Test Jig

This is the test jig for my TCXOs

From left to right are

• A custom temperature controller

• The temperature controlled oven for the TCXO

• A 4:1 Balun to match the output of the TCXO to 50 ohms.

Here is a view inside the temperature controller, housed in a nut tin.

Clockwise from the bottom right are

• An Arduino Mega that is commanded via usb from the test PC

• A dual H bridge that used to drive a Peltier cooler and some Resistance heaters with pulse width modulated 12V

• Batteries to power the TCXO

• A dual Relay board to control the fan

Here is a view inside the temperature controlled oven

The white power resistors are used to heat. There are three TO-92 case temperature sensors below the board and the board is mounted in the oven. With the cover off, the adjustment is easily accessible.

Here is a closer view of the oven with the Peltier cooler on top

The cooler is mounted on the oven with a large fan and heatsink to cool it.

Here is a view of the part of the Peltier cooler that hangs down into the oven.

There is a small heatsink and fan. They are basically the largest that I could fit, not optimal. but better than nothing.

Here are some of my other sites:

Modifications to my RV, including solar power and extra storage: https://sites.google.com/site/marksrvmods/

My Controleo2 based SMT Reflow Oven: https://sites.google.com/site/markscontroleo2build/

My TS-590S MODs including a buffer board install for a panadapter: https://sites.google.com/site/marksts590smods/

An explanation of various TCXO Characteristics in Kenwood TS-590 Radios: https://sites.google.com/site/markstcxomeasurements/

Modifications to allow use of an external clock in a Perseus SDR: https://sites.google.com/site/perseusmods/

How I use Spectrum Lab Software to do frequency measurements: https://sites.google.com/site/spectrumlabtesting/

Pictures I took of the 2017 Total Solar Eclipse from Menan Butte, Idaho: https://sites.google.com/site/marks2017eclipsephotos/

Revised February 22, 2018