This video shows how you can build a working A-B battery for your tube Zenith Trans-Oceanic radio. Part I shows how to make the male connector needed to mate with the radio-side connector.
In the past April 2022 I've ordered and completed two of your battery boxes (ELM Photography) for my ZTO collection. I can attest to anyone not yet convinced that these are excellent. I especially like the period correct graphics. Just like being there (even though I hadn't been born yet) to have a truly portable Zenith shortwave. Portable as in 20 lbs net.
¿es posible utilizar el pack similar de la zenith 3000, quitando 2 pilas, para obtener 9 volts. (1,5x6)? o este pack tiene características distintas? Gracias...
Ed, while I am doing my best on these ZTO's, I do have one bug a boo issue. How to align one of the 7g605's to make it work , with battery. Have you any videos or suggestions? If I can get the four ( 4) I have aligned I have plans to sell them and keeping one back for myself. I'd certainly appreciate any help you can offer. I'm pretty well house bound for a while so I thought I may as well give it a shot. Thanks in advance.
Don B Don, not sure what you mean by align to work on battery. If it is working on AC power, it should also work on battery power. Make sure you have the AC plug inserted in the battery changeover switch on the rear of the chassis. Also 2 D cell batteries must be installed in the special D cell holder in addition to a 90 volt/9 volt AB battery connected to the large battery plug. Polarity must be correct. I can better assist if you email me directly at morrised2006@comcast.net
really REALY well done . I'm working on building the battery boxes and the connector was the one thing that was goofing me up. Where to get the male pins? Now I know!. Thank you very much.
It took a little doings and some good old fashioned telephone book work but I found a temporarily starting point. Using my local "with the helping hardware man" , steel rivets ( I'd looked in both Lowes and Home Depot and found only aluminum ) were the find of my Sunday drive. 1/8" dia. , 3/8"ths to 1/2" grip range , although dialed in at 43/64th's ( 12.xx? mm) ( I'm using a very old and somewhat reliable dial read out Vernier scale) which I ground down to just under , 33/64ths and so far it seems to work out pretty well. This one item, has been a real sticking point in all of my restorations of these really wonderful radios. I thought I was pretty good at improvisation , but I can guarantee this handy idea won't be lost on me . Out standing idea and my hat is off to the guy who figured this out. Thank you. So Much!
Ed Morris accurate and to the point Ed. This was all the tipping point I needed. I'll never look at another item of hardware without an alternative use.. All I need now is a good color graphics guy. I think I've got all of the batteries they applied to these radios. Any suggestions?
The original Zinc-carbon based batteries probably lasted 40 to 50 hours, depending on how the radio was used and its condition. An alkaline cell based battery may run the radio for 400 hours or longer, again subject to the same caveats.
The lathe is an Emco Unimat DB200 made in Austria. These were popular in the 1950's and 60's, regularly advertised in Popular Mechanics and hobby magazines. I found mine at an estate sale, but they are often found on eBay, where you can also find parts and accessories. An updated version, the Unimat 3 was introduced in 1976.
I know this might be seen as offensive ... but what about using the new dewalt 60v battery? *Maximum initial battery voltage (measured without a workload) is 60 volts. Nominal voltage is 54.
Joel Miller : I'm not familiar with the Dewalt 60v battery, but the Transoceanics need a 90v/9v supply for the tube plates and filaments. And the idea of a reproduction battery is to power the radio with a battery that looks like the original. There are, however, several different ways of providing the proper volts and mAmps to power a Transoceanic for a reasonable playing time and cost. Ten 9v batteries in series for the plates, and six D cells in series for the filaments is probably the lightest and least expensive way to go for about 40 to 60 hours of playing time.
+Giovanni Cultrera ¿Estás preguntando si se puede utilizar un paquete de baterías de un Zenith 3000 en un tubo de vacío impulsado Zenith Transoceánica ?
The tubes used in the Zenith Tran-Oceanics did not draw much current. At 90 volts, the tube plates draw about 20mA. The solid state Trans-Oceanics drew even less, about 15mA at 12 volts.
