Receiver Antenna Matching (was: Re: [Milsurplus] R-388)

[Rev. Don Sanders]

You need to check each transformer as i have found a couple that have
increased loss below 10 mhz. Otherwise i have used them for several receiver
inputs.

Healthfully yours,
                          DON
----- Original Message ----- 
From: "D C *Mac* Macdonald" <k2gkk at hotmail.com>
To: <milsurplus at mailman.qth.net>
Sent: Tuesday, August 09, 2005 10:22 AM
Subject: Receiver Antenna Matching (was: Re: [Milsurplus] R-388)


> The 4:1 ratio between 200 and 50 Ohms
> would be the same as that of the 300 to
> 75 Ohm TV baluns.  I would imagine that
> loss (if any) due to impedance mismatch
> would be miniscule.
>
> Mac, K2GKK/5
>
>
> ----Original Message Follows----
> From: C Whitaker <whitaker at pa.net>
> Reply-To: whitaker at ieee.org
> To: milsurplus at mailman.qth.net
> Subject: Re: [Milsurplus] R-388
> Date: Tue, 09 Aug 2005 11:14:10 -0400
>
> de WB2CPN               2005.08.09
>
> Re the antenna input impedance.  The standard
> appeared to be 200 Ohms.  On the BC-779 and
> their clones, and the RBP-2's, the Class A
> rhombic antennas used 4-wire transmission
> line to the receiver building, and a heavy
> 200 Ohm twin lead through the building to
> the receiver.
>
> 73  Clete
>
>
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