Topband: TX/ RX Antenna Switching

[Shoppa, Tim]

Getting away from what we are discussing now (limiters) and back to the original question... it really is just a few bucks for a relay for a rig (without separate T and R jacks) at the 100W level, to add separate T and R based on the amp key line.

It's ironic that for most of half a century, the ARRL handbook showed designs for T/R switches, and now those with entry level radios have to build the opposite of the T/R switch to have seperate T/R antennas :-).

Tim N3QE
________________________________________
From: Topband [topband-bounces at contesting.com] on behalf of Tom W8JI [w8ji at w8ji.com]
Sent: Wednesday, November 14, 2012 4:25 PM
To: ZR; Buck wh7dx; topband at contesting.com
Subject: Re: Topband: TX/ RX Antenna Switching

> 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.

I certainly agree everyone should give out schematics. Not providing a
schematic does not stop anyone from copying something, because anyone can
buy one and trace it out. Not providing a schematic only makes things rough
for someone trying to repair something, or trouble shoot a system.

I see more and more a tendency to not provide schematics, and this is an
alarming trend. This goes from my consumer gear (like my home security
system) to my Ham gear. Unfortunately, this is very common these days.

However, we also should not shoot from the hip and/or present things as fact
or present things as something we know when we are just guessing, assuming,
or making things up. This goes across the board to all topics.

Tom




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