@@TheHWcave - I find a good analogue meter is useful when aligning/peaking a radio receiver. Connected across the speaker terminals and measuring AC (usually a 400Hz or 1KHz modulation tone) you can easily see the meter rise and fall as you adjust each trimmer or oscillator coil. It gives much more confidence that you’ve reached a peak than just using your ears. A digital meter is usually too slow to settle on a value and hard to follow in the same application.
Yes, thanks for sharing I can totally understand that this a case where analog shines. I was just wondering because the AVO 8's sensitivity on AC is pretty low but across the speaker output that does not matter.
@@TheHWcave Hi, yes of course you can ask. I restore old valve radios, I use it for testing parts, measuring voltages and alignment. I do have a bench digital meter also, but I have used AVOs since the late 1970s when I was in the Army and have enjoyed using them ever since, it was the workhorse of electrical instruments at the time and up until the late 1990s. It is sufficiently accurate for my purposes in my small world of valves, condensors and resistors. There is somthing about an analogue meter that has always captivated me.
I still have my Father’s personal AVO 8 MkII. In the leather case (obtained decades later than the meter) is the original sales receipt from May 1959. It cost him £19 19s. 6d. Accounting for inflation that’s about £385 in today’s money. The 15v battery is renowned for leaking in these and has been unobtainable for some time. I recall that in the late 1980’s to early 1990’s there was an electronic dc to dc converter available in the RS catalogue. It stepped up the 1.5v battery to 15v just for the ohms x100 range. These things were so ubiquitous in the UK that if you obtain the service sheets for an old radio or TV from the 50’s or 60’s they specify all the test point voltages on the circuit as ‘measured with an AVO 8’.
I believe the tests for the F15 falcon in the USA also specify voltages "as measured by an AVO 8". Also: putting both selectors on the "AC" and "DC" positions will short out the meter to prevent it wildly moving around during transit.
I still have my grand dads AVO8. He was a radio engineer in WW2. I don't use it. Obviously i have much more modern digital meters for electronics work.
ruclips.net/video/4d30UhA_dxc/видео.html actually its really a small mod to a ready-built module. You can't make one yourself for the price. Similar modules are available from other places
I still use a model 8, wouldn’t be without it 😊
Curious. Can you share what you are using it for?
@@TheHWcave - I find a good analogue meter is useful when aligning/peaking a radio receiver. Connected across the speaker terminals and measuring AC (usually a 400Hz or 1KHz modulation tone) you can easily see the meter rise and fall as you adjust each trimmer or oscillator coil. It gives much more confidence that you’ve reached a peak than just using your ears. A digital meter is usually too slow to settle on a value and hard to follow in the same application.
Yes, thanks for sharing I can totally understand that this a case where analog shines. I was just wondering because the AVO 8's sensitivity on AC is pretty low but across the speaker output that does not matter.
@@TheHWcave Hi, yes of course you can ask. I restore old valve radios, I use it for testing parts, measuring voltages and alignment. I do have a bench digital meter also, but I have used AVOs since the late 1970s when I was in the Army and have enjoyed using them ever since, it was the workhorse of electrical instruments at the time and up until the late 1990s. It is sufficiently accurate for my purposes in my small world of valves, condensors and resistors. There is somthing about an analogue meter that has always captivated me.
I still have my Father’s personal AVO 8 MkII. In the leather case (obtained decades later than the meter) is the original sales receipt from May 1959. It cost him £19 19s. 6d. Accounting for inflation that’s about £385 in today’s money. The 15v battery is renowned for leaking in these and has been unobtainable for some time. I recall that in the late 1980’s to early 1990’s there was an electronic dc to dc converter available in the RS catalogue. It stepped up the 1.5v battery to 15v just for the ohms x100 range.
These things were so ubiquitous in the UK that if you obtain the service sheets for an old radio or TV from the 50’s or 60’s they specify all the test point voltages on the circuit as ‘measured with an AVO 8’.
I believe the tests for the F15 falcon in the USA also specify voltages "as measured by an AVO 8".
Also: putting both selectors on the "AC" and "DC" positions will short out the meter to prevent it wildly moving around during transit.
Great analysis - what a devious design! We have it easy these days 😂
I still have my grand dads AVO8. He was a radio engineer in WW2. I don't use it. Obviously i have much more modern digital meters for electronics work.
Now I want one...
Which video shows the dc to dc converter ????
ruclips.net/video/4d30UhA_dxc/видео.html actually its really a small mod to a ready-built module. You can't make one yourself for the price. Similar modules are available from other places
@@TheHWcave Thanks