Es'hail-2 conference transmissions - Revision history

G8GKQ: /* Transmission standards */

2019-03-08T15:29:13Z

Transmission standards

G8GKQ at 15:21, 8 March 2019

2019-03-08T15:21:10Z

G8GTZ: /* Transmission standards */

2019-03-07T13:18:56Z

Transmission standards

G8GTZ at 18:03, 6 March 2019

2019-03-06T18:03:52Z

G8GTZ at 18:01, 6 March 2019

2019-03-06T18:01:39Z

G8GTZ at 16:02, 5 March 2019

2019-03-05T16:02:06Z

G8GTZ: /* Transmission standards */

2019-03-05T15:56:42Z

Transmission standards

G8GTZ: /* Transmission standards */

2019-03-05T15:56:22Z

Transmission standards

G8GTZ at 15:53, 5 March 2019

2019-03-05T15:53:42Z

G8GTZ: /* Transmission standards */

2019-03-05T15:52:32Z

Transmission standards

@@ Line 19: / Line 19: @@
 * Symbol Rate:  1.5MS (Higher SR needs more power/TX dish size and denies other users the bandwidth.  Lower SR reduces compatibility with commercial receivers and potentially reduces video quality.)  1.5MS also reduces any conflict with the 2MS beacon which can pull receiving station’s tuning off channel.
-* Frequency: Exact frequency to be used will be confirmed at the time of request but nominal frequency for conference transmissions is 10,494.5 MHz with a 0.2 roll off when the beacon transmission is on.
+* Frequency: The exact frequency to be used will be confirmed at the time of request, but the nominal frequency for conference transmissions when the beacon transmission is on is uplink 2405 MHz, downlink 10,494.5 MHz with a 0.2 roll off.  When the beacon is off (by arrangement) the beacon frequency should be used.
 * Encoding: H264 (H265 would give better picture quality, but increases encoding complexity and decreases receiver compatibility).

@@ Line 1: / Line 1: @@
 It has been agreed by AMSAT-DL that the wideband transponder can be used to uplink amateur radio related conferences and presentations.
-Any transmissions must be agreed with AMSAT-DL before the event and should last no longer than the actual condference or talk sessions - transmissions of rempty rooms and / or general activities are not permitted as they are taking up transponder bandwidth which could be used for normal DATV QSOs.
+Any transmissions must be agreed with AMSAT-DL before the event and should last no longer than the actual conference or talk sessions - transmissions of empty rooms and / or general activities are not permitted as they are taking up transponder bandwidth which could be used for normal DATV QSOs.
   A valid amateur radio callsign must be transmitted at all times (either in the SI or on the screen) and it is the user's responsibility to check and comply with their local license conditions.  For example the UK amateur radio license does NOT permit broadcast transmissions and all transmissions must either be a CQ call or a two way QSO.
-The event should be publisicised as much as possible on social media and the [https://forum.amsat-dl.org/ AMSAT-DL forum] and [https://forum.batc.org.uk/ BATC forum].
+The event should be publicised as much as possible on social media and the [https://forum.amsat-dl.org/ AMSAT-DL forum] and [https://forum.batc.org.uk/ BATC forum].
-A special event streaming channel can also be arranged on the [https://batc.org.uk/live/ BATC streamer] and this can be streamed from either directl;y from the event or a ground station using [[Streaming_directly_from_MiniTiouner|MiniTiouner and the ffmpeg script]].
+A special event streaming channel can also be arranged on the [https://batc.org.uk/live/ BATC streamer] and this can be streamed from either directly from the event or a ground station using [[Streaming_directly_from_MiniTiouner|MiniTiouner and the ffmpeg script]].
 ==Transmission standards==
-The aim should be to ensure anyone capable of receivng the beacon should be able to receive any conference transmissions.  To acheive this, the conference uplink should use the following transmission standards:
+The aim should be to ensure anyone capable of receiving the beacon should be able to receive any conference transmissions.  To achieve this, the conference uplink should use the following transmission standards:
 * Transmission mode: DVB-S2  (Increases the signal margin by 2 dB and is the recommended standard for QO-100)
@@ Line 17: / Line 17: @@
 * Modulation: QPSK  (gives the best signal margin)
-* Symbol Rate:  1.5MS (Higher SR needs more power/TX dish size and denies other users the bandwidth.  Lower SR reduces compatibility with commercial receivers and potentially reduces video quality.)  1.5Ms also reduces any conflict with the 2Ms beacon which can pull receiving station’s FEC off channel.
+* Symbol Rate:  1.5MS (Higher SR needs more power/TX dish size and denies other users the bandwidth.  Lower SR reduces compatibility with commercial receivers and potentially reduces video quality.)  1.5MS also reduces any conflict with the 2MS beacon which can pull receiving station’s tuning off channel.
-* Frequency: Exact frequency to be used will be confirmed at the time of request but nominal frequency for conference transmissions is 10,494.5 MHz with a .2 roll off when the beacon transmission is on.
+* Frequency: Exact frequency to be used will be confirmed at the time of request but nominal frequency for conference transmissions is 10,494.5 MHz with a 0.2 roll off when the beacon transmission is on.
-* Encoding: H264 (H265 would give better picture quality, but increases encoding complexity and decreases receiver compatibility.
+* Encoding: H264 (H265 would give better picture quality, but increases encoding complexity and decreases receiver compatibility).
 * Power Level:  The power level should be set to the same as the beacon (using the Spectrum Monitor here: https://eshail.batc.org.uk/wb/ ).  This means that anyone who can receive the beacon should be able to receive your transmission.

