FT-990 noise floor

[Joe Pontek, K8JP]

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>Date:  Mon, 10 Jun 1996 08:54:00 -0400 
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>Content-Identifier:  FT990 high au... 
>From: "friedemann (f.) heyer" <heyer@nortel.ca>
>Message-ID:  <"25511 Mon Jun 10 08:54:21 1996"@bnr.ca> 
>To: yaesu@akorn.net
>Subject:  FT990 high audio noise 
>Sender: owner-yaesu@akorn.net
>Precedence: bulk
>
>Hi everybody, (I wonder If I ever come through with this message)
>
>I like the FT990 very much, the only thing I'm dissapointed about is the
>relatively loud audio noise which highers the noise floor of the transceiver
>specially on calm bands which is really a pitty because you can't work what
>you can't hear. So my question : Does anybody know if there is a possibility
>in a small design change to lower this noise. I read something that it comes
>out of the IF- not RF-stages so maybe one could use other transistors with
>lower noise or different bias currents (Arbeitspunkte ??? (sorry))
>Maybe there is a known workaround to lower the noise floor.
>
>(The use of the switched capacitor filter makes it even worse as it lowers
>the usable audio bandwith and understandibility)
>
>
>Thank you in advance and 73
>
>Friedemann, still DG9GM, hard practicing CW
>
Friedemann,

Your message came thru with no address or subject. Rather than try to 
decipher the address from the preamble, I'll note this to the reflector. 

I have an FT990 here and do not notice a high noise floor.  As a matter of 
fact, when the band is dead at my Indiana QTH, I check the antenna 
connections. This is one of the reasons I enjoy my FT990. Are you sure the 
noise is from the receiver and not from a source in the ham shack? I would 
be curious if others experience a high noise floor.

73, K8Joe"Palooka"

K8JP, K8JP/VA2, VP5/K8JP, VP5JP, ex-K8HKM
palooka@pyrotechnics.com

snail mail:
Joe Pontek, K8JP
P. O. Box 59573
Schaumburg, IL 60159-0573
(847) 885-8871 (home)
(847) 519-7420 (work)
(847) 619-3250 (FAX)
U.S.A.