[ICOM] eHam 2720 Reviews

[Julio Peralta]

I noticed in my 2720 manual that the radio has the ability to change its
1st Lo frequency. According to the manual this may help reject
interference or image frequencies. Has anyone tried it?

Julio, W4HY

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net]
On Behalf Of Gary Pearce KN4AQ
Sent: Thursday, October 06, 2005 3:53 PM
To: ICOM Reflector
Subject: RE: [ICOM] eHam 2720 Reviews

At 10:36 PM 10/2/2005, Mac, K2GKK/5 wrote:
>If you want .25 uV sensitivity over broad band,
>you   WILL   get intermod.  Wideband coverage
>seems to be what  MOST  buyers want. ...

>Yayhoo and Kenmore are all the same.
>
>Mac, K2GKK/5

They are not all the same.

The Icom 2410 (circa 1995) was particularly good on intermod.  The
Kenwood 
733 was pretty bad.  Standard's C5900 was very immune.

Of today's radios, Yaesu's 8800/8900, based on technology from the
Standard 
5900, is also a good performer.

The idea that a wide-band receiver must suffer terrible intermod is a 
myth.  I wouldn't make a repeater receiver out of them - sure you'll do 
better with a good receiver behind a tight filter.  But Icom could have 
done better with the 2720.

The 2720 does have some nice, unique features.  If the intermod you get
is 
mostly from pagers, a PAR notch filter should help a lot.  It goes in
the 
antenna line, and notches a couple of common pager channels while
letting 
the rest of the spectrum through.

73,
Gary KN4AQ

________________________________________________________________________
__
        Gary Pearce KN4AQ        editor, SERA Repeater Journal
        Cary, NC                 www.sera.org
        919-380-9944             kn4aq at sera.org
        kn4aq at arrl.net
         AIM: KN4AQ Radio.  Yahoo: KN4AQ
         (send e-mail to be put on my "buddy list")


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