I have one of these and set it to 8mA output for several years with no problem. I chose it based on the following:
From the K3EXREF manual Connect the external 10 MHz signal source to the 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. From Bodnar’s website: Both output signals are at 3.3V CMOS levels with 50 Ohms characteristic impedance. Their output drive levels can be adjusted. Output power level (measured at 10MHz, fundamental power channel): +13.3dBm, drive setting 32mA +12.7dBm, drive setting 24mA +11.4dBm, drive setting 16mA +7.7dBm, drive setting 8mA Joe, KO8V > On Feb 14, 2019, at 2:36 PM, Dave Van Wallaghen <[email protected]> wrote: > > Grant, > > I just bought one of those a few months ago. I don't have it in front of me, > but as I remember, the default output from the Bodnar unit was exactly in > range of what is required by the K3. I didn't have to change anything in the > setup to get it working correctly with my K3. > > HTH > > 73, > Dave W8FGU > > On 2/14/2019 1:35:59 PM, "Grant Youngman" <[email protected]> wrote: > >> To reduce the overall footprint of “stuff” around here, I’ve purchased a >> Bodnar GPS to replace a Trimble Thunderbolt, open frame power supply, and >> status display for use with my K3. >> >> Is there a recommended output level from the Bodnar for the K3? it seems >> the lowest level should work ok, but just checking in case I don’t >> understand something .. which is probably more likely than not. >> >> >> Grant NQ5T >> K3 #2091 KX3 #8342 >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [email protected] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
