The Antec P183 Solution - Revision history

OZ1HFT: catchg

2010-01-25T19:13:48Z

catchg

OZ1HFT: +cat

2010-01-25T18:08:29Z

+cat

W9KFB: /* Open Issues not resolved */ FM deviation issue is resolved

2009-10-16T23:12:42Z

‎Open Issues not resolved: FM deviation issue is resolved

W9KFB: added open issues

2009-10-04T10:10:26Z

added open issues

W9KFB: /* Analog Mike Preamp Circuit Diagram */ added credit to AD9DP

2009-10-04T02:43:49Z

‎Analog Mike Preamp Circuit Diagram: added credit to AD9DP

W9KFB: added Mike preamp schematic

2009-10-04T00:35:05Z

added Mike preamp schematic

W9KFB: moved up photos

2009-10-04T00:21:27Z

moved up photos

W9KFB: added lessons learned section.

2009-10-03T23:56:39Z

added lessons learned section.

W9KFB: added HPSDR components to list

2009-09-29T09:34:20Z

added HPSDR components to list

W9KFB: /* Complete Bill of Material (BOM) */ complete the list

2009-09-29T09:22:05Z

‎Complete Bill of Material (BOM): complete the list

← Older revision		Revision as of 19:13, 25 January 2010
Line 132:		Line 132:
	#Mike meter reporting 10LogV instead of 20LogV in TX mode.		#Mike meter reporting 10LogV instead of 20LogV in TX mode.

−	[[Category:Hardware ~~suggested~~]]	+	[[Category:Hardware]]

← Older revision		Revision as of 18:08, 25 January 2010
Line 131:		Line 131:

	#Mike meter reporting 10LogV instead of 20LogV in TX mode.		#Mike meter reporting 10LogV instead of 20LogV in TX mode.
		+
		+	[[Category:Hardware suggested]]

← Older revision		Revision as of 23:12, 16 October 2009
Line 130:		Line 130:
	=== Open Issues not resolved ===		=== Open Issues not resolved ===

−	~~#FM communications (low audio levels received from another HPSDR), 2.5KHz Vs. 5KHz deviation on TX, with 5KHz deviation expected in RX.~~
	#Mike meter reporting 10LogV instead of 20LogV in TX mode.		#Mike meter reporting 10LogV instead of 20LogV in TX mode.

← Older revision		Revision as of 10:10, 4 October 2009
Line 127:		Line 127:
	===Analog Mike Preamp Circuit Diagram===		===Analog Mike Preamp Circuit Diagram===
	[[Image:Mic Preamp Schematic Rev2.jpg\|thumb\|550px\| Analog Mike Preamp Circuit Diagram by David Poole, AD9DP]]		[[Image:Mic Preamp Schematic Rev2.jpg\|thumb\|550px\| Analog Mike Preamp Circuit Diagram by David Poole, AD9DP]]
		+
		+	=== Open Issues not resolved ===
		+
		+	#FM communications (low audio levels received from another HPSDR), 2.5KHz Vs. 5KHz deviation on TX, with 5KHz deviation expected in RX.
		+	#Mike meter reporting 10LogV instead of 20LogV in TX mode.

← Older revision		Revision as of 02:43, 4 October 2009
Line 126:		Line 126:

	===Analog Mike Preamp Circuit Diagram===		===Analog Mike Preamp Circuit Diagram===
−	[[Image:Mic Preamp Schematic Rev2.jpg\|thumb\|550px\| Analog Mike Preamp Circuit Diagram]]	+	[[Image:Mic Preamp Schematic Rev2.jpg\|thumb\|550px\| Analog Mike Preamp Circuit Diagram by David Poole, AD9DP]]

← Older revision		Revision as of 00:35, 4 October 2009
Line 123:		Line 123:

	2. We tried to use the analog mike input on the Penelope, but found that the electrical noise level was to high. We then reduced the software gain by 20 dB by changing the "into_ozy11.bat" file to disable the 20 dB mike boost. Next we built an external 20 dB mike amp to get the mike level correct. Details on building this interface circuit follows in the next section.		2. We tried to use the analog mike input on the Penelope, but found that the electrical noise level was to high. We then reduced the software gain by 20 dB by changing the "into_ozy11.bat" file to disable the 20 dB mike boost. Next we built an external 20 dB mike amp to get the mike level correct. Details on building this interface circuit follows in the next section.
		+
		+
		+	===Analog Mike Preamp Circuit Diagram===
		+	[[Image:Mic Preamp Schematic Rev2.jpg\|thumb\|550px\| Analog Mike Preamp Circuit Diagram]]

