The Motherboard, or Mobo v4. 3. 4 BETA, is an addon board to plug onto the Softrock v6. 3 RxTx, to transform it into an all band (160-10m) HF transceiver electronically controlled via USB. Mobo v4. 3. 4 BETA is developed by a team of radio amateurs. The `core` members are Alex Lee (9V1AL), Mike Collins (KF4BQ), Loftur Jonasson (TF3LJ), Marc Olanie (F6I
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TU), and Art Allen (KY1K), with valuable contributions from many others. (footer P19) J1 and (footer P15) J2 - thus replacing the PAF modules. With the Mobo, there is no need to use any of the PAF modules. J2 will also provide the power supply to the Mobo. (footer P30) SW1 - the 2nd row of headers underneath the DIP switch. Do not install the DIP switch SW1 and install a 4-pin female receptacle on the 2nd row. This will provide the signal path for the Mobo to control the Si570 on the SR v6. 3. A correctly functioning RXTX V6. 3 is essential to success with the Mobo 4. 3. You will be plugging the Mobo into and out of the RXTX several times during the project. When trouble-shooting, one wants to be able to rely (at least initially) on a proven assumption that the problem does NOT lie with the RXTX! From Robert NQ0T: "Make sure your RXTXv6. 3 is working properly. The MOBO didn`t work for me when I first threw the switch. In the midst of inserting and removing the MOBO over and over again, things came loose on the 6. 3 that I had thought were fine. On several occasions, I had to pull off the MOBO, put on the PAF, and BPF`s and verify that the 6. 3 was doing what it was supposed to. Having a functional 6. 3, I found, helped immensely in getting the MOBO to run. " Use of up to 8 onboard filters multiplexed for both Rx and Tx and electronically switched. Each filter is on a plugin minifilter board, with flexibility of filter...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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