Topband: TX/ RX Antenna Switching

[ZR]

How do we know what it has with no schematic available? It could be $1-2 
worth of parts.

I recommend that nobody buy anything from DXE that does not support an at 
home repair.

Carl
KM1H


----- Original Message ----- 
From: "Tom W8JI" <w8ji at w8ji.com>
To: "Buck wh7dx" <wh7dx at hawaii.rr.com>; <topband at contesting.com>
Sent: Wednesday, November 14, 2012 8:07 AM
Subject: Re: Topband: TX/ RX Antenna Switching


> By the way Buck, there is more to this than some people will tell you.
>
> The DXE switch uses a unique RF limiter that kicks in hard at about 23 
> dBm. Below that level there is no intermod at all!! It will not 
> deteriorate the receiver, like normal cheap back-to-back diode systems.
>
> If you need a receiver limiter and do not want to hurt receiver dynamic 
> range on modern receivers, it takes far more circuitry than cheap 
> back-to-back diodes.
>
> 73 Tom
> _______________________________________________
> Topband reflector - topband at contesting.com
>
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