Telefunken Jubilee Export AM/FM Radio (1956)
This small Telefunken tabletop has classic German 1950s styling and
excellent performance. Built in 1956, it was dubbed the "Jubilee Export"
There's a bit of history behind this radio. It was purchased in 1956 by William
Schwann, creator of the famous
Schwann recording catalog
and presented as a gift to a young lady he was dating at the time. I bought it from
the owner in 2011, in Massachusetts.
The Schwann catalog was published for more than 50 years. In its heyday, you
could find a copy in virtually every record store in the United States, and
many others worldwide. As vinyl recordings fell out of favor, so did the
catalog, which ceased publication in 2001.
The Jubilee has a handsome veneered cabinet and a grille with gently
curving louvers. Here is the radio before and after restoration. As
you can see, I received it in very good condition. The exterior required
nothing but minor touch-ups and a little brass polishing.
One glance at the dial glass tells us this was an export model. The FM
band extends all the way up to 108 megahertz, whereas European FM radios
such as my Telefunken Gavotte 9 usually
stop at 100.
The Jubilee also receives the standard AM broadcast band and it can work
with an external phono player, plugged into a rear jack.
Here are the Jubilee's five tubes and their functions.
FM RF amp/FM converter
FM IF amp/AM mix-osc
FM IF Amp/AM IF amp
Ratio det/AM det/AVC/AF amp
The Sams service manual is
Set 39, Folder 15.
The Jubilee's design is typically European, packing lots of electronics
into a small space. Every tube performs multiple functions, except the
type EL41 output.
A peek inside shows the construction.
On the right, you can see the power transformer. Although compact in size,
this is not a cheap series-string radio.
The Jubilee chassis sits on rails inside the cabinet, secured by two screws on
the rear apron and a third screw holding the power tranny to a side bracket.
The yellow cylinders on the left are new-ish replacement electrolytic capacitors
for the power supply. These were not exact replacements, and the serviceman secured them to the
chassis with hot glue.
Strapped to their sides are the old brackets for the
ferrite loopstick AM antenna, which unfortunately is now missing.
When I bought the radio, the antenna was present, but hanging loose
from its wires. Before turning it over to be packed and shipped,
I removed the antenna and put it in my pocket. After we returned home
from Boston to Washington state, I couldn't find the antenna!
I'm not crazy about this funky capacitor installation. Hot glue is certainly not
my style (see Replacing Capacitors in Old Radios and TVs).
I'll reserve judgment until I see how the radio performs, however.
The next photo shows the Jubilee during its first trial. I used a metered variac to
slowly increase the line voltage while watching and listening for signs
The radio plays beautifully on FM, using the line cord as its FM antenna.
The AM band is silent, not surprising since the AM antenna is missing.
Removing the chassis requires disconnecting the speaker. I unsoldered the
blue and tan leads, first taking this photo as a reminder of where to reconnect them.
The tall black cylinder contains solid-state diodes, the rectifiers for the power supply.
The next photo shows the busy underside of the chassis.
The passive components, such as capacitors and resistors, are all smaller than their American
counterparts. This saves space, but makes servicing a challenge. Old paper capacitors frequently go bad
from absorbing moisture over the decades. This radio plays very well with the
originals in place, however, so I'll leave them alone for now.
At upper left in that photo, you can see the volume and tone control potentiometers.
They are constructed as two sections of a sturdy, sealed unit. At far right is the AM
tuning capacitor. With two independent tuners on two concentric shafts, the Jubilee's
tuning gear is a fairly complex business of gears, pulleys, and strings.
Built-in antennas are not necessarily interchangeable, since a given antenna will often
be tuned to that specific radio's "front end," or RF (radio-frequency)
circuits. You can buy a generic antenna from one of the suppliers listed on our
Parts page, but I happened to have a junked 1950s tube
portable with an intact antenna. Since it was available, I had nothing to lose by
trying it out.
In this photo, the salvaged loopstick antenna is the big rod lying in front of the chassis.
I have temporarily reconnected the speaker with clip leads.
It worked! The radio's volume is slightly lower on AM than FM, but the reception
is acceptable. The original Telefunken antenna had a sliding coil which you could
move for maximum signal during the alignment process. This antenna lacks an
adjustable coil, so it may not be as "hot" as the original, but it probably works as
well as any generic replacement that I could find.
This loopstick is too big the original antenna holders. I'll mount it inside the cabinet top,
where there's plenty of elbow room. I reused brackets from the junker radio, screwing them into
the top of the cabinet frame. Here, the antenna is mounted and ready to connect.
The pilot lamp still glows, but not very brightly, since it's coated with dust. I
popped it out for a cleaning while I had the chassis out. The lamp socket mounts
through a hole on the bottom of the mode switch frame, secured with a single screw
in a wire loop.
The cabinet was in fine condition, with only a few minor nicks and scratches. I cleaned the
plastic grille parts, polished the brass trim and knob inserts, and touched up the wooden case with
Howard's Restore-A-Finish. That product isn't suitable for cabinets that need serious
refinishing, but it's good for concealing little blemishes.
The chassis fits closely in the cabinet and requires care in reinstallation. The
molded support rails on the sides of the interior have sloping channels for tabs on
the front of the chassis. Tilt the chassis at just the right angle while sliding it in,
and it will just barely fit.
Here is the restored radio, playing happily on my workbench.
This Jubilee is definitely a keeper. It looks and sounds great, doesn't
take up much space, and it required very little work.
November, 2011 Update
Several months after I restored the radio, we were packing for another
trip and I found the original AM antenna in a little zipper pocket
in my suitcase. Somehow, I had overlooked it when searching before!
After I finish my current project, I'll remove the salvaged antenna
and install this one where it belongs.