Message	Date	From	Subject
227	2006-12-08 09:24:57	Hari G	Spectrumanalyzer 3356chip
Hi , I have tried duplicating the 3356 detector portion of the SA for a sweep plotter, but gain is less when i use a 470Ohmto GND as in the original circuit. If i usea 6k8 the gain is ok and iam getting the full range.The opamp is having 4k7 in feed back and to GND. Any ideas ? -- De Hari VU2GHB
233	2006-12-12 16:21:24	jr_dakota	Re: Spectrumanalyzer 3356chip
Do you have a problem getting an AD8307? I think the reas

Hi ,

I have tried duplicating the 3356 detector portion of the SA for a sweep plotter, but gain is less when i use a 470Ohmto GND as in the original circuit.

If i usea 6k8 the gain is ok and iam getting the full range.The opamp is having 4k7 in feed back and to GND. Any ideas ?
--
De Hari
VU2GHB