Pardon the stupid question, but where is the best place to locate low
pass filters? Closer to the antenna or the receiver?

I am finally setting up my base station and I need to know the best
location for my low pass filter.

Thanks,

Tod
N7JQW

On Thu, 16 Sep 2004 09:32:19 -0700, Tod Glenn
wrote:

Pardon the stupid question, but where is the best place to locate low
pass filters? Closer to the antenna or the receiver?

Hi Todd,

You want high pass filters for a receiver with the roll-off frequency
set at the lowest end of your listening range. This is usually the AM
band's top end to keep their power out of your receiver's front end.

Low pass filters are for transmitter outputs to reduce spurs and
harmonics (and should be as close to the source as possible).

73's
Richard Clark, KB7QHC

Between the audio output and the woofer.

"Tod Glenn" wrote in message
...
Pardon the stupid question, but where is the best place to locate low
pass filters? Closer to the antenna or the receiver?

The best place is at the output of the transmitter or linear amplifier.

In article ,
(K9SQG) wrote:

The best place is at the output of the transmitter or linear amplifier.

Thanks all who answered.

Tod

On Sat, 18 Sep 2004 19:24:31 -0700, Tod Glenn
wrote:

In article ,
(K9SQG) wrote:

The best place is at the output of the transmitter or linear amplifier.

Thanks all who answered.

Tod

When I've used a low-pass filter, I've simply attached it to the
output of the transceiver with a double male coax connector, so the
unwanted higher harmonics go directly into the filter, and then the
hopefully clean signal moves on to the antenna feedline.

bob
k5qwg