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Very interesting! Yes you actual need to ground grids and add bias if you are an SSB enthusiast! It will not "clean things up" but it should not be that dirty to start with. The fact that it has TV Sweep Tubes in it does not make it dirty how the unit is operated in use though and aging components can make it dirty. No on SSB the bias scheme makes a bigger difference. While you can operate a tube amp in class 6 on SSB and not kill it quick it will be dirty and sound as it should for obvious reasons. That is why people went to AB1. A tube is much more forgiving that a transistor in this regard. If you where operating on AM it would not matter much.

Life cycle between TBO should drasticly increase. Today life cycle is huge for use sense they tubes that in the 1980's where often had new good pulls for well under $10 are now $30-$65 a tube(not just your specific tubes mentions but sweep tubes in general). No one is really making new sweep tubes the only tubes still being produced are those popular with audio and guitar amps and those that where dedicated RF tubes. That said the new ones are Chinese and no where near as good as the old tubes made in USA, Europe and Russia back in the hey day of tubes.

<blockquote data-quote="Onelasttime" data-source="post: 624713" data-attributes="member: 21190">Very interesting! Yes you actual need to ground grids and add bias if you are an SSB enthusiast!&nbsp; It will not &quot;clean things up&quot; but it should not be that dirty to start with. The fact that it has TV Sweep Tubes in it does not make it dirty how the unit is operated in use though and aging components can make it dirty. No on SSB the bias scheme makes a bigger difference. While you can operate a tube amp in class 6 on SSB and not kill it quick it will be dirty and sound as it should for obvious reasons. That is why people went to AB1. A tube is much more forgiving that a transistor in this regard. If you where operating on AM it would not matter much. Life cycle between TBO should drasticly increase. Today life cycle is huge for use sense they tubes that in the 1980&#039;s where often had new good pulls for well under $10 are now $30-$65 a tube(not just your specific tubes mentions but sweep tubes in general). No one is really making new sweep tubes the only tubes still being produced are those popular with audio and guitar amps and those that where dedicated RF tubes. That said the new ones are Chinese and no where near as good as the old tubes made in USA, Europe and Russia back in the hey day of tubes.</blockquote>

[QUOTE="Onelasttime, post: 624713, member: 21190"] Very interesting! Yes you actual need to ground grids and add bias if you are an SSB enthusiast! It will not "clean things up" but it should not be that dirty to start with. The fact that it has TV Sweep Tubes in it does not make it dirty how the unit is operated in use though and aging components can make it dirty. No on SSB the bias scheme makes a bigger difference. While you can operate a tube amp in class 6 on SSB and not kill it quick it will be dirty and sound as it should for obvious reasons. That is why people went to AB1. A tube is much more forgiving that a transistor in this regard. If you where operating on AM it would not matter much. Life cycle between TBO should drasticly increase. Today life cycle is huge for use sense they tubes that in the 1980's where often had new good pulls for well under $10 are now $30-$65 a tube(not just your specific tubes mentions but sweep tubes in general). No one is really making new sweep tubes the only tubes still being produced are those popular with audio and guitar amps and those that where dedicated RF tubes. That said the new ones are Chinese and no where near as good as the old tubes made in USA, Europe and Russia back in the hey day of tubes. [/QUOTE]

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