The very first Zenith "Transoceanic" radio

[Electronic M]

Originally Posted by decojoe67

I wanted to add too that I have purchased a "batpack" (http://www.batpack.com/) for my '42 7G605. The one thing to remember is that you need the secondary battery for the loctal tube voltage at 10.5 volts. On my set it just looked like two cut wires off the battery plug. I guess they had clips on them originally. It's quite an expensive set-up with the cost of the pack and batteries, but the set plays like a champ with no AC line interference!

I've seen ones that use a DC-DC converter and something like 6 D cells....I actually started to make my own. I've got a gutted battery shell, and a working DC-DC converter, but the converter makes RF noise. I was going to shield the whole thing and filter out the noise, but mid project I had to move so the project has been shelved for a while (one of these days I plan to complete it). I got the circuit for the project out of a 90's issue of ARC....I had to source new parts for some that were NLA....Given what I've learned since then, I could probably improve on the circuit a good bit.

[decojoe67]

Originally Posted by Electronic M

I've seen ones that use a DC-DC converter and something like 6 D cells....I actually started to make my own. I've got a gutted battery shell, and a working DC-DC converter, but the converter makes RF noise. I was going to shield the whole thing and filter out the noise, but mid project I had to move so the project has been shelved for a while (one of these days I plan to complete it). I got the circuit for the project out of a 90's issue of ARC....I had to source new parts for some that were NLA....Given what I've learned since then, I could probably improve on the circuit a good bit.

Not being skilled in electronics a "plug-in-and-play" unit was the choice for me. This "batpack" unit uses 60 AA's and 6 D's. If you are powering a '42 7G as I am, you must also use the extra D battery with the supplied holder.