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Re: LF: T/A April 2

To: [email protected]
Subject: Re: LF: T/A April 2
From: "Laurence KL1X" <[email protected]>
Date: Sun, 02 Apr 2006 17:04:55 -0800
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Joe - on 137Khz does your sensitivity improve with the IPO enabled on the 817...? its very deaf without a lot of drive but with the L400b eprobe it shoves enough signal - without it and on my loop arrays I needed something like 20dB gain to get things "hot". I agree on the modification!
Laurence KL1X in 5
okie em26br

from the manual -
"IPO (Intercept Point Optimization) - Bypasses RX Preamp on HF/50 MHz for improved performance during strong-signal conditions."

From: Joe Craig <[email protected]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: LF: T/A April 2
Date: Sun, 2 Apr 2006 21:49:00 -0230 (NDT)

Roelof and group,

I was using an ft-817 with the miniwhip and was quite amazed that
the LF TX could be heard at 20km.  I will try the attenuator between the
rig and the miniwhip next time to see if the intermod is from the RX.
Thanks fort the suggestion.

The ft817 is very deaf below 0.5 MHz because of the small inductive
reactances in the front end and mixer xfmr I believe, but modifying
it would be awkward because of its size.


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