MiniTiouner hardware Version 2 - Revision history

G0MJW: /* Building the Version 2 MiniTiouner PCB */

2025-08-31T09:37:13Z

Building the Version 2 MiniTiouner PCB

G8GTZ: /* Dual channel output for the Minitiouner hardware */

2023-04-21T08:23:51Z

Dual channel output for the Minitiouner hardware

G8GTZ: /* Hardware */

2023-04-20T20:50:22Z

Hardware

G8GTZ: /* Hardware */

2023-04-20T20:49:23Z

Hardware

G8GTZ: /* Hardware */

2023-04-20T20:49:06Z

Hardware

G8GTZ: /* Hardware */

2023-04-20T20:48:03Z

Hardware

G8GTZ: /* Dual channel output for the Minitiouner hardware */

2023-04-20T20:27:26Z

Dual channel output for the Minitiouner hardware

G8GTZ: /* Serit LNB DC supply problems */

2023-04-20T20:24:28Z

Serit LNB DC supply problems

G8GTZ: /* Dual channel output for the Minitiouner hardware */

2023-04-20T20:23:59Z

Dual channel output for the Minitiouner hardware

G8GTZ: /* Serit LNB DC supply problems */

2023-04-20T20:23:26Z

Serit LNB DC supply problems

@@ Line 20: / Line 20: @@
 The PCB has been developed to fit snuggly inside a Hammond 1455 series 103x120x53mm enclosure and uses standard leaded components so no specialist techniques needed.
-Mike, G0MJW, has written an excellent guide on building and testing the board - download them here [[:Media:Notes on building the BATC v2 Minitiouner.pdf|Notes on building the BATC v2 Minitiouner]]. This pdf includes a Panel layout for the Hammond Box.
+Mike, G0MJW, has written an excellent guide on building and testing the board - download them here [[:Media:Notes on building the BATC v2 Minitiouner.pdf|Notes on building the BATC v2 Minitiouner]]. This pdf includes a Panel layout for the Hammond Box. The height of the USB connector depends on the header used, but if the one in the BOM is selected, the bottom of the connector will be ~19mm from the bottom of the panel.
 [[File:Serit2.jpg|400px]]

@@ Line 90: / Line 90: @@
 ===Hardware===
-It has always been known that the Serit NIM used in MiniTiounerhas a dual tuner capability and is capable of tuning to and outputting two separate channels.  When the version 2 MiniTiouner PCB was designed by Mike G0MJW and Jean-Pierre F6DZP they included a 2nd transport stream output on a separate socket next door to the tuner module.
+It has always been known that the Serit 4473 NIM used in MiniTiouner has a dual tuner capability and is capable of tuning to and outputting two separate channels.  When the version 2 MiniTiouner PCB was designed by Mike G0MJW and Jean-Pierre F6DZP they included a 2nd transport stream output on a separate socket next door to the tuner module.
 [[File:M21.JPG|400px]]

@@ Line 106: / Line 106: @@
 [[File:M27.JPG|400px]][[File:M28.JPG|400px]]
-Schematic
+===Schematic===
 [[File:M22.JPG|600px]]

@@ Line 108: / Line 108: @@
 Schematic
-[[File:M22.JPG|400px]]
+[[File:M22.JPG|600px]]
 Two new holes need to be drilled in the front panel, one for USB and one for support. A simple bracket needs to be fabricated to manage the USB plugging forces.

← Older revision		Revision as of 20:49, 20 April 2023
Line 106:		Line 106:
	[[File:M27.JPG\|400px]][[File:M28.JPG\|400px]]		[[File:M27.JPG\|400px]][[File:M28.JPG\|400px]]

		+	Schematic
		+
		+	[[File:M22.JPG\|400px]]

	Two new holes need to be drilled in the front panel, one for USB and one for support. A simple bracket needs to be fabricated to manage the USB plugging forces.		Two new holes need to be drilled in the front panel, one for USB and one for support. A simple bracket needs to be fabricated to manage the USB plugging forces.

