Hugh Hetherington Hearing Aid Museum
Hugh Hetherington Hearing Aid Museum

The Hearing Aid Museum

Hearing Aids of all types—Ear Trumpets, Carbon Hearing Aids, Vacuum Tube Hearing Aids, Transistor Hearing Aids, Body Hearing Aids, Eyeglass Hearing Aids and much more!

Home Enter the Museum About Us Contact Us

FREE Subscription to:
Hearing Loss Help
The premier e-zine for people with hearing loss

Your email address
will never be
rented, traded or sold!

Your First Name:
Your E-mail:
Search this site:

 Results per
 page

 all words
 any words


Click on the "General Information" button (top button above) for an overview and general information on this category of hearing aid.

 

Body Type Transistor Hearing Aids

Zenith Model ZA-323 FM Training Hearing Aid

The Zenith Model ZA-323 FM Training Aid was a body style transistor hearing aid manufactured by the Hearing Aid Division of the Zenith Radio Corp. around 1975.

The Zenith Model ZA-323 FM Training Aid measured 2 9/16" x 1 11/16" x ⅝" thick (6.4 x 4.3 x 1.6 cm), and weighed 2.2 oz. (64 g) without the battery.

The case was brushed aluminum with a cream-colored plastic top and bottom.

Click picture for larger view

 

Back

 
Top view of the Zenith Model ZA-323 FM Training Aid showing the 1 to 7 volume control/on-off switch (top left), the square microphone grill (center) and the 3 position "M" (microphone), "B" (both microphone and ?FM trainer) and "T" (?FM trainer) positions . It doesn't appear that this hearing aid had a t-coil so the "T" above probably doesn't refer to a t-coil position.

 

Click picture for larger view

 
The left side of the Zenith Model ZA-323 FM Training Aid showing the the two-position "FM" & "A/L" (?auditory learning) switch.

I think this hearing aid had 2 FM receiving frequencies. In the FM position, the student heard the teacher. In the A/L position, the student listened to a recorded auditory training program probably from a tape player.

 

Click picture for larger view

 
View of the right side of the Zenith Model ZA-323 FM Training Aid hearing aid showing the 3-hole receiver cord jack (center). The receiver and receiver cord are missing.

 

 

Click picture for larger view

 
Bottom view of the Zenith Model ZA-323 FM Training Aid hearing aid showing the closed battery door with the name "Zenith" and below it "FM Training Aid" and the model number "ZA-323".


 

Click picture for larger view

 
Rear view of the Zenith Model ZA-323 FM Training Aid hearing aid showing the battery door partially opened from the bottom of the case. A spring clip held the battery door shut.

 

 

Click picture for larger view

 

Bottom view of the Zenith Model ZA-323 FM Training Aid hearing aid showing the battery compartment.

This hearing aid took an "N" size 1.4 volt No. 401 mercury battery.

To the left of the spring on the right is a little adjusting hole labeled "PWR" (above) and "FR" (below) to ?adjust the output power.

 

Click picture for larger view

 
Rear view of the Zenith Model ZA-323 FM Training Aid hearing aid showing the pocket clip at the top.

 

 

 

 

Click picture for larger view

 

(If a larger picture doesn't appear, you may have to turn your pop-up blocker off)