[TenTec] NB verses NR
Barry N1EU
barry.n1eu at gmail.com
Mon Dec 15 14:13:10 EST 2014
On Mon, Dec 15, 2014 at 1:53 PM, Rick - DJ0IP / NJ0IP <Rick at dj0ip.de> wrote:
>
>
> The problem with placing two filters directly in series is, you will drop
> about 6dB of gain, assuming they are narrow filters. This needs to be
> compensated for with a low gain, low distortion amp.
>
He's not doing that. He only has one of the two active at any given time,
SSB or CW. And besides, the IR roofing filter has a built in amplifier to
account for the loss.
Barry N1EU
>
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