[TenTec] dual receive

[Kevin Purcell]

I really would have though the Jupiter would be better -- it probably  
is in real life with better preselection/LPF. The intercepts for the  
RX320 are not very impressive.

ARRL RX320 review:

Minimum discernible signal (Noise floor), 500 Hz filter Frequency
1.0 MHz -117 dBm
3.5 MHz -133 dBm
14 MHz -134 dBm
Blocking dynamic range, 500 Hz filter
3.5 MHz 111 dB*
14 MHz 109 dB*
Two-tone, third order IMD dynamic range, 500 Hz filter
3.5 MHz 84 dB*
14 MHz 82 dB*
Third-order intercept
3.5 MHz -7.4 dBm
14 MHz -10.7 dBm
Second-order intercept
-29 dBm

ARRL Jupiter review:

SSB/CW sensitivity, 3 kHz bandwidth, 10 dB S/N: 0.35 μV. Noise floor  
(MDS), 525 Hz bandwidth:
1.0 MHz −121 dBm
3.5 MHz −127 dBm
14 MHz −135 dBm
Blocking dynamic range: Not specified.
Blocking dynamic range, 525 Hz filter:
3.5 MHz 113 dB
14 MHz 123 dB*
Two-tone, third-order IMD dynamic range: Not specified.
Two-tone, third-order IMD dynamic range, 525 Hz filter:
3.5 MHz 87 dB
14 MHz 85 dB*
Third-order intercept: claimed +10 dBm.
3.5 MHz +11 dBm
14 MHz +7.3 dBm
Second-order intercept: Not specified.
Second-order intercept: +53.6 dBm.

* == Measurement was noise-limited at the value indicated.

On Oct 2, 2007, at 6:35 PM, Carl Moreschi wrote:

> The receiver is
> actually almost the same as the Jupiter receiver without the bells and
> whistles.
>
> 73,
>
> Carl Moreschi N4PY

--
Kevin Purcell
kevinpurcell at pobox.com