As described last week, I am seeking improved signal distribution between antennas and receivers in my shack.

In the above diagram, you can see the new pathways I will create between antennas and receivers, both single and dual channel. Instead of multiple relay switches, I will you two, multi-channel distribution amplifiers. These distribution amps cost around $40 each, with 60 dB isolation between each receiver. I will use a 5V USB Power Distribution board.

If you are interested, you watch a video review of these four receiver active distribution amplifiers here.

A relay will be used to select antennas for Channel A, upper. These include my main ham antennas, the Wellbrook loop, and the west LZ1AQ loop from the array. Channel B, lower, will be dedicated to the east array loop.

So, with this setup, I will be able to diversity reception and noise cancelling with a variety of different combination of antennas, rather than just the loop array alone.

What’s more, using a distribution system, I will be able to do comparisons with more than one receiver at one time. This was not possible with the previous coax switch arrangement.

Improved Signal Distribution for Multiple Analog Cancellation

My ANC-4 is hard wired into the main antenna. This let me use two different noise probes to phase against either the beam or dipole main antennas. The ANC-4 does a good job with transceivers, as designed.

But now, I will also be able to connect noise probes into the DXE NCC-1. Places for noise probe injection are shown above with a red asterisk.

So, that’s the new design for improved signal distribution making best use of multiple antennas and receivers. I hope to get this up and running before the end of winter. Our Calgary winter this year has been very cold and no fun at all.