Small correction below. On Wed, 08 Jan 2014 08:21:37 -0800, you wrote:
>If Howard is correct on the output level, it's a little low for the >K3EXREF's input. From the manual: > Quote >Connect the external 10 MHz signal source to the K3 rear panel REF. >connector. The 10 MHz source should have a signal level between +4 dBm >and +16 dBm, nominal. For square wave sources, 2VDC to 3.3VDC peak is >optimum. If the source is a 5V logic level, use a 50-ohm resistor in >series with the input. Caution: To avoid damage to the K3EXREF, do not >exceed these levels. Unquote > <This paragraph is not in the K3EXREF manual; it's just my comment. -mz> >Many K3EXREF users have Trimble Thunderbolt units. These work quite >well and have an output level of about 12.5 dBm, sine wave. >Thunderbolt units can be acquired surplus for $40 - $100 and are >readily available on eBay, etc. I'd recommend you buy one of the >later models, because these have an integrated 12V-input power supply. > >73, >matt W6NIA > >On Wed, 8 Jan 2014 10:00:46 -0600, you wrote: > >>This is an inquiry I sent to Elecraft, along with their response: >> >>Ive been considering adding the K3XREF to my K3. Can you tell me if the >>device listed in this link is a suitable 10MHz source? (Re: Navsync CW12-TIM >>GPS Timing Module. Price and technical details at the link:) >> >>http://www.semiconductorstore.com/cart/pc/viewPrd.asp?idproduct=41718 >> >>Thanks, >> >>Jon / KF5TFJ >>===== >>Jon, >> >>We have not tested that unit with the K3XREF. >>Looking at the specs, it's uses a square wave (most use a sign) and the >>output is a little higher output then 0dBM which most units use. >>I would recommended asking on our Elecraft reflector if anyone has used and >>tested it with the K3. >> >>Regards >>Howard K6IA >>===== >>So, has anyone used the CW12-TIM with K3EXREF? >>______________________________________________________________ >>Elecraft mailing list >>Home: http://mailman.qth.net/mailman/listinfo/elecraft >>Help: http://mailman.qth.net/mmfaq.htm >>Post: mailto:Elecraft@mailman.qth.net >> >>This list hosted by: http://www.qsl.net >>Please help support this email list: http://www.qsl.net/donate.html >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
