On Wed, 17 Sep 1997 07:26:58 -0400 firstname.lastname@example.org (Morin Michel)
> I am a new Tentec user and have a couple of questions about
>the Delta II.
>Is the noise floor of the receiver as good as Jap rigs or better? When
>compared to the Omni VI, how does the Delta II rate as a receiver? How
>would you rate the Delta II in general? Thanks for any info.
>73 de VE2CJW, Michel Morin.
You got me thinking about this, and I knew I had some numbers stored
Here they are, direct from the "QST" product reviews. Threw in my IC-765
just for the fun of it: (I'm tabbing the columns, so hope your readers
work on this)
Parameter IC-765 IC765
II Omni-VI Pre-On Pre-Off
---------------- ------- --------- ------- --------
Noise Floor (dB) 3.5 MHz -134
-133.5 -142 -135
14 " -130 -136 -142 -135
Blocking Dyn 3.5 MHz 109
NL* 123.5 148 152
Range (dBm) 14 " 104 128 146 151.5
3rd Order 3.5 MHz 89 95 98
Intermod (dB) 14 " 88 100 96
3rd Order 3.5 MHz -0.5 9 5
Intercept (dBm) 14 " 2 14 2
* NL = noise limited
Note: If you think you know what these numbers mean, do yourself a favor
and read the information in the handbook or in other places provided by
the ARRL labs. It always amazes me how much more I pick up each time I
re-read it. (Hmm, maybe Alsheimers is near?!) If you're mystified by
these numbers, read the same information - these figures will tell you a
lot about a receiver's performance in strong adjacent signal conditions.
Note also that choice of filters can make a difference on the results.
Hope this is useful to someone. I chose the IC-765 as a comparison point
only because I own one and am CONSTANTLY comparing it to the Omni-VI
trying to decide whether a switch is worth it...
73, Duane AC5AA (losing my "lurker" status at this rate!)
Duane A. Calvin, AC5AA
ac5aa@Juno.com -or- email@example.com
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