The photomodel shows the final version combining all components necessary to make this a nifty gadget. BOM is approx. 99 CHF.

This is a combination of all insights we got in building Version 2 x GALI and Version 3 x GALI.

We tested the following assemblies (ENR @ 500 MHz) :

AMP 1	AMP 2	ATT [dB]	ENR [dB]
GVA-81+	GVA-81+	0	29.1
GVA-81+	GVA-81+	10	19.1
GVA-81+	GVA-81+	6+6	17.1
GVA-81+	GVA-81+	6+10	13.1
GVA-81+	GVA-81+	6+10+3	10.1

The graph below shows the comparison to an Ailtech S-4241 (10 MHz to 18 GHz, 15.5 dB ENR). We think : not to shabby at all.



With 2 x GVA-81+ and PAT-10 + PAT-6 the ENR value is : 12.0 ±0.5 dB.

And yes, we know that graphs end, where data becomes unflattering. Please believe me, my colleague can only measure up to approx. 1.7 GHz. THANK YOU HB9SCT !

As some Tester will switch the Noise Source ON and OFF, the Output matching must be very good, in both cases. In terms of ENR, we measured the following values :

FREQUENCY [MHz]	ENR [dB]
500	12.0 ±0.5
1000	12.0 ±0.5
2000	12.0 ±0.5
3000	12.0 ±0.5

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