[Lowfer] [part15] Bench testing was a huge disappointment

[Andy - KU4XR]

 Yes the XTAL is supposed to be a 28 MHz fundamental. At least that is
what the spec sheet on it says.  And I did put a trimmer in series
with the XTAL, knowing that I would need to do just that.

Thanks Mike for the info. That's probably why I was seeing 3, and 4
waveforms at a time on the scope screen, each one offset in time from
the other. That makes sense now.

Capacitor changing is the next " fix what I messed up " chore. I will
start on that one maybe tomorrow evening.  Gotta get in bed for now.

73 guys, and have a restful night.


Andy - KU4XR - EM75xr - Friendsville, TN. USA
LOWfer Beacon " XR " @ 185.29875 KHz ( QRSS-60 )
Coordinates:  N:  35º 43' 54" - W:  84º 3' 16"
http://www.myspace.com/beaconxr
http://webpages.charter.net/ku4xr/


--- On Thu, 3/11/10, Charlie , W5COV <cvest at cox.net> wrote:

> From: Charlie , W5COV <cvest at cox.net>
> Subject: Re: [Lowfer] [part15] Bench testing was a huge disappointment
> To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands" <lowfer at mailman.qth.net>
> Date: Thursday, March 11, 2010, 11:28 PM
> Sounds like you have located the
> first problem . You could always put a trimmer in place of
> the fixed capacitor , which is probably a good idea anyway ,
> given that your 28 MHz. on board oscillator will need to be
> right on frequency also .
> 
> The crystal is a fundamental isn't it rather than a 3rd
> overtone ?
> 
> Charlie
> ______________________________________________________________
> Lowfer mailing list
> Home: http://mailman.qth.net/mailman/listinfo/lowfer
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Lowfer at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>