@@ Line 17: / Line 17: @@
 * Modulation: QPSK  (gives the best signal margin)
-* Symbol Rate:  1.5MS (higher SR needs more power/TX dish size and denies other users the bandwidth, lower reduces compatibility with commercial receivers and potentially reduces video quality)  1.5Ms also reduces any conflict with the 2Ms beacon which can pull station’s FEC off channel.
+* Symbol Rate:  1.5MS (Higher SR needs more power/TX dish size and denies other users the bandwidth.  Lower SR reduces compatibility with commercial receivers and potentially reduces video quality.)  1.5Ms also reduces any conflict with the 2Ms beacon which can pull receiving station’s FEC off channel.
 * Frequency: Exact frequency to be used will be confirmed at the time of request but nominal frequency for conference transmissions is 10,494.5 MHz with a .2 roll off when the beacon transmission is on.
-* Encoding: H264 (H265 would give better picture quality, but increases encoding complexity and decreases receiver compatibility.  MPEG-2 does not offer any advantages)
+* Encoding: H264 (H265 would give better picture quality, but increases encoding complexity and decreases receiver compatibility.
 * Power Level:  The power level should be set to the same as the beacon (using the Spectrum Monitor here: https://eshail.batc.org.uk/wb/ ).  This means that anyone who can receive the beacon should be able to receive your transmission.

@@ Line 5: / Line 5: @@
   A valid amateur radio callsign must be transmitted at all times (either in the SI or on the screen) and it is the user's responsibility to check and comply with their local license conditions.  For example the UK amateur radio license does NOT permit broadcast transmissions and all transmissions must either be a CQ call or a two way QSO.
-The event should be publisicised as much as possible on social media and the [https://forum.amsat-dl.org/ AMSAT-DL forum] and [https://forum.batc.org.uk/ BATC forum].  A special event streaming channel can also be arranged on the [https://batc.org.uk/live/ BATC streamer] and this can be streamed from either directl;y from the event or a ground station using [[Streaming_directly_from_MiniTiouner|MiniTiouner and the ffmpeg script]].
+The event should be publisicised as much as possible on social media and the [https://forum.amsat-dl.org/ AMSAT-DL forum] and [https://forum.batc.org.uk/ BATC forum].
 ==Transmission standards==

@@ Line 1: / Line 1: @@
-It has been agreed by Amsat-dl that the wideband transponder can be used to uplink amateur radio related conferences and presentations.
+It has been agreed by AMSAT-DL that the wideband transponder can be used to uplink amateur radio related conferences and presentations.
 Any transmissions must be agreed with AMSAT-DL before the event and should last no longer than the actual condference or talk sessions - transmissions of rempty rooms and / or general activities are not permitted as they are taking up transponder bandwidth which could be used for normal DATV QSOs.
   A valid amateur radio callsign must be transmitted at all times (either in the SI or on the screen) and it is the user's responsibility to check and comply with their local license conditions.  For example the UK amateur radio license does NOT permit broadcast transmissions and all transmissions must either be a CQ call or a two way QSO.
 ==Transmission standards==

@@ Line 7: / Line 7: @@
 ==Transmission standards==
-The conference uplink should use the following transmission standards:
+The aim should be to ensure anyone capable of receing the beacon should be able to receive any conference transmissions.  To acheive this, the conference uplink should use the following transmission standards:
 * Transmission mode: DVB-S2  (Increases the signal margin by 2 dB and is the recommended standard for QO-100)

← Older revision		Revision as of 15:53, 5 March 2019
Line 1:		Line 1:
−	It has been agreed that the wideband transponder can be used to uplink amateur radio related conferences and presentations.	+	It has been agreed by Amsat-dl that the wideband transponder can be used to uplink amateur radio related conferences and presentations.

	Any transmissions must be agreed with AMSAT-DL before the event and should last no longer than the actual condference or talk sessions - transmissions of rempty rooms and / or general activities are not permitted as they are taking up transponder bandwidth which could be used for normal DATV QSOs.		Any transmissions must be agreed with AMSAT-DL before the event and should last no longer than the actual condference or talk sessions - transmissions of rempty rooms and / or general activities are not permitted as they are taking up transponder bandwidth which could be used for normal DATV QSOs.