Soundcard Isolation Project - VA3CR

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4.3.4 Audio Cables - Source Mouser Electronics (M) or Radio Shack (RS) Qty Flag Item Cat Pg Part Number Ea. Ext. 3 Cable, 6’, Shielded stereo audio 1/8” mini 122 172-3504 4.39 13.17 M or 3 Cable, 6’, Shielded stereo audio 1/8” mini 185 42-2420 2.69 8.07 RS Note: qty above assumes that the connection to the rig is via the microphone and a line out or speaker out via a 1/8” connector. If the rig is interfaced using an accessory connector for both transmit and receive audio, change above quantity to 2. 4.3.5 Rig Control Cables - Source Mouser(M) or Radio Shack (RS) Qty Flag Item Cat Pg Part Number Ea. Ext. 1 12 inch, 4 twisted pair (8 conductor) CAT 5 type cable with RJ45 connector on one end, the other end connects to the rig microphone or auxiliary matching connector. Here are some ways to procure this cable: 1 Category 5 patch cable 3 foot 140 571-2191973 2.69 2.69 M cut the patch cable at the required length or Go to your local radio shack store and have them make up a cable with CAT 5 cable and the RJ45 connector. They will usually do it for much less than the above price. 4.3.6 Rig Microphone or Accessory Connector Qty Flag Item Cat Pg Part Number Ea. Ext. The type of connector used for the microphone varies from transceiver to transceiver. Below are some sources for connectors. You will need (1). Some microphone connectors Connector, 8 pin, microphone 191 274-025 2.49 2.49 RS Connector, 4 pin, microphone 191 274-001 1.99 1.99 RS Some auxiliary type connectors Connector, plug, 5 pin, DIN 273 274-003 1.99 1.99 RS Connector, plug, 8 pin, DIN 273 274-026 1.99 1.99 RS Connector, plug, 5 pin, DIN 133 171-0275 0.65 0.65 M Connector, plug, 6 pin, DIN 133 171-0276 0.66 0.66 M Connector, plug, 8 pin, DIN 133 171-0278 0.74 0.74 M Connector, plug, 6 pin, Mini-DIN 133 171-2606 1.06 1.06 M Connector, plug, 8 pin, Mini-DIN 133 171-2608 1.18 1.18 M Connector, plug, 9 pin, Mini-DIN 133 171-2609 1.57 1.57 M 10
5 Assembly The assembly of the interface is done in four sections; PC board, cables, top panel, and enclosure.. They should be done in the order above, since the finished board is used for checking the cutout of enclosure hole patterns, and for alignment of installing the panel overlays. 5.1 Printed Circuit Board (PCB) Assembly: The PCB can be assembled in one of two different configurations, -1 or -2 . See the discussion in the theory of operation section to determine which configuration is right for your rig. The differences are noted in the instructions below. 5.1.1 Polarized Components - There are some components which are polarized or keyed, so attention must be paid to the orientation of the components that go on the board. These polarized/keyed components will be marked with ** in the component stuffing chart, figure 5.3. 5.1.2 Components Requiring Trim Before Insertion There are three component types which must be trimmed before insertion. These are the LED, the Switch and the Potentiometers. The LED and Switch are mounted with the ends of the leads just even with the bottom of the board. When cut to the required dimension, this will align the parts with the bottom of the cover plate when the chassis is assembled. Refer to drawing 5.1, Component Cut Dimensions, for the dimension of lead cuts. The bottom nut on the switch is also adjusted to be positioned at the bottom of the cover plate. The potentiometer shafts need to be cut so that the knobs will be properly positioned above the cover plate when assembled. This dimension is also found on drawing 5.1. 0.8" LED Cut Line Cut Line Note: Inner nut placed 6 threads back Note: Specified switch does not need to be trimmed, this dimension is provided in case another switch is substituted 1.0" Toggle Switch 1.35" Potentiometer +12V Rear view of power connector PGND +12V DC Power Connector 2.55 x 5.55 mm 4" Pigtail leads #22 gauge insulated wire PGND Power Connector Cable Configuration -1 only Scale 1:1 Figure 5.1 Component Cut Dimensions 11
Page 1 and 2: Design and Construction Manual for
Page 3 and 4: 1 Introduction 1.1 Scope - This man
Page 5 and 6: 2 What You Will Need to Build the I
Page 7 and 8: oth the input and output audio path
Page 9 and 10: 3.2.3.3 PTT Configuration -2 Withou
Page 11: 4.3 Parts List - The parts list is
Page 15 and 16: Diodes ** D1 D2 1N4148 The cathodes
Page 17 and 18: 5.2.2 SSB Rig Control Cables - The
Page 19 and 20: 5.3 Cover Plate 5.3.1 Drill Templat
Page 21 and 22: made in the overlay paper on the fo
Page 23 and 24: 6 Software Sources - there are seve
Page 25 and 26: 7 System Setup and Test This sectio
Page 27 and 28: 7.4 Transmit Settings - 7.4.1 PC Tx
Page 29 and 30: compression system, if you have one
Page 31 and 32: 7.5 Common Problems and Their Cures

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