Hi, I really would like to know if radio and tv tubes are the same.I have seen many diffent numbers on e-bay. Thanks, Ya,ll pass a good time.

Many TV tubes don't work in radios - unless you want to design a new circuit around them. The value of most TV tubes is essentially zilch.

Depends on the tube number, or cross reference number. Some tubes are used in TV's and radios. It's usually the older B&W TV sets, that have some usable tubes for radios.

If you are looking to build some of your own projects, however, television tubes make for an excellent and inexpensive source of tubes. For instance, there is an excellent triode-pentode, that comes in a tall 9-pin package that is meant for vertical deflection, that makes an excellent compact audio tube, with both the 1st and 2nd audio in the same package. I forgot the number, and mine are all in storage somewhere, but there are several numbers of equivalent design that work well. I even built a complete push-pull amplifier using just two tubes. Since the tubes are designed for the vertical output circuit of a television, they aren't best suited for audio use. The pentodes have a rather harsh and bright sound. However, with a suitable negative feedback circuit, this can be corrected.

There are plenty of other tubes that make for good use in radio work, as well. One in particular that comes to mind is a smaller triode-pentode type tube, perhaps the 6GH8. The triode makes for a good cathode fed RF input stage for a simple FM radio, and the pentode stage makes a good super regenerative detector. One could also use a 12AT7, but with so many 6GH8 (and variants) being practically thrown away, why pass up a good deal?

T.

RF-wise, TV's are basically a VHF/UHF receiver. Some audio and LV power supply tubes may be used in communications receivers and audio amplifiers.

Some of the older TVs had some low noise, pretty hot triodes in the front end RF amplifiers.

marv

:If you are looking to build some of your own projects, however, television tubes make for an excellent and inexpensive source of tubes. For instance, there is an excellent triode-pentode, that comes in a tall 9-pin package that is meant for vertical deflection, that makes an excellent compact audio tube, with both the 1st and 2nd audio in the same package. I forgot the number, and mine are all in storage somewhere, but there are several numbers of equivalent design that work well. I even built a complete push-pull amplifier using just two tubes. Since the tubes are designed for the vertical output circuit of a television, they aren't best suited for audio use. The pentodes have a rather harsh and bright sound. However, with a suitable negative feedback circuit, this can be corrected.
:
:There are plenty of other tubes that make for good use in radio work, as well. One in particular that comes to mind is a smaller triode-pentode type tube, perhaps the 6GH8. The triode makes for a good cathode fed RF input stage for a simple FM radio, and the pentode stage makes a good super regenerative detector. One could also use a 12AT7, but with so many 6GH8 (and variants) being practically thrown away, why pass up a good deal?
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:T.
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