MX800 - Revision history

Bryan: /* Wiring up the audio interface */

2020-02-29T17:23:53Z

Wiring up the audio interface

Bryan at 22:32, 16 September 2019

2019-09-16T22:32:12Z

Bryan: /* General Info */

2017-07-04T16:24:41Z

General Info

Bryan: /* TX Line Input Level and Nominal Deviation Alignment */

2017-07-02T23:03:39Z

TX Line Input Level and Nominal Deviation Alignment

Bryan: /* Peak Deviation and Modulation Adjustment */

2017-07-02T23:02:07Z

Peak Deviation and Modulation Adjustment

Bryan: /* General Info */

2017-07-02T22:59:42Z

General Info

Bryan: /* General Info */

2017-07-02T22:57:52Z

General Info

Bryan at 22:55, 2 July 2017

2017-07-02T22:55:30Z

Bryan: /* General Info */

2017-07-02T22:54:46Z

General Info

Bryan: /* General Info */

2017-07-02T22:48:57Z

General Info

@@ Line 580: / Line 580: @@
 ! style="text-align: center;" | Color
 |-
-| 3
+| 5
 | SKH
 | PTT
@@ Line 615: / Line 615: @@
 SIP-1 pin 8
 | Fail-safe
-| Brown
+| White (brown)
 |}

@@ Line 19: / Line 19: @@
 [https://www.youtube.com/watch?v=ezWTiSiUwfw A Video of the Filter change process]
-Most will require a firmware upgrade and you may wish to put a CTCSS/DCS decoder in them if you need that.  My standard setup uses the [http://www.ebay.com/itm/201943785557 CTCSS/DCS board], [http://arsrepeaters.com/Audio_Delay_W462.php audio delay] and Raspberry Pi based allstar controller.  The advantage to the [http://www.masterscommunications.com/products/radio-adapter/ra35.html RA-35 interface] is if the RPi goes offline it will fail over to in cabinet local repeat with ID on the built-in controller.
+Most will require a firmware upgrade and you may wish to put a CTCSS/DCS decoder in them if you need that.  My standard setup uses the [http://www.ebay.com/itm/201943785557 CTCSS/DCS board], [http://arsrepeaters.com/Audio_Delay_W462.php audio delay] and Raspberry Pi based allstar® controller.  The advantage to the [http://www.masterscommunications.com/products/radio-adapter/ra35.html RA-35 interface] is if the RPi goes offline it will fail over to in cabinet local repeat with ID on the built-in controller.
 The jumpers, dip switches and nomenclature can be confusing.  I've resorted to tracing out the diagrams to understand the logic inputs and have presented the settings here as my standard configuration.  This may not work for everyone and there is certainly more telemetry and IO which can be done with the Mx800.
@@ Line 380: / Line 380: @@
 [[media:MX800-F 220 MHz Technical Brief.pdf|MX800-F 220 MHz Technical Brief]]
-= W9CR alignment procedure and setup with Allstar =
+= W9CR alignment procedure and setup with Allstar® =
 Presented below is the procedure and interfacing used to setup a Raspberry Pi 3 based interface with the Mx800.  Using a [http://www.masterscommunications.com/products/radio-adapter/ra35.html RA-35] adapter can fail back to in-cabinet repeat if asterisk should crash or some other control problem happens.  The addition of an [http://arsrepeaters.com/Audio_Delay_W462.php Audio Delay] board eliminates static crashes on received audio.

← Older revision		Revision as of 16:24, 4 July 2017
Line 6:		Line 6:

	As they were commercial stations, they are mostly narrow band FM only. Some are switchable, but most will require a filter change and re-calibration of the transmitter to work on 5 KHz deviation used by amateur radio. The manual has a procedure on how to convert the receiver if you have SMD rework equipment.		As they were commercial stations, they are mostly narrow band FM only. Some are switchable, but most will require a filter change and re-calibration of the transmitter to work on 5 KHz deviation used by amateur radio. The manual has a procedure on how to convert the receiver if you have SMD rework equipment.
		+	<blockquote><pre>
		+	For wide-band the following Murata filters are needed:
		+	FL5,FL6 - SFGCG455DX
		+
		+	Narrow-band:
		+	FL5,FL6 - CFUCG455GX
		+
		+	20 KHz spacing:
		+	FL5 - SFGCG455DX and FL6 - CFUCG455GX
		+	</pre></blockquote>

