Digital communications talk for Hawaii hams
KH6FHI Joe Tabrah
For the EARC member's information... Aloha, Joe KH6FHI ---------- Forwarded message --------- From: ARRL Members Only Web site <memberlist@...> Date: Thu, Jul 23, 2020 at 1:08 PM Subject: Digital communications talk for Hawaii hams To: <joetabrah@...> Aloha, Lots of education opportunities popping up on ZOOM these days. Joe Tabrah (KH6FHI) has stepped forward to organize a session on high speed VHF/UHF FM digital communications. It is headlined by an overview of adapters by the designer of the cards many Hawaii hams are using in repeaters and Winlink equipment. Here’s the announcement of what’s planned to help help more Hawaii stations get on digital. QUOTE Aloha all, ARES is planning a zoom information and training session for Saturday, 8 August at 10:00 AM to help local amateurs equip and program their VHF/UHF radios to operate Winlink and other digital modes. For many of us connecting our radios to a computer to use Winlink seems like a major project. On the HF side, transceivers with inbuilt sound cards make it simpler. Most ham software operates with audio frequencies in the range of voice communications; A good match with HF Winlink! Amateur Radio FM VHF/UHF equipment is capable of “Hi-Fidelity” audio but most transceivers have audio circuits to optimize voice communications. This removes high frequencies unwanted for person-to-person communications. There is a class of Japanese transceivers designed for VHF/UHF packet radio with an audio path that skips the voice optimization allowing “Hi-Fi” frequencies to be transmitted. It is called 9600-baud packet, a name that was suitable when hardware TNC modems were used. With today’s computer sound card modems, more appropriate names for the two modes would be NARROW (voice) and WIDE (high speed digital). ARRL ARES has arranged for Masters Communications to give us an overview of the Digital Radio Adapter (DRA) series used by many for Winlink communications. Kevin Custer (W3KKC), the designer of these cards, will meet with interested Hawaii hams on ZOOOM Saturday, August 8th, at 10:00 AM. Interested? Send an email requesting an invitation to, dra-zoom@... For Amateurs wanting to know what audio adapters and cables to use with their VHF/UHF equipment, advice can be useful. To help with that, attending the session will be four Hawaii Amateurs with digital adapter experience. Kauai Jim Pilgram (NH6HI), who recommended Kevin’s repeater adapters as a candidate for Winlink audio. Oahu Van Malan (NH7IT), a member of the Winlink Development Team Peter Matsunaga (KH6DK), a BETA tester for these adapters Big Island Jim Huntley (WH6FQI), a BETA tester for these adapters These guys are already helping many Hawaii hams get on Winlink. Attendees will have an opportunity to meet them and discuss implementation. 73 de Joe Tabrah, KH6FHI UNQUOTE -------------------------------------------------------------------- ARRL Pacific Section Section Manager: Joseph Speroni, AH0A ah0a@... -------------------------------------------------------------------- To unsubscribe from messages, go to: http://p1k.arrl.org/oo/c76c8456bb3a9a96548b42b03c731966
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