I have many Amperex 7062s and think they were for the 3910 and 5910s when I had them. In the Tube Substitution Handbook, I looked up 6829 and found 12AV7s and 5965, which is noted as not working in all circuits, but this is not relevant in this case. The 7062s are shown to substitute for 5965s and E180CCs. So I think you can use 7062s for the 6829s. I think that is why I have so many.
I would check with John Tucker at Exemplar, however.
I should note that the 6829 and 7062s are shown on the Brent Jessie page as lower gain than 12AV7s.
I would check with John Tucker at Exemplar, however.
I should note that the 6829 and 7062s are shown on the Brent Jessie page as lower gain than 12AV7s.