 UTC Jul-27-2010: 7!s#""B7CB 19:34 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK250 I: ParseMode: ARQ new modem set to PSK250 1 Sending poll with havesoh: 0, maxidle: 10.9423076923077, Shortidle: 8.53846153846154, currentidle: 9 newrxmodenumer=6 Amodes:PSK500R Set retry mode to TX=PSK250 , RX=PSK250R 19:35 UTC Jul-27-2010: 6!s#""66CA 19:35 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK250 I: ParseMode: ARQ new modem set to PSK250R 1 Sending poll with havesoh: 0, maxidle: 10.9423076923077, Shortidle: 8.53846153846154, currentidle: 9 19:35 UTC Jul-27-2010: 6!s#""66CA 19:35 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK250R I: ParseMode: ARQ new modem set to PSK250R 2 Sending poll with havesoh: 0, maxidle: 13.8333333333333, Shortidle: 9.66666666666667, currentidle: 10 newrxmodenumer=5 Amodes:PSK250R Set retry mode to TX=PSK250R , RX=PSK125R 19:35 UTC Jul-27-2010: 5!s#""55CA 19:35 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK250R I: ParseMode: ARQ new modem set to PSK125R 2 Sending poll with havesoh: 0, maxidle: 13.8333333333333, Shortidle: 9.66666666666667, currentidle: 10 19:35 UTC Jul-27-2010: 5!s#""55CA 19:35 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK125R I: ParseMode: ARQ new modem set to PSK125R 3 Sending poll with havesoh: 0, maxidle: 21.6428571428571, Shortidle: 12.7142857142857, currentidle: 13 newrxmodenumer=4 Amodes:MFSK32 Set retry mode to TX=PSK125R , RX=MFSK32 19:36 UTC Jul-27-2010: 4!s#""84CB 19:36 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK125R I: ParseMode: ARQ new modem set to MFSK32 19:36 UTC Jul-27-2010: > Status : last=3 good=2 end=2 missing=# Server's rx s2n: 100 , averaged: 66.6666666666667 Client's rx s2n: 97.7777777777778 , averaged: 65.9259259259259 TX=PSK125R , RX=MFSK32 , T=0 LQ=6 BL=5 :: Message sent... 19:36 UTC Jul-27-2010: 0!#Receiving email 49B50!$ Message sent... D8F44!s$""#3A85 19:36 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK125R I: ParseMode: ARQ new modem set to MFSK32 0 Sending poll with havesoh: 0, maxidle: 20.1788975000382, Shortidle: 12.1429843902588, currentidle: 13 19:37 UTC Jul-27-2010: 4!s$""#3A85 19:37 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK125R I: ParseMode: ARQ new modem set to MFSK32 19:37 UTC Jul-27-2010: > Data: 3 ~QUIT ~QUIT 19:37 UTC Jul-27-2010: > Status : last=3 good=2 end=2 missing=#$ Server's rx s2n: 100 , averaged: 77.7777777777778 Client's rx s2n: 98.8888888888889 , averaged: 76.9135802469136 TX=PSK125R , RX=MFSK32 , T=0 LQ=4 BL=5 ~QUIT 19:37 UTC Jul-27-2010: Disconnect received ~QUIT 19:37 UTC Jul-27-2010: Disconnect received 19:37 UTC Jul-27-2010: Listening to the radio 19:37 UTC Jul-27-2010: 0!dB419 19:37 UTC Jul-27-2010: I: ParseMode: ARQ new modem set to PSK125R I: ParseMode: ARQ new modem set to MFSK32 I: apply: RSID: MFSK32 @ 694 Hz 19:38 UTC Jul-27-2010: > Abort -- http://pa0r.blogspirit.com