John VE5MU wrote: > I live at a higher latitude than many folks There are times up here that > nothing will > decode PSK despite the fact the band is open and active.
I'm very glad you brought this up to the group John. High latitude path distortion is one of the best examples of why we should use and appreciate the more robust modes more often; especially Olivia and it's derivatives. We all see the same instability on the majority of signals coming over the pole regardless of ones location (obviously more common in your case) and it's also quite common on low-latitude (spread-F) paths. Even a small amount of ionospheric "agitation" can cause throughput problems. Spread-F, multipath and other types of ionospheric instability can happen anywhere, anytime. This seems to confuse some PSK operators in that they can't understand why the print is so bad when signals are so strong. The phase meter is a good indicator of instability; the spokes in the meter tend to deviate wildly instead of staying straight and vertical. I recently had a QSO with JA1RZD on MFSK16 and I captured his QSO with another station just a few minutes later on PSK31. I think the text below speaks for itself. Path distortion was moderate, but was enough to cause problems with the narrow mode. I think PSK31 is a superb spectrum friendly, weak signal mode. But like other narrow modes it cannot overcome certain types of path instability as well as others. Thanks for mentioning this John. I hope others take the time to switch modes now and then to overcome some of the path issues we run into. Good reason to experiment and become familiar with other modes. Tony -K2MO (JA1RZD on MFSK16) K2MO K2MO de JA1RZD JA1RZD Roger Tony. Tnx for the report. The WX here is fine and temp is 7 C. Here is my setup: Transceiver : IC-746 with IC-PW1 amp at 250 watts on PSK31 350 watts on MFSK 700 watts on RTTY Antenna : Five element tribander for 20, 15, 10 meter bands and add on rotary dipole for 40 m. Four element dual bander for 17 and 12 meter bands Software : MMVARI by JE3HHT Interface : Home brew PC : Celeron CPU 2GHz, RAM 1GB I would like to exchange QSL cards via the bureau. If you cannot use the bureau, send me your card durectly. I am OK on QRZ.com. BTU K2MO Tony de JA1RZD KN K2MO K2MO de JA1RZD JA1RZD Tnx for the Contact, Tony. I hope to see you soon on the air. Thank you very much for the QSO. Best 73 and Sayonara from Tokyo Japan. K2MO Tony de JA1RZD sk .... CQ CQ CQ CQ DX DE JA1RZD JA1RZD JA1RZD Q CQ CQ CQ DX DE JA1RZD JA1RZD JA1RZD CQ CQ CQ CQ DX DE JA1RZD JA1RZD JA1RZD Pse kkk (JA1RZD on PSK31) DX DE JA1RZD JyyRZD JA1RrtD CQ rCQ CQ a a D. JA1RZD fn yRZD JAs RZD CQ Ct CQ Cm 1X DE JA1"CD JA1R= - JA1kZD Pseepkk anr n e kRe ea ti e -Vet: pis o o e = v,g noto mi_ e.ee)nee.ht QR} zRZ QRZ7e J ?RZa 1Rtel JeÉRZk k N W9NCQ de JA1RZD JA1R dD? Good a ternoon 'a. lhank yqu ve msch fo your seply. Yout sigdl R-Q ns E49 u4949. Mame is ben Ken KeeKen. My QTH is Nisö Tok o City, Nisé Toky ity, Nishi ToFyo City, ×t 2) km west of central Tokyo. G etd Lonator is PM95sr wae9tesr BTU WVNCW de JA1ROV KNÄti eÏZhe e on n Ae
