This is for general information in case someone else needs an inexpensive distribution amplifier for a frequency source. Just yesterday I received the following distribution amp that I purchased on ebay - http://tinyurl.com/bqalz . So far I have only completed some minimal testing, as I am in the process of moving my lab but satisfied myself that this would really do the job nicely. As you can see on the ebay ad it is made for HDTV. It has 3 inputs and each input has six outputs. The inputs can be DC or AC coupled. The testing I performed was at 10 MHz. I fed it with one of my rubidiums with about a 7.8 dBm signal. The output on each of the six output channels was about 7.3 dBm. This was the same regardless of the input used or the output measured or of any loading on the other outputs. It will be ideal to drive a bunch of test equipment simultaneously from the same source. I did not yet measure any input to output phase shift or output to output phase difference. Besides, as long as it is constant I do not care. The outputs are also not isolated, but for what I want it for that is OK as well. I intend to put an amplifier and a splitter on the rubidium so I can drive all three ports at once giving me 18 frequency correlated outputs. I am very pleased with the purchase. It is also small, another benefit. I did not see any increase in the noise floor as compared to the rubidium, nor did I see any extraneous spurious. The output, except for the minimal signal loss was essentially identical to the input. 73 - Mike
Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
