Receiving Oscar 100 DATV signals - Revision history

G8GTZ: /* Mark 2 MiniTiouner PCB */

2024-04-30T08:44:40Z

Mark 2 MiniTiouner PCB

G8GTZ: /* MiniTiouner Mk1 PCB */

2024-04-30T08:43:25Z

MiniTiouner Mk1 PCB

G8GTZ: /* Digital receivers for QO100 */

2024-04-30T08:42:09Z

Digital receivers for QO100

G8GTZ: /* MiniTiouner */

2024-04-30T08:40:08Z

MiniTiouner

G8GKQ: /* QO-100 DATV beacon - 10491.5 MHz, DVB-S2 1.5 MS FEC 4/5 */

2023-11-13T14:28:08Z

QO-100 DATV beacon - 10491.5 MHz, DVB-S2 1.5 MS FEC 4/5

G8GKQ: /* Typical receive results */

2023-11-13T14:24:03Z

Typical receive results

G8GKQ: /* QO-100 DATV beacon - 10491.5 MHz, DVB-S2 1.5 MS FEC 4/5 */

2022-09-25T16:00:38Z

QO-100 DATV beacon - 10491.5 MHz, DVB-S2 1.5 MS FEC 4/5

G8GKQ: /* Typical receive results */

2022-09-25T15:59:11Z

Typical receive results

G8GKQ: /* Typical receive results */

2021-09-21T19:29:25Z

Typical receive results

G8GKQ: /* Typical receive results */

2021-09-21T19:00:10Z

Typical receive results

@@ Line 60: / Line 60: @@
 [[File:Serit complete.jpg|300px]]
-This is the USB hardware which has been available for 7 years and will work well for HAMTV.
+This is the USB hardware which has been available for 7 years and is now replaced by the PicoTuner - see below.
   For full details of the USB tuner hardware, including parts list and construction details see this wiki page: [[MiniTiouner hardware Version 2]]

← Older revision		Revision as of 08:43, 30 April 2024
Line 75:		Line 75:

	For more details see this wiki page [[PicoTuner]]		For more details see this wiki page [[PicoTuner]]
−
−	~~====MiniTiouner Mk1 PCB====~~
−
−	~~[[File:IMAG0218.jpg\|300px]]~~
−
−	~~As mentioned above, the original BATC MiniTiouner Mk1 PCB (available from 2015 to 2017) with a Sharp or Eardatek tuner '''DOES NOT''' cover 2395MHz and will require a downconverter.~~
−
−	As well as covering the HAMTV frequency without a down converter, the Serit 4334 has much better RF performance than the original Sharp and Eardatek units and has been integrated into the OpenTuner, Ryde and Portsdown DATV receive systems.

	===Software for use with the USB receiver===		===Software for use with the USB receiver===

← Older revision		Revision as of 08:42, 30 April 2024
Line 45:		Line 45:

	However, you will NOT be able to use most (95%) of consumer STB's to receive the Reduced bandwidth (RB-TV) signals which are typically 333Ks on Oscar 100.		However, you will NOT be able to use most (95%) of consumer STB's to receive the Reduced bandwidth (RB-TV) signals which are typically 333Ks on Oscar 100.
−
−	~~==Digital receivers for QO100==~~
−
−	Most QO100 transmissions can be received using a DVB-S2 receiver capable of decoding 100k to 2 Msymbol / second transmissions. This means that a standard consumer Set Top Box (STB) can be used. A receiver, such as a typical consumer STB, that needs to scan the frequency is unlikely to lock to the signal in the time available during the pass. This solution is therefore not recommended.

