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Re: DD Mode experimenters in BC?

erwestgard
 

开云体育

DD mode and the ID-1 are an interesting if short branch of the Ham Radio tree.? We get just barely enough usable bandwidth for our trivnetdb simple private browser app to work at scale.? Latency is semi decent for this 100 ms ish.? Our omnis on building tops have good range to our data trailers.??
Hams with one of our counties obsess over security - 1.2 requires an expensive / rare radio.? The RF side is fussy.? Radio setup is fussy.? They make fine FM or DV voice radios.??

In 2022 I will take a pair of used $50 Nanostations every day.? We use these constantly in our events.? My boss asked us to set up an Info Tent a few hundred yards from anything a few weeks back.? A Part 15 mesh Nanostation on 10 feet of TV mast, hunk of Cat 5, https protocol - good to go.?

When the Emergency Manager of our second largest city wants live video from us up on HSIN - the ID-1 is not my first choice.??





Sent via the Samsung Galaxy S21 5G, an AT&T 5G smartphone


-------- Original message --------
From: "Woodrick, Ed" <EWoodrick@...>
Date: 10/22/22 7:55 PM (GMT-05:00)
To: [email protected], Mark Thompson <wb9qzb_groups@...>
Cc: Erwestgard <ewestgard@...>
Subject: RE: [D-STAR23cm] DD Mode experimenters in BC?

I’m going to have to question the “full duplex” concept for the repeater. DD mode has a extremely fast T/R switch time and it doesn’t become hard to just take two ID1s and put them back to back on different frequencies and make them seem as if the are full duplex, but they are actually half duplex.

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From: [email protected] <[email protected]> On Behalf Of Steve Stroh via groups.io
Sent: Friday, October 21, 2022 6:55 PM
To: Mark Thompson <wb9qzb_groups@...>
Cc: Erwestgard <ewestgard@...>; [email protected]
Subject: Re: [D-STAR23cm] DD Mode experimenters in BC?

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Mark:

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Thank you for the pointer and the generosity and foresight of archiving the Yahoo Group. I will spelunk the archives for the info.

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As I related in today’s issue of Zero Retries, I’m 20+ years late to the ID-1 / DD mode party, so I’ll be trying to learn things that you veterans have long forgotten.

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Thanks,

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Steve N8GNJ?

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On Thu, Oct 20, 2022 at 17:53 Mark Thompson <wb9qzb_groups@...> wrote:

Steve -?

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When I converted this 开云体育 group from the original Yahoo group I spent the big bucks to preserve the Membership, Message Log & Files.?
There are numerous messages and also files in the Files section folders some from the early days of D-STAR.?

I remember previous discussion about the ID-1 repeater in BC, however I haven't been able to find any reference to it.?

However, I did find a document in the?Digital Voice (DV) Repeaters & Data (DD) Access Points?folder of the group's Files section regarding a Bent Pipe repeater using two ID-1s.?

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I've also copied, Erik, NY9D who has extensive experience with D-STAR DD (high-speed data) and he has previously posted about using two ID-1s to make a repeater.?

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73, Mark, WB9QZB

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On Thursday, October 20, 2022 at 05:01:38 PM CDT, Steve Stroh <steve.stroh@...> wrote:

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I would like to get in touch with some folks in British Columbia that

built a DD repeater from a pair of ID-1 radios. That repeater, unlike

the "official" Icom DD repeater, was full duplex (because it used the

novel concept of a full time receiver and a full time transmitter).

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I *know* they existed... I just can find ANY mention of them online.

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ANY pointers appreciated, even if just from memory of people or names.

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Thanks,

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Steve Stroh N8GNJ

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Steve Stroh N8GNJ (he / him / his)

Editor

Zero Retries Newsletter -

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Steve Stroh N8GNJ (he / him / his)

Editor

Zero Retries Newsletter -

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