= HF8V = / = SP8WJT = / = SP0106RZ =
HF-17135
PROJECT: HF-17135
DESCRIPTION: Multiband receiver (broadcasting)
TYPE: PR-804
BRAND: ? (chinese production)
STATUS: u
PROJECT START DATE: near 2012
LOCALISATION:
DOCUMENTATION: B-8 page 38 (PCB drawings, measurnments)
TPD: TPD57135
BANDS: MF, SW1-SW6, VHF
FREQUENCY: HF: 5.5 - 29.9 MHz, VHF (not measured)
MODULATION: AM, WFM
SUPPLY VOLTAGE: 3V
SUPPLY CURRENT: 4.7 mA
I had some fun making this receiver working again. I remember well 1980's when shortwave bands full of broadcasting stations were fascinating place, but today there are very few signals comparing to these days... But I still like listerning from time to time. Especially our Chinese Comrades are well represented (I like their national stations more even if I don't understand chinese at all). Selectivity and image rejection of such kind of receivers are very bad of course, but remember Comrades that good operator can work even on very bad receivers while capitalistic operators working bad on very expensive receivers :)) That you can hear on amateur radio bands. More seriously speaking HF preselector like HF-2836 can help with image rejection little bit.
There is also another receiver on CXA1691 HF-17897 but this will be used for parts probably (or deep modification must be made).
Sources:
[1] CXA1691 datasheet
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