I picked up an HP 8656B from the usual place and have been cleaning it
up... got around to testing the output which looks good on a cheap
frequency counter etc...
I'm wanting to use the 10 MHz output from my TBolt for the reference input
on the HP 8656B and my Elecraft K3. So I started digging ar
Hi Paul
where could I find the frequency of "our Loran" [the Californian Loran ]
I have an old HP3586 "radio receiver"
73
Alex
On 7/20/2015 1:50 PM, paul swed wrote:
The system came up at 9 am and has been working well the austrons and SRS
fs 700 are doing very well. Some static crashes and su
Hi
Before you *assume* the 3801 is the problem, check and see if the Loran signal
is
hopping around. Who knows what they might be doing on the transmit end ….
Exactly *how* you check the Loran other than finding somebody else on the list
… no idea.
Bob
> On Jul 20, 2015, at 4:50 PM, paul sw
Thanks for your report Paul, What is your QTH?
73,
Bill
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed
Sent: Monday, July 20, 2015 4:50 PM
To: Time-nuts
Subject: [time-nuts] LORAN on the air 89700 been a good day so far
The system came up
On 7/20/2015 8:12 AM, Charles Steinmetz wrote:
Rick wrote:
Base spreading resistance can be overcome
by using a sufficiently high source impedance
This sounds like the all-too-common noise figure fallacy (increasing
input impedance to get a lower NF). All this does is raise the source
impe
The system came up at 9 am and has been working well the austrons and SRS
fs 700 are doing very well. Some static crashes and such.
This test has however revealed something I did not want to know. The HP
z3801 seems to have a problem of jumping phase. So the trusty box is
finally showing its age.
On Sun, 19 Jul 2015 15:49:33 +0100
"Dr. David Kirkby (Kirkby Microwave Ltd)"
wrote:
> Does this seem viable, or have I overlooked something? I'm not looking to
> build a lab standard - just have a bit of fun.
This should work. At least I don't see a reason why it shouldn't.
You get the I/Q val
If the SRS stores the CALBYTES info in EEPROM, continuously updating it will
wear out the EEPROM in a relatively short time.
There were some proposals about interfacing the freq adjust up/down buttons in
the FEI Rb modules to steer the device... I calculated that the EEPROM would
be toast
Hi,
I have an HP 3581A and I need to replace the top right hand frequency
pot.
My unit has a dual pot with a concentric shaft.
The only manual I have shows a single pot.
If anyone has a manual that shows the dual pot could you let me know the
values of the pots?
Thanks,
Corby Dawson
Hi David I live a little to the North of you and I have used R4 a number of
years ago...In fact I spotted and reported to NPL "breathing" or hunting on
the output compared to my two Austron 1250As the period was about 100secs. I
was emailled a couple of months later to say the exciter had faile
Rick wrote:
Base spreading resistance can be overcome
by using a sufficiently high source impedance
This sounds like the all-too-common noise figure fallacy (increasing
input impedance to get a lower NF). All this does is raise the
source impedance's contribution to the total noise -- it do
Regards
Paul.
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Hi
They may be designed to be as close as you can get to a 50 ohm splitter. The
sum port is where that is most likely to fall apart.
Bob
> On Jul 19, 2015, at 10:51 AM, Dr. David Kirkby (Kirkby Microwave Ltd)
> wrote:
>
> On 19 July 2015 at 13:39, Bob Camp wrote:
>
>> Hi
>>
>> One thing wo
I had a plan to construct an "off-air" frequency 10 MHz standard based on
the 198 kHz from the Droitwich radio 4 transmitter, just by hooking up
various bits of test kit and writing a computer program to control the
equipment via GPIB. No electronics, apart from an antenna, would need to be
built a
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