Re: [amsat-bb] Band designators, Modes
We have been using the term "Mode K" to describe 21 MHz uplink/29 MHz downlink because that is what AMSAT called it when it first came into use in 1987. Similarly, the terms "Mode A" and "Mode B" came into use in 1974 because that is what the engineers who designed AMSAT-OSCAR 7 called them. AO-7 actually has four modes: Mode C is a low-power version of Mode B, and Mode D is "transponder off." Then came Fuji-OSCAR 12 with Modes JA (analogue) and JD (digital), where "J" stood for "Japan." FCC even included the definitions of Modes A and B in the written tests of that era.
This "ancient history" has probably served its purpose. Art is right: we'd do better to stick with the numbers.
73 Ray W2RS
I agree with Art and Ray. We should just use the frequency or frequency range when referring to a radio band. I have found myself at times having to check which of the several standards (isn't it nice to have so many?) an author used when referring to radio bands. It is much easier and clearer to just refer a band by the frequency.
73, Edson PY2SDR
--- - We humans have the capability to do amazing things if we work together. - Nós seres humanos temos a capacidade de fazer coisas incríveis se trabalharmos juntos.
On Tue, Jul 5, 2016 at 1:30 PM, RSoifer1--- via AMSAT-BB <amsat-bb@amsat.org
wrote:
We have been using the term "Mode K" to describe 21 MHz uplink/29 MHz downlink because that is what AMSAT called it when it first came into use in 1987. Similarly, the terms "Mode A" and "Mode B" came into use in 1974 because that is what the engineers who designed AMSAT-OSCAR 7 called them. AO-7 actually has four modes: Mode C is a low-power version of Mode B, and Mode D is "transponder off." Then came Fuji-OSCAR 12 with Modes JA (analogue) and JD (digital), where "J" stood for "Japan." FCC even included the definitions of Modes A and B in the written tests of that era.
This "ancient history" has probably served its purpose. Art is right: we'd do better to stick with the numbers.
73 Ray W2RS
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Agreed but we will have to change the behaviour of the professionals who still use the terminology in general.
That action may take a generation or two I guess!
73
Graham
-----Original Message----- From: Edson W. R. Pereira Sent: Tuesday, July 05, 2016 7:24 PM To: amsat-bb@amsat.org Subject: Re: [amsat-bb] Band designators, Modes
I agree with Art and Ray. We should just use the frequency or frequency range when referring to a radio band. I have found myself at times having to check which of the several standards (isn't it nice to have so many?) an author used when referring to radio bands. It is much easier and clearer to just refer a band by the frequency.
73, Edson PY2SDR
--- - We humans have the capability to do amazing things if we work together. - Nós seres humanos temos a capacidade de fazer coisas incríveis se trabalharmos juntos.
On Tue, Jul 5, 2016 at 1:30 PM, RSoifer1--- via AMSAT-BB <amsat-bb@amsat.org
wrote:
We have been using the term "Mode K" to describe 21 MHz uplink/29 MHz downlink because that is what AMSAT called it when it first came into use in 1987. Similarly, the terms "Mode A" and "Mode B" came into use in 1974 because that is what the engineers who designed AMSAT-OSCAR 7 called them. AO-7 actually has four modes: Mode C is a low-power version of Mode B, and Mode D is "transponder off." Then came Fuji-OSCAR 12 with Modes JA (analogue) and JD (digital), where "J" stood for "Japan." FCC even included the definitions of Modes A and B in the written tests of that era.
This "ancient history" has probably served its purpose. Art is right: we'd do better to stick with the numbers.
73 Ray W2RS
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
We’ll just have to set a better example. Probably will take a generation to shed old habits. :-)
73…..
On 5-Jul-2016, at 04:19 PM, Graham Shirville g.shirville@btinternet.com wrote:
Agreed but we will have to change the behaviour of the professionals who still use the terminology in general.
That action may take a generation or two I guess!
73
Graham
-----Original Message----- From: Edson W. R. Pereira Sent: Tuesday, July 05, 2016 7:24 PM To: amsat-bb@amsat.org Subject: Re: [amsat-bb] Band designators, Modes
I agree with Art and Ray. We should just use the frequency or frequency range when referring to a radio band. I have found myself at times having to check which of the several standards (isn't it nice to have so many?) an author used when referring to radio bands. It is much easier and clearer to just refer a band by the frequency.
73, Edson PY2SDR
- We humans have the capability to do amazing things if we work together.
- Nós seres humanos temos a capacidade de fazer coisas incríveis se
trabalharmos juntos.
On Tue, Jul 5, 2016 at 1:30 PM, RSoifer1--- via AMSAT-BB <amsat-bb@amsat.org
wrote:
We have been using the term "Mode K" to describe 21 MHz uplink/29 MHz downlink because that is what AMSAT called it when it first came into use in 1987. Similarly, the terms "Mode A" and "Mode B" came into use in 1974 because that is what the engineers who designed AMSAT-OSCAR 7 called them. AO-7 actually has four modes: Mode C is a low-power version of Mode B, and Mode D is "transponder off." Then came Fuji-OSCAR 12 with Modes JA (analogue) and JD (digital), where "J" stood for "Japan." FCC even included the definitions of Modes A and B in the written tests of that era.
This "ancient history" has probably served its purpose. Art is right: we'd do better to stick with the numbers.
73 Ray W2RS
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Everyone, in some small sacred sanctuary of the self, is nuts. -Leo Rosten, author (1908-1997)
participants (4)
-
Arthur Feller -
Edson W. R. Pereira -
Graham Shirville -
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