Category Archives: Transceivers/Receivers Accessories

PALOMAR MICROPHONE SL41

 Photo: The Palomar SL41 comes in a beautiful packing

THE BRAND PALOMAR
In the “old” days Palomar was a world famous brand in the world of CB and 10 meter. Most famous were the high quality products like linear amplifiers. From most famous brand names the ownership changed during the years. Also Palomar switched from owner. Until last year Mr Eric Lewis (USA) claimed back the name that his father, the founder of Palomar,  had made great in the past. Palomar is now back to the roots of the Lewis family.

MICROPHONE SL41
The Palomar SL41 was introduced few weeks ago. It is a new technical concept for an electret microphone. Inside the housing is an alkaline battery that powers the microphone.

Photo: inside the housing is an alkaline battery

In Europe most CB’s have a 6-pin wiring and one of the pins supplies the voltage to the electret microphone. In USA most CB’s have a 4-Pin Uniden/Cobra wiring without a voltage supplied to one of the pins. That is why the battery is operated with an alkaline AAA battery.

ADAPTER CONNECTOR OR CABLE
For testing we connected the SL41 to a President Johnson-2. We have 2 very handy items to connect a 4-Pin Uniden/Cobra wired microphone to a 6-Pin President wired transceiver.

Photo: Adapter 4-Pin USA to 6-Pin President

C4PDF6 = Adapter, Converts 4-Pin Male to 6-Pin Female with Magnum DeltaForce/President Wiring.
CABLE 0008 = Microphone Adaptor Cable 4-Pin Male to 6-Pin Female with Uniden/President Wiring.
 

Photo: Uniden Adapter Cable 4-Pin Uniden to 6-Pin President

For the audio quality it made no difference whatever we used, the Adapter connector or the adapter cable.

 TEST RESULT
First we tested the dynamic microphones RoadKing RK56 and Astatic 636. As these are dynamic types we were not surprised the quality was not so good on the electret type radio Johnson-2.

The Palomar SL41 is an electret type and it  gave a much better performance than the original microphone from Johnson-2.

To finish the test we connected a RD104 (Red Devil) and the DM104M6B4B. These are amplified microphones. The audio quality and the level of volume had not much difference with the Palomar SL41. That is a remarkable good result.

I heard many good reviews from Palomar SL41 and the only thing I can say now: “TESTED AND TRUE”.

SPECIFICATIONS OF SL41:
The Palomar SL41 combines modern engineering and technology with time-tested design to provide the professional driver with the ultimate noise-cancelling microphone.

    • Classic Rugged Design
    • Active Circuit Microphone with Noise Cancelling Electret Element
    • 6 Conductor, Dual Shielded Cable – Custom Palomar Made Cable
    • 16″ Coiled Cable Section – Stretches to 9′
    • Over 1 Year Battery Life from Single AAA Battery
    • AAA Battery Included – Factory Installed
    • Industrial Grade Push-to-Talk Switch
    • Dual Mount – Machined Aluminum Button + Hanger
    • Wired for 4-Pin CB Radios

If you are interested in more technical information please read the document Technology and Design.

Photo: The Palomar SL41 – View from 4 sides