RCA Radiotron Number Type 80 Vacuum Tube Rectifier Black Plates Shoulder ST Shape Hanging Filaments

RCA Radiotron Number Type 80 Vacuum Tube Rectifier Black Plates Shoulder ST Shape Hanging FilamentsThis RCA Radiotron number type 80 rectifier tube was tested on our Paul Hart calibrated TV7 U. It measured a perfectly balanced 42 42 where minimum (65%) is 40 40 and 100% is 62 62. It has a dimpled sheet getter; mica snubbers; a silkscreened base; hanging filaments and outstanding flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202

copiously-illustrated book is in excellent condition

it has no gross issues such as hum or microphonics and will work excellently in your audio device that calls for a 12AT7

This lot of three new old stock

These four Tung-Sol 12A8GT tubes were tested for shorts

Three tested 40 and the rest measure in the mid 40s

Brands are indicated on the boxes

but the spine is in fine shape with no loose pages

These three US-made number / type 59 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

I have played them in my Radio Craftsmen RC-2 monoblocks (with adapters

3 rather than 7

a US Navy anchor logo and ribbed

1 milliamps with a transconductance of 2260 micromhos while Tube Two measured 23