Re: Sony ICF-S10MK2, ICF-38
Kevin Schanilec
If found one of 'em. Per:
http://www.fixup.net/talk/topic.asp?TOPIC_ID=116
the Ultralight S10MK2 has the CXA1019 chip, not the CXA1129 found in the SRF-39/49/59 et al.
Per:
http://www.electronicecircuits.com/electronic-circuits/cxa1019-fm-radio-circuit-diagram/
the CXA1019 appears to have a built-in audio amp but needs an external IF filter. On the other hand, the CXA1129 has filtering built in but needs an external audio amp, if memory serves?
Kevin S
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http://www.fixup.net/talk/topic.asp?TOPIC_ID=116
the Ultralight S10MK2 has the CXA1019 chip, not the CXA1129 found in the SRF-39/49/59 et al.
Per:
http://www.electronicecircuits.com/electronic-circuits/cxa1019-fm-radio-circuit-diagram/
the CXA1019 appears to have a built-in audio amp but needs an external IF filter. On the other hand, the CXA1129 has filtering built in but needs an external audio amp, if memory serves?
Kevin S
--- In ultralightdx@..., Marc Coevoet <sintsixtus@...> wrote:
Op 21-12-10 21:38, Richard Berler schreef:The SONY ICF-38 indeed does have a harder time re selectivity with theRichard,
locals during daytime patterns/power. Even so, I could usually hear
stations 20 KHz away from locals. The exceptions were stations
sandwiched between locals 30-40 KHz apart, and the 1550 KHz local made
it impossible to hear anything lurking underneath until about 1600 KHz.
No mixing products on the dial. Daytime sensitivity is good, better than
the Tecsun PL-310 and 390.
Can you open the Sony and tell us what (CXA) chip is inside?
And while open, how long is the ferrite bar?
And .. pictures ...
Marc
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