[TenTec] Orion Dynamic Range Specs

[Dan N7NMD]

*Drool*

Other than that, I'm speechless.

Has anybody compared this rig to other commercial-class (and military) 
rigs? I'd like to know where the Orion stands in the whole spectrum.



Ten-Tec Inc. Amateur Radio Sales wrote:

> At 11:27 AM 1/6/03 -1000, you wrote:
>
>> Hi,
>>
>> Have just noticed that the TT folks have now "updated" the
>> published specs on the important dynamic range numbers.
>> Now list at the Orion web site the following:
>>
>> "IP3: +25 dBm typical, 20-kHz spacing at BW=2.4 kHz, pre-amp off;
>> +24 dBm typical, 5-kHz spacing, BW=500 Hz, pre-amp off.
>>
>> IMD3 dynamic range: 101 dB typical, pre-amp off, 20-kHz and
>> 5-kHz spacing.
>>
>> IP2: +75 dBm typical."
>>
>> Note IMD3 number: 101 typical;  that is the best number I have
>> ever seen a manufacturer put down,  even as "just" a typical
>> for a commercial rig!!  This indicates that the front end,  analog
>> stages of the rig are as good,  or better than those in the famed
>> TT rcvr,  the RX-340.  The DSP stages by themselves,  down
>> at the last IF,  have a range of about 103 dB,  per Doug Smith;
>> so there is a typical "degradation" of only a couple dB by the
>> preceding analog,  wide open,  AGC free and AGC'd stages
>> (that is, to those stages following the operator selectable
>> roofing filter).
>
>
> Hi:
>
> You folks don't miss a trick, as some updated numbers
> were just put onto the web site this morning.
>
> Keep in mind those are 5 kHz spacing numbers - if comparing
> these to other radios, use the comparable spacing.  The ARRL
> started using 5 kHz and 20 kHz numbers in their Product
> Reviews with the TS2000 review in July 2001.
>
> Some subtle changes - and the changes reflected were
> done for theoretical vs. actual measurements.  When we
> originally posted the numbers several months ago, no
> Orion physically existed to be able to verify what we
> were claiming.  Now that we have a number of built units
> that have been thoroughly tested, we were able to verify
> our claimed numbers with actual units in the engineering
> lab.  It appears that the radio might actually exceed some
> of the earlier claimed specs we have published (!)
>
> We are hopeful to publish some meaningful additional
> numbers in the future, like 1 kHz spacing dynamic range
> and third order intercept numbers.  Doug Smith, Jack
> Burchfield and the rest of the lab have been running
> even more testing this week.
>
> >Note also that we are going to be able to  adjust the AGC
> >parameters!
> >This is really going to be quite a wonderful rcvr,  it appears!
>
> Yes - AGC is fully adjustable.  No more FAST, MED,
> SLOW, OFF only (though those choices are available too).
> Something like 1 million possible combinations for attack,
> hang and decay time.  This can also be written as a
> 'profile memory' to be kept for instant recall by the operator.
>
> Rigs are coming soon.
>
> Scott Robbins, W4PA
> Amateur Radio Product Manager
>
>
>
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