[TenTec] IC-7800 Expanded Test Report

[NJ0IP]

Mario,

I would add to the list of DSP's benefits "finally enough filters".
In the past, no rig had enough slots to put all the crystal filters I
wanted.
Now with DSP, the rigs have enough filters.

73
Rick

-----Original Message-----
From: tentec-bounces at contesting.com [mailto:tentec-bounces at contesting.com]On
Behalf Of Marijan Miletic, S56A
Sent: Monday, July 19, 2004 2:14 AM
To: tentec at contesting.com
Subject: [TenTec] IC-7800 Expanded Test Report


W4ZV> With IF's above 30 MHz, we got General Coverage receivers at the
expense of very poor close-spaced IMD and BDR performance.

The unique DSP contribution to HF RX is smart auto-notch and noise
reduction, the rest is marketing!

IF above 15 MHz removes superhet images from HF working range!  Collins IF
goes even above 3 x 30 MHz.  W0IYH in QEX nicely explains cost/performance
trade-offs with narrow front-end crystal filters.  I am surprised that
purists are not buying more 200 $ crystal filters at the antenna input!?

73 de Maro, S56A, N1YU

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