Hi Alberto it is quite interesting to continue that test with no attenuator
but the shells of the coax plugs connected together. I would guess with the
gear you have the resultant would be at least 120dB down........but this is
not the case for all signal generators! The result is usually particularly
poor with "video" generators, and often laughable with function generators.
This is were many LFers get confused calibrating receive equipment.
Alan
G3NYK
----- Original Message -----
From: "Alberto di Bene" <dib...@usa.net>
To: <time-nuts@febo.com>
Sent: Wednesday, January 08, 2014 8:50 PM
Subject: Re: [time-nuts] OT - Old Hatfield 2105 Step attenuator specs
On 1/6/2014 2:13 PM, Giuseppe Marullo wrote:
/I would like to know the specs for this attenuator, especially the
maximum frequency, if any good folk has a ballpark idea...
I was not able to locate any info about it./
I too have one, bought cheaply a couple of years ago on eBay. I tested its
accuracy
with a calibrated RF generator and a Selective Voltmeter, both from W&G,
at a frequency of approximately 10 MHz.
Up to roughly 70 - 75 dB attenuation, it is reasonably accurate. Beyond
that
value, the internal leakages dominates, and you can forget to have an
attenuation
of 100 dB, when you set it to the maximum...
73 Alberto I2PHD
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
---
This email is free from viruses and malware because avast! Antivirus protection
is active.
http://www.avast.com
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
