[Yaesu] Re: Pin Diodes FT-990 and FT-990 HISS

[Stuart Rumley]

Robert~

If you like it the way it is then don't worry about.  This noise and hiss
subject is a bit esoteric and technical.  I has more to do with optimizing
the radio's architecture and less to do with actually operating the radio.
What I'm trying to point out is a good radio has the potential to be even
better.   If your happy, that's all that matters.

73s,
Stuart~
ki6qp



----- Original Message -----
From: "Robert C De Grippo" <kr4da@earthlink.net>
To: <yaesu@mailman.qth.net>
Sent: Tuesday, February 12, 2002 9:21 AM
Subject: Re: [Yaesu] Re: Pin Diodes FT-990 and FT-990 HISS


| I just tried this test and I have the HISS.
| I have never had a problem hearing or working a DX station and I don't
| understand the implications on recieving DX stations.
| I am not a TECH person like some of you but the REC works for me.
|
| I also purchased a Kenwood TS-570D a few months ago and I really haven't
even
| used it. But I tried this test. I cannot hear any HISS on the TS-570D.
|
| Does that mean that I should hear the DX better with the TS-570D?
| I need to play with these radios and try this with a DX station and see
which
| radio I hear better with.
|
| And do I really need to hear it better if I can work DX that anyone else
can
| hear. Maybe it's important on the LOW bands. But my 80 FULL wave loop
works them
| and
| hears them good enough for me.
|
| Boy this could really get carried away when you start discussing REAL
SPECS and
| performance of the radio as compared to everyday use.
| We all know what a great radio the FT 990 is, that's why I bought it.
|
| Stuart Rumley wrote:
| >
| > This hiss is a common problem with the Yaesu FT-990 and FT-1000.  For
this
| > radio it is the limiting factor on sensitivity excluding secondary
factors
| > such as local oscillator phase noise and intermodulation distortion from
| > adjacent high level signals.
| >
| >
| --
| Bob
|
| Middleburg Fl (South Jacksonville)
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