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In Reply to: RE: My small collection of tuners... posted by J. S. Bach on January 11, 2015 at 15:38:31
stations. very little compression etc. So FM is a major source for us.
IT is IMO a very great pity that probably NONE of those tuners has a switchable AC mains input. Between 240V/50 hz and 120/60hz.
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
Follow Ups:
The Fisher tuner mentioned above is a fine tool to gage top quality vs less quality stations. Some FM stations were unlistenable on the Fisher, but were ok on my car radio.
They do need to be driven hard to get quiet, but their ability to cope with wide-band EMI and RFI, to either side of band II, without going into overload, is a big plus. And you have a valve line-level stage to boot.
Note that the sound quality we get from a given station will sometimes depend on the interaction of its transmitted frequency, the IF stage, and the EMI and RFI frequencies where you are receiving the signal.
I wrote about my experience of EMI / RFI with my valve 'tuna' a good while back.
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
The Fisher 6DJ8 RF amplifier tube provides reasonable sensitivity and is far from deaf. Typically my Fisher tuner receives high power FM stations with full quieting 30-40 miles away on flat terrain using an indoor rabbit ear antenna.
Of course a MOS-FET front-end will provide a higher signal to noise ratio for those 500-1000 watt college stations.
I like the Scott LT-112B with a nuvistor front-end as a compromise audio quality/long haul FM tuner. The Scott is fully discrete without op-amps and sounds good. Audio wise the modified Fisher can approach CD sound on the right FM station.
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