Keyboard Shortcuts
ctrl + shift + ? :
Show all keyboard shortcuts
ctrl + g :
Navigate to a group
ctrl + shift + f :
Find
ctrl + / :
Quick actions
esc to dismiss
Likes
Search
[QRP-L] (no subject)
KD5NWA
We are in the process of backing up and punting instead. I've been advised to move the crystal frequency of SR-40 by 12KHz on the low or on the high side, to get away from some of the noise in the center of the receivers band.
toggle quoted message
Show quoted text
Not an easy job due to lack of crystals at those high frequencies, I found one 17 KHz low, too low for my taste. I'll be checking for something closer later when I get a break. Any guesses as to how low could I pull a 35.328 MHz crystal? 48KHz lower? I kept the names of the interested parties, and will keep you posted. At 01:03 PM 9/28/2005, Garey Barrell wrote:
Cecil - |
Tony Parks
Cecil,
toggle quoted message
Show quoted text
The crystal that is 17 kHz low would work well if you are meaning the crystal is 68 kHz low at its fundamental frequency. Seventeen kHz low even at its fundamental frequency would still probably be ok. ----- Original Message -----
From: "KD5NWA" <KD5NWA@...> To: <k4oah@...> Cc: <softrock40@...> Sent: Wednesday, September 28, 2005 1:51 PM Subject: [softrock40] Re: [QRP-L] (no subject) We are in the process of backing up and punting instead. I've been |
KD5NWA
It would only let me see 6.5 KHz on one side.
I'm going to try putting two crystals in parallel, and try to pull them so I can get at least 10 KHz on either side of the IF, the crystals are cheap enough. I'll get the ones that are close to the center of the IF and pull them down. I'll also buy one that is 68.8KHz lower than the 4X IF frequency, just in case. At 01:58 PM 9/28/2005, Tony Parks wrote: Cecil,Cecil Bayona KD5NWA www.qrpradio.com 'Never argue with an idiot. They drag you down to their level then beat you with experience.' |
to navigate to use esc to dismiss