[TenTec] Frequency accuracy...
Jeff Griffin
kb2m at comcast.net
Wed Dec 29 12:48:14 EST 2004
I tried this with my Orion. I seem to be only 7 Hz off(high 15.000.07) at
15.000.00. Is this possible? Orion has beem warming up for about 6 hours.
One odd thing I can only tune to 10.0090.00 on 30m. I try to enter the freq
via the keypad and I get a 'frequency not supported error' I haven't tried
to tune WWV on 10 mc in quite awhile, I'm pretty sure I used to be able to
go there. Any ideas?
After typing this I just checked it again on 15 mc, I now get an 8 Hz
error. Shut Orion off, ate lunch, 40 minutes later turned on and let warm
up for 5 minutes, I'm now zero beating the WWV carrier at 15000.026. Not
bad...
73 Jeff kb2m
----- Original Message -----
From: "Martin AA6E" <msembx-aa6e at yahoo.com>
To: <tentec at contesting.com>
Sent: Wednesday, December 29, 2004 10:06 AM
Subject: Re: [TenTec] Frequency accuracy...
>A different method. Listen on 10 MHz in CW mode and
> press "spot". You can easily hear the beat between
> your spot tone and the WWV carrier to +/- 1 Hz. Right
> now, I get 9.999973 MHz, meaning that my TCXO must be
> 2.7 ppm high.
>
> I haven't bothered to dive in to tweak the TCXO. Is
> that an easy adjustment to find?
>
> In an "SDR", you might think that the master
> oscillator frequency could be tuned from the menu. In
> a more advanced world, the radio could adjust itself
> to a received standard. Very little hardware
> required.
>
> 73, Martin AA6E
More information about the TenTec
mailing list