Topband: RIG PROTECTION FROM BEVERAGES

[Petr Ourednik]

Wayne,

I am using the home made KD9SV front-end saver for long time on receiver
input and
I have never any troubles with blowing the receiver input port. Fast
high quality relays 
is th key, just to think about the protecting diodes of the relays which
are commonly 
used in these kind of circuits. I am not using them in order to avoid
IMD issues.

Regarding the lightning / storm protection I am always disconnecting
coax feedlines from
radios and grounding them OUTSIDE the house. It is uncomfortable a bit
but the most secure
for equipment I think.

Hope it helps,

73 - Petr, OK1RP

On Wed, Jan 16, 2013, at 04:22 PM, Wayne Willenberg wrote:
> As I originally explained in my first post on this subject, I have the 75
> Ohm feedline from my Beverages connected directly to the antenna input on
> my FT-5000.  I thought I should be concerned about lightning protection
> and
> the destruction of at least the front end of my receiver.
> 
> 
> Thanks to several of you who responded, I now know the larger concern
> should be the Beverage feeding my transmitted signal back into the
> receiver. This is probably of particular concern since I always use my
> linear at about 1500W when transmitting.
> 
> 
> However, no one proposed a solution.
> 
> 
> I have been looking on the Internet, and one possible solution is Array
> Solutions Model AS-RXFEP, RF Front End Protector.  The advertising claims
> to protect in the feedback situation as well as in a lightning situation.
> The insertion loss is claimed to be only 0.3dB.  For only $55 this seems
> like a good investment.  Does anyone have experience with this unit or
> would you please suggest an alternative?
> 
> 
> Thanks again for your help.
> 
> 
> 73, Wayne KK6BT
> _________________
> Topband Reflector
--
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