On Sat, 04 Aug 2007 05:44:07 -0700, Telstar Electronics
wrote:

|On Aug 3, 6:14 pm, "Frank" wrote:
| Why are you showing the use of coax to connect the board ? That board has
| NO RF filtering and it is NOT shielded in any way. I can imagine what will
| happen when it is incorrectly installed in a radio or not shielded with a
| filtered supply and filtered input.
| It looks like a half finished design. The LED is of no use as that will be
| inside the radio and only indicates what the level is at the board - not
| what it is on the carrier from the radio. You will also need an
| oscilloscope to set it up correctly. I would also be interested in you
| telling me how you think the average home user can adjust FM deviation
| correctly without the use of a test set!
| I wouldn't bother buying one of those, most radios have a better circuit
| built in anyway, so having two in series would be of very little use and
| would distort the audio or cause extra power consumption in a handheld.
| The product is of no use! It would have been good in the 80's before the
| K40 and Protel mics were used on CBs. Current CBs and amateur equipment
| would not tolerate that circuit as the impedances are completely wrong too.
|
| You haven't researched and appear to have very little working AF/RF
| knowledge.
|
|Coax is certainly necessary... and the board is fully shielded. What
|do you think that tin plate is for?
|The rest of your comments show that you obviously have not read the
|installation manual. I suggest you do so at http://www.telstar-electronics.com/VoiceMax%20B.pdf
|Thanks for your comments.
|-----------------------

bovine excrement.

The board is not fully shielded. From the pictures I see components on
one side. If it were fully shielded then I should not see conponents
but some form of shielding.

james