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LF: Re: LF receivers

To: [email protected]
Subject: LF: Re: LF receivers
From: "Talbot Andrew" <[email protected]>
Date: Fri, 19 May 2000 08:52:26 +0100
Reply-to: [email protected]
Sender: <[email protected]>
Marco et al  ..

I feel cheated - everyone else seems to have 1 Hz steps   :-(
By IF passband tuning, do you mean the use of the 1kHz and 300 Hz
filters on SSB ?

For a time before getting an IC746 transceiver, I used a homebrew LF to
HF SSB transmitter exciter made by using the Local Oscillator and BFO
outputs from the RA1792,  then mixing in the reverse direction making
use of identical 455 and 40.455MHz filters cannibalised from a scrap Rx.

Andy  G4JNT

From:   M. Bruno[SMTP:[email protected]]
Reply To:       [email protected]
Sent:   2000-05-18 21:20
To:     [email protected]
Subject: Re: LF: Re: LF receivers
Racal 1792.

- 1 Hz tuning step
- high stability frequency reference, and all the synthesizers derived
from the
same 1 MHz signal
- synthesized BFO
- good AGC, excludible
- good dynamic (abt 102 dB 3rd order IMD at 14 MHz, never measured at
137 kHz)
- ample choice of filters
- IF pass band tuning
- no bells-and-whistles
- easy to repair and/or modify

[I'm not working for Racal, of course ...]

73, Marco IK1ODO

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