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quantum · 4th Nov 2005, 5:28 pm

The 0.01mf value cap connected to the grid of the first 6J5 seems rather high for a leaky grid detector - should it be 0.0001mf (100pf)? How is the selectivity - I'd imagine that with a long aerial you would have difficulty in separating the stations, unless you have an extra winding on the coil for the aerial and/or a small value cap in the aerial lead.

4th Nov 2005, 5:28 pm	#20
quantum Retired Dormant Member Join Date: Mar 2003 Location: Birmingham, West Midlands, UK. Posts: 785	Re: Home brew TRF The 0.01mf value cap connected to the grid of the first 6J5 seems rather high for a leaky grid detector - should it be 0.0001mf (100pf)? How is the selectivity - I'd imagine that with a long aerial you would have difficulty in separating the stations, unless you have an extra winding on the coil for the aerial and/or a small value cap in the aerial lead.