@@ Line 1: / Line 1: @@
 [[Image:P138Solution.jpg|thumb|300px| Block Diagram of the P138 Solution]]
+[[Image:P138ready.jpg|thumb|300px| Rear view of Antec P138 case prepared for installation of HPSDR components]]
 An example of '''The Antec P183 Solution''' using the [[MERCURY|Mercury]], [[PENELOPE|Penelope]], and [[OZY|Ozy]] boards and other available hardware and software.
@@ Line 10: / Line 17: @@
 ===Enclosure===
-[[Image:P138ready.jpg|thumb|300px| Rear view of Antec P138 case prepared for installation of HPSDR components]]
 Antec's P183 case brings you top performance and unique style, with its three-layer, sound-deadening panels. Inside, a separate lower chamber houses your power supply (purchased separately), isolating its heat and reducing system noise. The upper chamber comes standard with rear and top 120 mm TriCool fans, with spaces for an optional front 120 mm fan, and a middle 120 mm fan. These two optional fans were mounted to cool the RF power amplifier components.
@@ Line 19: / Line 26: @@
 ===Power Supply===
-[[Image:TruePower Quattro.jpg|thumb|300px| 850 Watt TruePower Quattro power supply used in this project]]
 The TruePower Quattro 850 Watt Power Supply Unit includes four +12V outputs at 25 Amperes each, that deliver safe and reliable power to the transceiver componets. The protective circuitry is industrial-grade and includes OCP (Over Current Protection), OVP (Over Voltage Protection), SCP (Short Circuit Protection) and UVP (Under Voltage Protection).
@@ Line 25: / Line 32: @@
 === Motherboard, CPU and OS===
 Any motherboard will fit in this large enclosure, but an Intel DG35EC was just removed from another project with an Intel Core2 Quad and 4 GB of DDR2 memory. As cost was not an object in this project and performance was the object, the motherboard and CPU selection was made.
@@ Line 110: / Line 116: @@
 ===Lessons Learned===

← Older revision		Revision as of 23:56, 3 October 2009
Line 113:		Line 113:

	[[Image:BigIronBack.jpg\|thumb\|300px\| Rear view of the finished "Big Iron]]		[[Image:BigIronBack.jpg\|thumb\|300px\| Rear view of the finished "Big Iron]]
−


Line 121:		Line 120:

	[[Image:180wattAmp.jpg\|thumb\|300px\| The 180 Watt RF Amplifier and the 850 watt PC power supply]]		[[Image:180wattAmp.jpg\|thumb\|300px\| The 180 Watt RF Amplifier and the 850 watt PC power supply]]
		+
		+	===Lessons Learned===
		+
		+	1. Its all about grounding. Avoid ground loops on sensitive and long mike inputs to Penelope. Use a large gauge ground wire from each of the amplifier's to to the back of the rig and terminate each under one of the computer power supply's mounting screws.
		+
		+	2. We tried to use the analog mike input on the Penelope, but found that the electrical noise level was to high. We then reduced the software gain by 20 dB by changing the "into_ozy11.bat" file to disable the 20 dB mike boost. Next we built an external 20 dB mike amp to get the mike level correct. Details on building this interface circuit follows in the next section.

@@ Line 32: / Line 32: @@
 System: Microsoft Windows XP Professional, Version 2002, Service Pack 3
 Computer: Intel® Core™2 Quad CPU, Q8200 @ 2.33GHz, 2.32GHz, 3.24GB of RAM, Physical Address Extension.
 === Complete Bill of Material (BOM) ===

@@ Line 35: / Line 35: @@
 === Complete Bill of Material (BOM) ===
-Prices are from [http://www.Newegg.com NewEgg] Web site unless otherwise indicated by *.
+Prices are from [http://www.Newegg.com NewEgg] Web site unless indicated by *.
 {| class="wikitable" cellpadding="0"
 |-
@@ Line 67: / Line 67: @@
 |HPSDR Components*
 |align="right"|936.33
 |-
 |Misc. Small parts (nuts, bolts, standoffs, carbide drill bit for drilling steel, audio and PTT jacks & cables, BNC antenna connector*
 |align="right"|30.00
 |-
-|TOHTSU Coaxial Relay CX 230*
+|Communications Concepts AN762 140 Watt HF Amplifier in a Hammond 7.3X4.7X2.0 Dicast Aluminum Alloy Box with connectors*
-|align="right"|95.00
+|align="right"|144.00
 |-
 |TOTAL
-|align="right"|TBD
+|align="right"|2228.16
 |-
 |}