The spec's are in the K3EXREF manual I have dated August 2016,
Rev B. page 4
"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."
73,
Bob
K2TK ex KN2TKR (1956) & K2TKR
On 6/5/2018 3:31 PM, Grant Youngman wrote:
My Trimble Thunderbolt puts out +7 dBm. The Bodnar can be set for
+13-something down to +7.7 dBm. Sounds in the ballpark.
The Trimble hasn’t torched anything. I don’t recall seeing specs on maximum
input power for the K3 but I haven't looked at it for a while, have a short
memory, and they’re probably there somewhere in the paperwork …
Grant NQ5T
K3 #2091, KX3 #8342
Can the Bodnar be fed to the K3s directly bu jumper without attenuation? Just
verifying. Don't want to feed too high a signal and torch something. :)
______________________________________________________________
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]
