[aprssig] HT-220 HT's for APRS
Brian B. Riley brianbr at mac.comFri Jul 20 03:39:27 UTC 2007
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I had a Midland 13-509 (220 MHz) that was the backbone link on a very busy packet node literally wear the arms off the relay the amazing thing was that was even working for the last week before it finally failed. --- cheers ... 73 de brian riley, n1bq , underhill center, vermont <http://web.mac.com/brianbr/> Tech Blog <http://www.wulfden.org/TheShoppe.shtml> Home of the K107 Serial LCD Controller Kit FT817 Power Conditioner Kit Tab Robot Laser Tag Kit MSP430 Chips and Connectors Propeller Robot Controller SX48 "Tech Board" Kit On Jul 19, 2007, at 10:35 PM, Doug Younker wrote: > > > Stephen H. Smith wrote: > >>> >> Why would it matter if the unit uses mechanical relays or >> electronic switching for PTT? > > > As long as the switching time is manageable, I don't think it makes > a difference. Azdens must have been a good buy when the old boys > who pioneered packet radio in this part of Kansas built their > network, because several where put into packet service 19-20 or so > years ago. They use T/R relays and at least one in now in APRS > service, relay still clicking it's little ole' heart out. At a more > relaxed pace now, since it no longer passes PBBS traffic. :) > Doug, N0LKK > > _______________________________________________ > aprssig mailing list > aprssig at lists.tapr.org > https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig
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