	[https://www.youtube.com/watch?v=ezWTiSiUwfw A Video of the Filter change process]		[https://www.youtube.com/watch?v=ezWTiSiUwfw A Video of the Filter change process]

@@ Line 440: / Line 440: @@
 There are three manual potentiometers associated with the TX deviation on the motherboard. These are set by injecting the correct audio levels and adjusting the potentiometers. The transmitter modulating audio is to be connected to either the WB/DC-FM input or the TX VF input as described in the procedures.
-JMP- Ensure the VF compressor is enabled.
+JMP-4 Ensure the VF compressor is enabled.
 JMP-8 set in position 1-2

@@ Line 423: / Line 423: @@
 # Key the transmitter and inject this into the WB input, '''Pin 12 on the DB-15, Blue Wire'''
 # Adjust the VCO Deviation digital potentiometer using MXTOOLS until the correct deviation is obtained
-# # Be sure the service monitor has enough attenuation on it for the deviation meter to work.
+## Be sure the service monitor has enough attenuation on it for the deviation meter to work.
 # Set the audio generator to +10 dBm at 400 Hz
 # Adjust the Reference Deviation digital potentiometer until the top of the waveform is flat.

@@ Line 5: / Line 5: @@
 The Mx800 is a great base station for amateur use.  The 220 MHz versions are now on the surplus market from Passport trunking systems that have gone bust in the mid 2000's.  Motorola OEM'd these systems as a standard part of their passport config.
 As they were commercial stations, they are mostly narrow band FM only.  Some are switchable, but most will require a filter change and re-calibration of the transmitter to work on 5 KHz deviation used by amateur radio.  The manual has a procedure on how to convert the receiver if you have SMD rework equipment.
-Most will require a firmware upgrade and you may wish to put a CTCSS/DCS decoder in them if you need that.  My standard setup uses the CTCSS board, audio delay and Raspberry Pi based allstar controller.  The advantage to the RA-35 interface is if the RPi goes offline it will fail over to in cabinet local repeat with ID on the built-in controller.
+[https://www.youtube.com/watch?v=ezWTiSiUwfw A Video of the Filter change process]
 The jumpers, dip switches and nomenclature can be confusing.  I've resorted to tracing out the diagrams to understand the logic inputs and have presented the settings here as my standard configuration.  This may not work for everyone and there is certainly more telemetry and IO which can be done with the Mx800.

← Older revision		Revision as of 22:55, 2 July 2017
Line 38:		Line 38:
	I've found the power out to drop off to less than 50 W (40W normal) at 225 MHz. Not sure what causes this, but I'll need to test further.		I've found the power out to drop off to less than 50 W (40W normal) at 225 MHz. Not sure what causes this, but I'll need to test further.

−	~~===~~

	== Dip Switches and Jumpers==		== Dip Switches and Jumpers==

@@ Line 17: / Line 17: @@
 MX800 Receiver.jpg|Mx800 Receiver Filters changed to wide band
 Mx800 Receiver Filter.jpg|Mx800 Receiver Filter
 Mx800 PA.jpg|Mx800 PA
 Mx800 PA closeup.jpg|Mx800 PA closeup
 Mx800 PA closeup2.jpg|Mx800 PA closeup
 Mx800 DCS module.jpg|OEM compatible DCS/CTCSS module
 Layout inside mx800.jpg|thumb|center|Layout of the boards inside the Mx800
 </gallery>

@@ Line 11: / Line 11: @@
 The jumpers, dip switches and nomenclature can be confusing.  I've resorted to tracing out the diagrams to understand the logic inputs and have presented the settings here as my standard configuration.  This may not work for everyone and there is certainly more telemetry and IO which can be done with the Mx800.
-<gallery>
+<gallery heights="200px" widths="200px" mode="packed-hover">
 Mx800 decoding DCS.jpg|Mx800 decoding DCS
 Mx800 decoding CTCSS.jpg|Mx800 decoding CTCSS
@@ Line 21: / Line 21: @@
 Mx800 PA closeup2.jpg|Mx800 PA closeup
 Mx800 DCS module.jpg|OEM compatible DCS/CTCSS module
-</galley>
+Layout inside mx800.jpg|thumb|center|Layout of the boards inside the Mx800
 == Known Issues ==