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RADIO BROADCAST ADVERTISER
jgM' Operated ( >rlISgg^Pd ) One Switch Oniu^ * HiO '
The '•MIDLINE" Condenser
Gives better separation of wavelengths than previous types. Its full-floating rotor with removable shaft, easily adapts it to any scheme of single-control, multiple condenser operation.
"HAMMARLUND JR"
A high-ratio, shielded midget condenser for use wherever small variable capacities and fine tuning are required, Baseboard or one-hole panel mounting. Knob included.
— —
SlideA ssetnbled ALUMINUM SHIELD
Strong, neat, quickly and easily assembled. Designed to enclose complete tuning unit, tube and socket. An efficient aid to selective tuning. Greatly improves tonal quality.
The "AUTO-COUPLE'
A scientifically correct assembly of Spacewound Coil and "Midline" Condenser. The primary coupling is automatically varied at each condenser setting. Coil and condenser sold separately.
The
"HAMMARLUND
In The
H am marlund -Roberts
Pictured here are Hamm arlund's contributions to the splendid success of the HammarlundRoberts "Hi-Q" Receiver — the supreme effort of ten leading American radio engineers.
Hammarlund Products were selected for just two reasons — their established efficiency in performance and th eir unsurpassed quality of workmanship.
Every Hammarlund Product has back of it the tradition of high ideals and sixteen years of leadership in the man ufacture of precision instruments for telephone, telegraph and radio use.
The designers of fifteen other featured circuits have this season officially specified the use of Hammarlund Products. This is a testimonial that speaks for itself.
Write for folders describing Hammarlund Products for use in all of the new popular circuits.
HAMMARLUND MFG. CO.
424-438 W. 33 rd Street, New York City
EQUALIZER
A compact, efficient variable condenser of small capacity, for neutralizing against undesirable oscillations or equalizing the capacities of multi-tuned circuits.
am marlund
H-R "Hi-Q" Foundation Unit
Contains Micarta drilled front panel, sub-panel, shields, equalizers, resistance, extension shaft, wire, solder, nuts, screws and all special accessories for building the Hammarlund-Roberts "Hi-Q" Receiver.
f Fl E C fS /ON
PRODUCTS