@@ Line 92: / Line 92: @@
 It has always been known that the Serit NIM used in MiniTiounerhas a dual tuner capability and is capable of tuning to and outputting two separate channels.  When the version 2 MiniTiouner PCB was designed by Mike G0MJW and Jean-Pierre F6DZP they included a 2nd transport stream output on a separate socket next door to the tuner module.
-Because when the unit is used for terrestrial contacts there is no need for a 2nd channel,  the USB interface board needed to use the 2nd channel was never developed.  However, with the launch of Oscar100, there are often 2 or more separate signals on the wideband transponder.
+[[File:M21.JPG|400px]]
-As a result of this potential application, Mike G0MJW has now developed a small daughter board that hosts a 2nd USB module and 74HC-10 chip and plugs into the main MiniTiouner board providing a second USB output whilst still fitting inside the standard Hammond case.
+Because when the unit is used for terrestrial contacts there is no need for a 2nd channel,  the USB interface board needed to use the 2nd channel was never developed.  However, with the launch of Oscar100, there are often 2 or more separate signals on the wideband transponder.  As a result of this potential application, Mike G0MJW has now developed a small daughter board that hosts a 2nd USB module and 74HC-10 chip and plugs into the main MiniTiouner board providing a second USB output whilst still fitting inside the standard Hammond case.
-The new daughter board sits on top of a standard header fitted to the empty socket next door to the Serit NIM. Two new holes need to be drilled in the front panel, one for USB and one for support. A simple bracket needs to be fabricated to manage the USB plugging forces.
+[[File:M23.JPG|400px]]
 ===Software===
 Tom ZS6RTG is currently developing a dual-channel version of opentuner.

← Older revision		Revision as of 20:27, 20 April 2023
Line 88:		Line 88:

	==Dual channel output for the Minitiouner hardware==		==Dual channel output for the Minitiouner hardware==
		+	===Hardware===
		+
		+	It has always been known that the Serit NIM used in MiniTiounerhas a dual tuner capability and is capable of tuning to and outputting two separate channels. When the version 2 MiniTiouner PCB was designed by Mike G0MJW and Jean-Pierre F6DZP they included a 2nd transport stream output on a separate socket next door to the tuner module.
		+
		+	Because when the unit is used for terrestrial contacts there is no need for a 2nd channel, the USB interface board needed to use the 2nd channel was never developed. However, with the launch of Oscar100, there are often 2 or more separate signals on the wideband transponder.
		+
		+	As a result of this potential application, Mike G0MJW has now developed a small daughter board that hosts a 2nd USB module and 74HC-10 chip and plugs into the main MiniTiouner board providing a second USB output whilst still fitting inside the standard Hammond case.
		+
		+	The new daughter board sits on top of a standard header fitted to the empty socket next door to the Serit NIM. Two new holes need to be drilled in the front panel, one for USB and one for support. A simple bracket needs to be fabricated to manage the USB plugging forces.
		+
		+	===Software===
		+
		+	Tom ZS6RTG is currently developing a dual-channel version of opentuner.

← Older revision		Revision as of 20:24, 20 April 2023
Line 86:		Line 86:

	[[Serit LNB DC supply]]		[[Serit LNB DC supply]]
		+
		+	==Dual channel output for the Minitiouner hardware==

← Older revision		Revision as of 20:23, 20 April 2023
Line 86:		Line 86:

	[[Serit LNB DC supply]]		[[Serit LNB DC supply]]
−
−	~~===Dual channel output for the Minitiouner hardware===~~

@@ Line 81: / Line 81: @@
 ==Serit LNB DC supply problems ==
-A number of people on the BATC forum have reported their Serit tuners are no longer outputting the LNB voltage from one of the F sockets. The cause is inevitably an open circuit inductor (L101 or L102) after the output has been accidently short circuited.
+A number of people on the BATC forum have reported their Serit tuners are no longer outputting the LNB voltage from one of the F sockets. The cause is inevitably an open circuit inductor (L101 or L102) after the output has been accidentally short-circuited.
 This wiki page has more details of how to repair a broken tuner and details of an add on PCB with a DC current limited supply.
 [[Serit LNB DC supply]]