Youll need a real antenna or a Dummy Load, a clip-lead or a piece of bare wire, and possibly an Ohmmeter. In riding, our group uses 145. Not any ground wires or shielded. By the way, this just happens to be the pin numbering for all Cobra radios. Cover with a large hunk of shrink and zip tie the ends tight as you can. Step 1: Identify the Mike or audio line. Different manufacturers may wire their microphones differently.
Lastly, if you need any help choosing a motorcycle or would like advice on maintenance for your motorcycle, be sure to check out this on! Ham Radio operators review new sites every day since 1998, for potential inclusion in the Directory, and to evaluate the best place to list them. You can also confirm this in Step 4 below. Youve reduced those five wires down to the four you need for electronic switching, or the three you need for relay switching. Check for breaks or damage to the plug and cord. In addition, a 12 V cigarette lighter power cord comes in the box. How To Cure The Squeal Refer to Figure 3.
The reader is expected to secure any other information needed from Service Manuals or other sources. All Turner mobile mikes work this way. For example, Cobra 4 Pin radios are wired 1 Shield 2 Audio 3 Transmit 4 Receive while Midland 4 Pin radios are wired 1 Audio 2 Shield 3 Receive 4 Transmit. Touch the other Ohmmeter test probe to all the mike socket pins. In other words, this is the Ground. In many cases, installation of a resistor of about 4. Or probe from the inside of the socket if you can reach the connections on it.
A quick Ohmmeter check after you find the mike line will reveal that you get a complete circuit continuity between the two remaining colored wires, rather than one color and the shield. The cure is cheap and simple. I've hit repeaters thirty miles away from home while still in the house with only the rubber duck! Lets say the mike has the following wires in the cord: 1. Values of about 470µH-1000µH work well and wont affect the audio quality. See the previous discussion to determine this. Manufacturers use the cheapest parts they can find. This works 99% of the time.
Following this section will be some good choices for both types. When the plug is not in, the shield on 3 is mated with pin 2 which feeds it back to the door switch. Following are some typical examples. The antenna even comes in black or white. If filtering the mike doesn't fix the problem, also check your antenna by substituting a Dummy Load. Stuff that in your jacket and you're off. · connect the audio line, ideally only when keyed.
Step 3: Strip back that common color and twist it together with the shield, making this a single wire. The obvious way is to look at the main chassis for a relay. Immediately draw a sketch of the socket, using its notch as a reference point. You may have to experiment to find the proper value resistor. An advantage of the battery-powered units is that there is really no installation, and the unit is easily removable for convenience or security. Red and black from mic. There are some radio brands that have the same general wiring such as Cobra and Uniden but that is not always the case.
Solder and tape all your connections. It's plenty strong and is not metal nor brittle. To dismount - only one wire to unplug. Start touching the other end of the wire or clip-lead to the remaining pins briefly and watch what happens. After finding the audio line, cut it at a convenient spot and insert a 4700 W 4.
The typical power mike will have three, four, or five colored wires and a shield braid. You should not need to worry about these connections because they are not interrupted in the headset line maintaining the insulation from stem to stern. A meter on the mike line will jump when you key it. This problem shows up as a loud buzz, squeal, or the receiver going dead when you plug the mike in. Many times when keying it youll see the Ohmmeter kick up, then slowly settle down to a set value as the capacitors in the mike amplifier charge up. Don't really have the time or money to take it to a shop is the reason for trying it myself. One color should show a short; i.
If need be, you can very gently spread the pins with a small flathead screwdriver. Some older relay switched rigs used a small shielded cable between the mike socket and main chassis, a dead giveaway that those are the Mike line and Ground. No muss, no fuss, this kit could get you on the air in almost no time at all. In any case, only four wires are actually needed. Zip tie securely and zip tie the double cords to each other for about 6 inches down. Another color should show a short 0 W , or continuity with the mike keyed, and open with the mike button released.