Small Tube Amp

[Mudfoot]

Does anyone currently make a small tube amp with output below 200 watts?

 

[gamegetter]

keep your input low and this might work

www.rmitaly.com

 

[fodendaf]

or zetagi's bv131

 

[Shockwave]

Beware, just like all the other sweep tubes the Russian EL-509 used in those amps is no longer in production and sell for over $80 a piece today. To add to the confusion, another tube was recently developed for audio use with no anode cap for RF use and it also carries the old EL-509 part number.

 

[Mudfoot]

I was hoping there was some obscure builder out there that made decent little amps.

 

[project]

Use a 4cx300 tube and don't push it hard. It will cruise under 200 all day long.

 

[Mudfoot]

Use a 4cx300 tube and don't push it hard. It will cruise under 200 all day long.

In which amp?

 

[project]

There are plenty of ppl that can build one. I can make a call tomorrow and get u a price

 

[Mudfoot]

Thanks

 

[exces3]

what band(s)?
what mode(s)
grid driven or grounded grid?


how much input power is available?

any other issues? mobile, marine, airborne, etc ??

 

[Shockwave]

Unless it's coming from a top notch builder I'd skip most tetrode amps. Too many extra areas the builder could easily make mistakes in when compared to a grounded grid triode. Anything from the "I don't need to neutralize a high gain tetrode" to "who needs a shunt regulator on the screen grid" mentality quickly compromises the reliability and stability of many tetrode amps.

 

[gamegetter]

Beware, just like all the other sweep tubes the Russian EL-509 used in those amps is no longer in production and sell for over $80 a piece today. To add to the confusion, another tube was recently developed for audio use with no anode cap for RF use and it also carries the old EL-509 part number.

can the pl519 be used shockwave?

 

[dave457]

They are plenty on used market

 

[Shockwave]

can the pl519 be used shockwave?

I believe the EL519 uses a higher filament voltage than the 6.3 volts used on the EL509. Other than that, the tubes are the same.

 

[Mudfoot]

They are plenty on used market

I was just wanting something unique. Thought maybe there was an obscure builder out there that had something useful for 10/11 meters.