Eliot Ness asked what kind of radio ... I decided to make a short story ... Maybe it will be interesting to other colleagues...
In general, here he is a beautiful, powerful and stern Viking from Canadian forests ...
However, "power" and "severity" are more external than genuine, but more on that later ...
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Naturally, he did not immediately become so beautiful ... He arrived so shabby and not functional, but at least whole and complete. For which many thanks to a colleague from Canada who sent this radio console from Toronto to Ukraine ...
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I've noticed that various console radios of Canadian manufacture are much better looking than American sets, including your Viking, Peter. You did a great job in making that Viking look beautiful!
Inside the device was completely without any traces of interference and visually in excellent condition. The speaker is just perfect!
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The chassis is also perfectly preserved. What at first glance was somewhat upset because the low-power amplifier on the 6V6GT output lamp, its Soviet analogue 6П6С in the USSR was used only in low-cost radio receivers. Immediately, an association with Soviet 2nd and 3rd class radio receivers (VEFs and Records), which do not have a good sound, immediately arose ... But in the Viking, the 6V6GT radio lamp swings a 30 cm high sensitive dinmik with electric biasing, which dramatically increases the recoil over the sound The pressure was pleasantly surprised by the powerful bass and great micro dynamics ...
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What was even more pleasantly struck was the completely shielded chassis that completely kills all interferences and interferences in the room, silvered contours and ... loop antenna built into the rear wall of the console!
. This technical solution gave very good results, - none of my stationary receivers have such a minimum level of interference and interference from household appliances on all bands, including Wai Fay. The truth and the sensitivity of the receiver to the loop antenna is quite strongly inferior to the sensitivity when received by an external antenna.
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The receiver is five-band, - Broadcasting (Medium waves) and 4th stretched KV, from 19 to 49 meters. On the front panel there are 6 buttons of fixed settings in the NE range, - a tribute to the fashion of those years. ;) Undoubtedly it is convenient, it is a pity that since the late 40s, this chip has been abandoned in almost all countries ...
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Pete,
The "он" noun, as well as "оно/она" when used towards inanimate (неодушелвенньiе) objects in English become "it". "He/she" is used only towards animate (одушевленньiе) nouns, and even that is only if the gender is known and you want to stress it, else even cat/dog could become "it".
So when addressing the radio (you probably think "приймач") use "it" instead of "he".
PS. Sometimes things like boats, planes or a favorite piece of equipment like a radio set, could be affectionately addressed as "she".
PPS. By "severity" you could've meant "суровость"; if so, it is better translated as "rugged".
That is a beautiful radio, great job getting her to look that good!
Thank you Michael. With Google we only learn to translate correctly from Ukrainian to English.
But we are capable students.
Thank you Eliot Ness. I like to restore old radio cabinets. It is a great pleasure for me.
Friends, but what do you think, why the 6V6GT output stage lamp was placed in a black metallic mesh screen? Does this not prevent its cooling?
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Pete;
As you may know by know your set was built by Dominion Electrohome in Kitchener (formerly Berlin up until 1915) Ontario. Unlike many manufacturers Electrohome owned their own furniture company called DEILCRAFT, which meant that they could pretty much build whatever they, or in this case the T. Eaton Company, wanted for radio cabinets.
Part of the reason for the good sound quality may be the fact that they used a Rola made speaker in your set, Rola also made speakers for Zenith, and a number of other companies, in the U.S and Canada, whom unlike Philco and RCA, did not manufacture their own speakers. It could also be due to the cabinet design, the output transformer, and the audio output circuitry they chose.
I have no explanation as to why Electrohome chose to put a metal shield over the 6V6G power output tube, only that in that model year (1940-41) they manufactured a number of radios with that same feature, including Phonola, Serenader, and Minerva branded models. It really doesn't make much sense from an electrical point of view, unless they thought that it would help the tube warm up faster. By the way, why does the tube next to the 6V6 need an adapter?
Regards
Arran
Thanks Arran for the very interesting information.
""""By the way, why does the tube next to the 6V6 need an adapter?""""
It's very simple, I did not find the original radio light bulb 6SF5 and therefore replaced it with 6SQ7, which has very similar characteristics. In order not to violate the original installation, then made the adapter. By the way, if you have mentioned, then the problem of shifting the operating mode of this radio lamp is solved very originally. Not a honeycomb in a cathode, but a 1.5 volt battery in a grid lamp! I met this for the first time in my household radio.
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Could it be that 6V6 was found to exert some influence on something nearby? I do not see any wires around and the IF cans are shielded....there is a tube on the left, but it is far enough.
You could remove the shield and see if it degrades the noise performance. If it does not, then you could leave it off.
Did not detect any changes in the work of the radio lamp when taking off the screen. I doubt that this is done to avoid shocks. I think that here the secret may be that under the black metallic screen the output lamp may be better cooled down. The same decision was seen on the same German tuner Telefunken 56 years ago. Also very surprised.
Wow! Nice Viking! I have many DE sets in my collection, but I've never seen that particular model before...
How much did it cost to have it shipped over?
Thank you, Brad. In 2013, the transport company's services for sending this radio from Canada to Ukraine cost about $ 300.But I do not already think the exact amount.
I do not sell it right now
Pete;
There was an older version of a 6SF5 called a 6F5, but it has a grid cap, and the pinout is different, a 6J5 is similar again but I think that the trans conductance is different, why Electrohome chose to use two different single ended triode tubes right next to each other, only they could answer. A lot of sets used a 6F5 or a 6K5 along with a 6H6 to perform the same job as a 6Q7 or 6R7 would in another set, but it looks like D.E chose to wire up a triode as a diode in your set.
Yes, they call those small batteries bias cells, Electrohome must have had a liking for them in the 1940-41 model year as the Phonola console I have also has a pair of them. I wonder if they may have hired on some engineers from Rogers or Canadian Marconi as those companies were infamous for the use of bias cells, from about 1936-37 up until the war? I think that it must have been some sort of patent royalty avoidance scheme, possibly to RCA or Hazeltine Research, as all three of those companies used cathode bias/self bias, or fixed bias via the power supply, for their tubes before adopting those silly bias cells.
The company that developed and market these was P.R Mallory, a battery and radio parts manufacturer, the cells are carbon zinc and put out about 1.4 volts, at almost no current, there were various advantages they cited in their marketing but I think that they were tenuous at best, the only one I could understand is that it's a source of grid bias with zero AC ripple. In many cases you can rewire the tube to self bias, but modern watch batteries are not difficult, nor expensive to buy, though the polarity is opposite that of the old bias cells.
Regards
Arran
Hey Peter:
If you want a 6SF5 for your radio I have lots of them and would be willing to send you one for the cost of postage. My contribution to your Canadian radio from a Canadian.
Gregb