[Elecraft] K2 Volume

[Tom Hammond]

I'm using Motorola external Amplified Speakers and they work GREAT. Can be 
found at hamfests in the $15-$20 range most of the time.

73,

Tom


At 03:36 PM 9/16/03, Don Brown wrote:
>Hi
>
>A simple test of the LM380 would be to set the side tone to a known value 
>say 50 and measure the RMS volts across the speaker. As the side tone is 
>generated in the MPU/DAC the drive signal should be the same in all K2's. 
>If it varies from K2 to K2 then the gain of the LM380 is the culprit.
>
>I have tried several external speakers. The passive ones have not been as 
>loud as the K2 built in speaker. I tried several amplified computer 
>speakers and found many of them will not tolerate RF fields near by. They 
>will hum when the transmitter is keyed. Some of the better ones do not do 
>this but they are in the $100 price range. I had problems with the cheap 
>$20 computer speakers. I have not tried it on the K2 but I use a Kenwood 
>remote speaker in my car on my Kenwood TMV-7 it is a DFK-7C and it is very 
>loud but still small. It may work with the K2.
>
>Don Brown
>KD5NDB
>
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