	===Receivers designed for DATV===		===Receivers designed for DATV===

@@ Line 45: / Line 45: @@
   However, you will NOT be able to use most (95%) of consumer STB's to receive the Reduced bandwidth (RB-TV) signals which are typically 333Ks on Oscar 100.
 ===MiniTiouner===
-However, there is a USB tuner designed specifically for Amateur TV use which natively covers 143MHz to 2450Mhz and is suitable to receive Es’hail-2 and a number of amateur bands with no modifications or additional up-converter.
+The MiniTiouner software is still available however the author F6DZP is no longer involved in the amateur radio community so is not providing support or enhancements and you can no longer register on the Viva DATV forum to download the software.
-The other reason why MiniTioune is the preferred solution to receive the DATV transponder is that most amateur TV transmissions are using Reduced Bandwidth DATV (RB-TV) with a bandwidth below 1 MHz - to date 90% of the DATV transmissions on Oscar 100 have used RB-TV.  A standard consumer STB will not receive these RB-TV signals but MiniTiouner has been designed to receive RB-TV signals with bandwidths down to less than 100 KHz bandwidth.
+* SDRangel [https://www.sdrangel.org/ https://www.sdrangel.org/]
-MiniTiouner hardware is available from the BATC and other sources and are used with the MiniTioune software developed by F6DZP to receive and decode the signals.  See [[MiniTioune|https://wiki.batc.org.uk/MiniTioune]] for more details.
+Do note that any software-based receiver is likely to be less sensitive (1dB+) than a hardware receiver and will require a more powerful computer to run. For this reason the BATC recommends to use a hardware receiver.
 ===SDRs===

@@ Line 96: / Line 96: @@
 ===QO-100 DATV beacon - 10491.5 MHz, DVB-S2 1.5 MS FEC 4/5 ===
-Since the beacon was reduced in bandwidth to 1.5 MS, the following (empty transponder) results are typical with a POTY feed using a "rocket" LNB lens:
+The following (empty transponder) results are typical with a POTY feed using a "rocket" LNB lens:
 {| class="wikitable"

← Older revision		Revision as of 14:24, 13 November 2023
Line 118:		Line 118:

	Using an optimised LNB and horn, results could be up to 1 dB better as the POTY with lens is not perfect.		Using an optimised LNB and horn, results could be up to 1 dB better as the POTY with lens is not perfect.
−
−
−	~~When the beacon was 2 MS, the maximum MER possible was is 11.7 dB, limited by uplink C/N.~~
−
−	~~Readings from the old beacon: measured using MiniTioune V0.8s and with DVB-S2 (not auto) selected.~~
−
−	~~{\| class="wikitable"~~
−	\|-
−	~~! Dish size !! Received MER~~
−	\|-
−	~~\| 1.8m \|\| 10dB~~
−	\|-
−	~~\| 1.2m \|\| 8dB~~
−	\|-
−	~~\| 1m \|\| 6dB~~
−	\|-
−	~~\| 80cm \|\| 5dB~~
−	\|}

← Older revision		Revision as of 16:00, 25 September 2022
Line 116:		Line 116:
	\| 60cm \|\| 6 dB		\| 60cm \|\| 6 dB
	\|}		\|}
		+
		+	Using an optimised LNB and horn, results could be up to 1 dB better as the POTY with lens is not perfect.

@@ Line 96: / Line 96: @@
 ===QO-100 DATV beacon - 10491.5 MHz, DVB-S2 1.5 MS FEC 4/5 ===
-Since the beacon was reduced in bandwidth to 1.5 MS, the following results are typical:
+Since the beacon was reduced in bandwidth to 1.5 MS, the following (empty transponder) results are typical with a POTY feed using a "rocket" LNB lens:
 {| class="wikitable"
@@ Line 108: / Line 108: @@
 | 1.2m || 10 dB
 |-
-| 1m || ?? dB
+| 1m || 9 dB
 |-
-| 80cm || ?? dB
+| 80cm || 8 dB
 |-
 | 60cm || 6 dB

@@ Line 102: / Line 102: @@
 ! Dish size !! Received MER
 |-
-| 2.4m || ??dB
+| 2.4m || 12 dB
 |-
 | 1.8m || 11.5 dB