Behringer Xenyx 802 Mods

Behringer Xenyx 802 mixer

The 802 audio mixer from Behringer is a basic and compact unit designed primarily for home/hobby use. While all the basic needed features are included, it does lack some of the extras found on larger mixers. A really useful function of any mixer is the ability to send the audio signal out of the mixer to an effects unit and then have the signal return to the mixer for level adjustment. Read Complete Article...

Kenwood TS-850 Memory Backup Battery Replacement

Kenwood TS-850 Memory Loss

Because of the age of the design and components used, the circuit uses a RAM chip. Using RAM has a drawback in that it requires power to retain information. This power is supplied from a small memory backup battery. Modern designs use NVRAM (Non-Volatile RAM) which retain the information without requiring power. Read Complete Article...

SignaLink True CW Keying

What’s a SignaLink?

A SignaLink is a small unit manufactured by Tigertronics which functions as an interface between a computer and transceiver to enable the use of digimodes. The latest version of the SignaLink connects to the computer using a standard USB cable. The connection to the transceiver is made by a RJ45 (ethernet) socket on the rear of the unit. The other end of the RJ45 cable is terminated to suit the radio. Wire jumpers inside the unit allow the SignaLink to be used with any radio. Tigertronics also supply pre terminated RJ45 cables and pre-configured jumper blocks. Read Complete Article...

Yaesu FT-747 Internal USB Soundcard Modification

How I modified the Yaesu FT-747 to incorporate an internal USB soundcard to allow it’s use on digital modes. The modification has a minor downside, this being that the microphone is open while transmitting signals via the USB soundcard. The only way around this problem without building an audio switching circuit is to remove the microphone from the radio. Read Complete Article...