PROTECTED] Behalf Of
[EMAIL PROTECTED]
Sent: Thursday, March 09, 2006 11:43 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Receiver Tuning
I used the Sinadder when it first came out ... once my ear had
learned what to listen for, I quit using the it.
Neil
I used the Sinadder when it first came out ... once my ear had
learned what to listen for, I quit using the it.
Neil
Original Message
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Receiver Tuning
Date: Fri, 10 Mar 2006 02
Try item# 7598024261
Dan
On 3/9/06, Mike Perryman <[EMAIL PROTECTED]> wrote:
> Got an item number.. Hae Dong turned up nothing..
> mike
>
> -Original Message-
> From: Repeater-Builder@yahoogroups.com
> [mailto:[EMAIL PROTECTED] Behalf Of Dave VanHorn
> Sent: Thursday, March 09, 2006
Got an item number.. Hae Dong turned up nothing..
mike
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Dave VanHorn
Sent: Thursday, March 09, 2006 9:12 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Receiver Tuning
I checked the manual for my HP 334A Distortion
analyzer. The notch filter in that unit seems to be
capable of 80dB, and the bandwidth is quite narrow,
under 0.01%. This unit just removes the fundamental
and measures whatever is left.
I found several good articles and explanations of
SINAD measurem
At 3/6/2006 01:52 PM, you wrote:
>Wouldn't the SINAD be the distance between the 1kHz tone "Spike" and
>the noise "Grass"?
I assume you mean distance in amplitude.
Not quite. I think the noise would have to be summed over all frequencies,
including any harmonics of the 1 kHz that get generated
I'd think it might, but the AC voltmeter is measuring
the average (or RMS-calibrated) signal that remains
after the 1kHz tone has been removed. I suppose it
only has to be attenuated by at least 12dB (probably
more) so it doesn't contribute to the rest of the
signal. But if the 1kHz tone level is m
Wouldn't the SINAD be the distance between the 1kHz tone "Spike" and
the noise "Grass"?
On 3/6/06, Bob Dengler <[EMAIL PROTECTED]> wrote:
> At 3/6/2006 09:38 AM, you wrote:
>
> >Ok, I wasn't thinking in this direction before, but I do have an audio
> >band spectrum analyzer handy.
> >
> >Question
At 3/6/2006 09:38 AM, you wrote:
>Ok, I wasn't thinking in this direction before, but I do have an audio
>band spectrum analyzer handy.
>
>Question is, how can I translate this to a Sinad measurement?
I've been trying to figure this out too, as I've been working on an audio
spectrum analyzer pro
I recall reading somewhere that the SINAD measurement
is the residual signal after the 1kHz tone has been
filtered out. Assuming you have a full-quieting input
signal with 3kHz deviation and you've notched that
out, there snould be nothing left to measure. As the
signal gets noisier, the harmonics
Hello to the list. A very good and super inexpensive Sinad meter can be
an old Heathkit audio distortion meter. Any distortion meter will work,
but the old Heathkit units are around and are super cheap. Simply
connect across the loudspeaker and with a strong signal into the radio
to be teste
I'm willing to guess that if you built one, someone here on this list
could help you calibrate it against their service monitor.
Chuck
WB2EDV
>
>I wouldn't mind building a sinadder, but I don't know how I'd
>calibrate it.
>
>
>
>
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