[1000mp] IC-746 PRO A/B Test Results

Mon, 30 Jun 2003 14:11:42 -0500

I listened a bit this weekend on my IC-756Pro II to the CW part of Field
Day. I was pleasantly surprised to find how sharp the DSP CW filters were
and how well they "deleted" adjacent strong signals. The comparison was only
one that deserves to be classed as 'anecdotal', but it was sufficiently
impressive for me to think I may try to use the Pro II in some contest this
Autumn or on the low bands when the ground freezes here at the 45th
Parallel.

Tod, K�TO

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of CRLL
Sent: Sunday, June 29, 2003 9:13 PM
To: [email protected]
Subject: Re: [1000mp] IC-746 PRO A/B Test Results

Not to turn this into the Icom site but a) thanks Earl, very interesting,
keep us updated and b) this rig was certainly appealing to me until I saw
the transmitter 'numbers'.... I don't remember for sure for the 3rd order
products we're around (only) 22dB down.... totally unacceptable for a
'modern' HF rig.

my 2 cents...

Jason, ve7ag
----- Original Message -----
From: <[email protected]>
To: <[email protected]>; <[email protected]>;
<[email protected]>; <[email protected]>
Sent: Sunday, June 29, 2003 2:14 PM
Subject: [1000mp] IC-746 PRO A/B Test Results

> A local ham loaned me his new Icom IC-746 PRO for the weekend for the A/B
> tests. The other Icom transceivers I've tested (IC-775DSP and IC756)
> ranked low on the list, therfore I wasn't expecting much from the 746
> PRO.  Much to my surprise, the receiver does an extremely good job of
> digging weak signals out of the noise on both 160m and 10m.
>
> It was an extremely close race and I spent the good part of two days and
> one night before making a decision:
>
> The IC-746 PRO is now #1 on the list!
>
> The receiver performed best on the weak test signals with its controls
> set as follows:
>
> Mode: CW
> DSP bandwidth: 50 Hz
> Preamp #2 on
>
> The controls on the FT-1000MP comparison receiver were set as follows:
>
> Mode: CW
> Xtal filter BW: 250/125 Hz
> DSP BW: 60 Hz
> Preamp: Tuned
>
> The 746 PRO's NR made no difference whether it was on or off at narrow
> BWs.  At wide BW's (SSB), it worked quite well.  These same results are
> true on the only three receivers that included DSP NR (the others are the
> Orion and FT-1000MP), so perhaps this is the norm for NR effectivity when
> using narrow BWs.
>
> The IC-746 PRO IMDDR3 and BDR test results from the ARRL lab are not as
> good as a number of receivers they've tested, but my tests are done when
> there are no nearby strong signals on the band.  The sole purpose of my
> tests is to determine how well a receiver can dig weak CW signals from
> the noise.
>
> Within the nexr two weeks I'll be A/Bing an Icom IC-756 PRO II.
>
>
> Here is the updated list of receivers checked so far at K6SE, in order
> from best to worst:
>
>  1) Icom IC-746 PRO
>  2) Yaesu FT-1000MP (with INRAD mod)
>  2) Elecraft K2 (tied for 2nd place)
>  2) Yaesu FT-1000D
>  5) Kenwood TS-830S
>  5) Kenwood TS-870S (tied with the TS-830S)
>  7) Yaesu FT-1000MP (without the INRAD mod)
>  8) Yaesu FT-757
>  9) Icom IC-775DSP
> 10) Ten-Tec Omni VI+
> 11) Icom IC-756
> 12) Ten-Tec Orion
>
> As more radios are A/B tested, I'll update the list.
>
> 73, de Earl, K6SE
>
> --- StripMime Report -- processed MIME parts ---
> multipart/alternative
>   text/plain (text body -- kept)
>   text/html
> The reason this message is shown is because the post was in HTML
> or had an attachment.  Attachments are not allowed.  To learn how
> to post in Plain-Text go to: http://www.expita.com/nomime.html  ---
> _______________________________________________
> List Moderator: Richard Lubash N1VXW
> 1000mp mailing list
> [email protected]
> To Change Options or Unsubscribe:
> http://mailman.qth.net/mailman/listinfo/1000mp
>

_______________________________________________
List Moderator: Richard Lubash N1VXW
1000mp mailing list
[email protected]
To Change Options or Unsubscribe:
http://mailman.qth.net/mailman/listinfo/1000mp