Title: Viking II restoration Post by: xe1yzy on August 16, 2006, 11:39:53 AM Hello to all
Im start to restore a Viking II & VFO122, I planning change all electrolitics, black beautis, and paper caps, any other idea for " a must to" in this rig? Regards ! Title: Re: Viking II restoration Post by: WD8BIL on August 16, 2006, 12:13:53 PM http://www.amwindow.org/tech/htm/viking2.htm
Make sure all the frequency restricting caps are taken out of the entire modulator. Title: Re: Viking II restoration Post by: The Slab Bacon on August 16, 2006, 02:17:25 PM http://www.amwindow.org/tech/htm/viking2.htm Make sure all the frequency restricting caps are taken out of the entire modulator. that circuit works even better if you use a 12AU7 with both sections in parallel instead of the 6C4. That has become my standard speech amp / driver circuit for all 100w table top boat anchor tx's. The Slab Bacon (That is also basically the stock driver in a ranger.) Title: Re: Viking II restoration Post by: The Slab Bacon on August 16, 2006, 02:18:47 PM http://www.amwindow.org/tech/htm/viking2.htm Make sure all the frequency restricting caps are taken out of the entire modulator. Hey, Buddly, Where ya been hidin?? Havent heard you on for a Looonnnngggg time!! Title: Re: Viking II restoration Post by: xe1yzy on August 16, 2006, 10:12:06 PM Thanks a lot guys...
Digging in the junkbox I found a Thordarson Interestage transformer, the ratio is 1-4, Type, T45901... ::), I guess is for use with 6C5, what about a smoke test with this?... Title: Re: Viking II restoration Post by: The Slab Bacon on August 17, 2006, 08:04:53 AM Thanks a lot guys... Digging in the junkbox I found a Thordarson Interestage transformer, the ratio is 1-4, Type, T45901... ::), I guess is for use with 6C5, what about a smoke test with this?... I guess it depends on how you are running the modders. If you are running AB1 you may be ok. If you run them AB2 and they need a little grid current, the 1:4 may swamp out a single 6C4 driver. If you have it, try it and see how it works. Antique enlectronic supply has a nice universal driver replacement that works fine. You can play with the taps and make it do whatever you want it to do. and they're relatively cheap. It is a Hammond unit, and I believe it is around $10 or $12. Title: Re: Viking II restoration Post by: xe1yzy on August 18, 2006, 05:45:24 PM Thanks a lot guys... Digging in the junkbox I found a Thordarson Interestage transformer, the ratio is 1-4, Type, T45901... ::), I guess is for use with 6C5, what about a smoke test with this?... I guess it depends on how you are running the modders. If you are running AB1 you may be ok. If you run them AB2 and they need a little grid current, the 1:4 may swamp out a single 6C4 driver. If you have it, try it and see how it works. Antique enlectronic supply has a nice universal driver replacement that works fine. You can play with the taps and make it do whatever you want it to do. and they're relatively cheap. It is a Hammond unit, and I believe it is around $10 or $12. Ok, many thanks, well this rig needs a complet overhauling, its a good idea check all the parts needed and yes buy a hammond transformer, after all the fun ends as soon as we put the rig back in the air isn't?, no to many Amers here in Mexico :(, but I enjoy a lot this rigs in CW anyways, Thanks Slab Bacon! |