11-10-2016, 11:43 AM
Although my interest in vintage radio has been in a very sharp decline over the past few weeks, I was confronted by this old Avo valve tester on a car boot sale this morning, and couldn't resist purchasing it. I was assured that it is in full working order, but always take such statements with "a pinch of salt!" On getting it home, I plugged it in and switched it on. The indicator lit, and the needle vibrated, but I was able to zero it OK with the control. There is no sign of any filament volts at the moment, so I will have to investigate, but the meter movement being OK is a goo sign.
It only has the very old B4 B5 and B7 valve-holders, plus some side contact ones (that I am not interested in). I will look round for a manual on the internet. I wonder if I am right in thinking that the main unit will work with the more up-to-date valve-holder station that I have seen in other Avo images of this device.
I have not yet looked inside, but have high hopes for it (at the moment).
I also wonder why it has four B5 valve holdrs and eight B7 ones?
Bob
![[Image: Avo_Valve_Tester_Medium.jpg]](https://s26.postimg.org/j4bbfb8l5/Avo_Valve_Tester_Medium.jpg)
It only has the very old B4 B5 and B7 valve-holders, plus some side contact ones (that I am not interested in). I will look round for a manual on the internet. I wonder if I am right in thinking that the main unit will work with the more up-to-date valve-holder station that I have seen in other Avo images of this device.
I have not yet looked inside, but have high hopes for it (at the moment).
I also wonder why it has four B5 valve holdrs and eight B7 ones?
Bob
