I've used the HP 3586 for measuring AM carrier frequencies as well as my Tek
495P (both referenced to Rb) for higher frequencies such as air band.
Some carriers are dead nuts on while others are quite far off (at least to my
mind) although I've never found one outside of its required tolerance.
It seems possible to measure pretty accurately with these instruments, at least
on AM or CW signals, but not sure the best way for FM. I've played with the HP
53310A but haven't set it up for precise measurements yet, or really studied
what all it is capable of.
Peter
On 10/26/2012 11:10 PM, Orin Eman wrote:
Looks like they _might_ have been 30 _Hz_ out... I had to tune to 1188.97
to get a 1kHz beat in upper sideband mode a few minutes ago but they are
within 10Hz of where they are supposed to be now - according to my radio
anyway (I just checked the radio against WWV at 5MHz and it was less than
10Hz out).
Orin, KJ7HQ.
On Fri, Oct 26, 2012 at 7:41 PM, Bob Camp <[email protected]> wrote:
Hi
Not to mention attention from the guy who *should* be 3 channels over …
Bob
On Oct 26, 2012, at 10:31 PM, Peter Gottlieb <[email protected]> wrote:
It would attract a lot of attention from people not finding it at the
right place on the dial.
On 10/26/2012 10:09 PM, Max Robinson wrote:
The frequency of 1190 indicates an AM station. I assume you mean 30
Hz. An error of 30 KHz would attract a lot of attention from Charley.
Regards.
Max. K 4 O DS.
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----- Original Message ----- From: "Chuck Forsberg WA7KGX N2469R" <
[email protected]>
To: "Discussion of precise time and frequency measurement" <
[email protected]>
Sent: Friday, October 26, 2012 12:14 AM
Subject: Re: [time-nuts] WWVB New Modulation scheme...
I have my 3586b slaved to my Thunderbolt along with a
Flex-1500 radio, Racal-Dana counter, Advantest Spectrum
analyzer and Gigatronics signal generator.
You might be interested to know KEX 1190 in Portland
is about 30 kHz low. At least they aren't spewing
IBOC lately.
--
Chuck Forsberg WA7KGX N2469R [email protected] www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
Omen Technology Inc "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430
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