Details
Used old stock type 24/24A 5 pin tetrode with a globe S-14 bulb and top cap. The main difference between the 224 and 224A is that the 224A is quicker heating. Various brands.
Used old stock type 24/24A 5 pin tetrode with a globe S-14 bulb and top cap. The main difference between the 224 and 224A is that the 224A is quicker heating. Various brands.