Re: show your mic

chris gress <Chrisg0wfh@...>

My basic mic

On Sun, 22 Apr 2018, 11:00 Mvs Sarma, <mvssarma@...> wrote:
lovely design

MVS Sarma

On Sun, Apr 22, 2018 at 3:08 PM, Gordon Gibby <ggibby@...> wrote:

Three pieces of wood, and cheap momentary contact push button.

On Apr 22, 2018, at 04:43, Mvs Sarma <mvssarma@...> wrote:

 please check whether the mic body is connected to chasis ground.
i mean the positive bias voltage for mic should come on independent pin and NOT to the body pin of the eletret element.

In case you are using a dynamic mic, perhaps we need more gain and your need to shout appers logical.


MVS Sarma

On Sat, Apr 21, 2018 at 11:27 PM, MAX <max@...> wrote:

Speaking of mics, I have to raise my voice almost to the level of shouting to get 5 watts out on 40 meters.  Is this normal or should I look for a problem?




Max K 4 O D S.


I've Never Lost the Wonder.


Antique Electronics Site:



From: [] On Behalf Of Mvs Sarma
Sent: Saturday, April 21, 2018 7:17 AM
Subject: Re: [BITX20] show your mic


I had grabed a taperecorder mic with 3.5mm mono pin.
 replaced the cable with 2+shield.had a small pushed switchmounted and wired.
 repalced the 3.5mm momo pin to stereo pin. Here is a image of my mic.The pp9 battery helps to imagine the mic size.

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