Prev: Benq FP737S LCD monitor backlight - won't go off (longish).
Next: Panasonic VP-5720A oscilloscope freezed
From: Adrian C on 14 Dec 2009 20:01
RV Guy wrote:
> Here you go ..
>
> http://picasaweb.google.co.uk/ian.westwood/ZX75?authkey=Gv1sRgCKar9YSSwYaviQE&feat=directlink

Thanks.

http://www.datasheetcatalog.org/datasheet/sanyo/ds_pdf_e/LC72130.pdf

Ah, should have seen it coming. These are the days of microcontroller
programmed everything and there is a CPU hidden somewhere (other side of
the PCB?) that sets up registers in the PLL. It's not bridging pins that
does the magic anymore. If there isn't a hidden method to make the step
switch changes(like some car radio models common between US/Euro have)
then it's kind of outa luck me fears.

:-(

--
Adrian C
From: hr(bob) hofmann on 14 Dec 2009 20:59
On Dec 14, 9:38 am, Mark Carver <mark.car...(a)invalid.invalid> wrote:
> A friend of mine has just bought himself, and imported here to the UK an
> American RV. It is fitted with a Concertone ZX75 car audio system.
>
> There's one problem with the FM radio tuner, it only tunes in 200kHz
> steps, 88.1, 88.3, 88.5 etc.
>
> In the UK we have stations every 100 kHz, for instance one station in
> our local area is on 98.2 MHz.
>
> Is there any modification (grounding a pin on one of the chips for
> instance) that will make the tuner tune in 100 kHz steps ?
>
> He has contacted Concertone's service dept, but they refuse to help,
> saying that it is for the US market only.
>
> TIA

I think the easiest thing to do is buy a European model that does the
correct tuning.
From: Colin Horsley on 15 Dec 2009 04:00

"Mark Carver" <mark.carver(a)invalid.invalid> wrote in message
news:7on4jrF3p7h7oU1(a)mid.individual.net...
|A friend of mine has just bought himself, and imported here to the UK an
| American RV. It is fitted with a Concertone ZX75 car audio system.
|
| There's one problem with the FM radio tuner, it only tunes in 200kHz
| steps, 88.1, 88.3, 88.5 etc.
|
| In the UK we have stations every 100 kHz, for instance one station in
| our local area is on 98.2 MHz.
|
| Is there any modification (grounding a pin on one of the chips for
| instance) that will make the tuner tune in 100 kHz steps ?
|
| He has contacted Concertone's service dept, but they refuse to help,
| saying that it is for the US market only.
|
| TIA

Look here:-
http://www.edl.co.nz/faq.php

and ask them about the PB1500 Band Expander.

"23. Can the PB1500 Band Expander receive both even and uneven Radio
Station ?
No you will only receive the Even Radio Band. the Band Expander shifts the
whole radio band 0.01Mhz so that it can tune the radio stations that it
could not previously receive. . . ..(top)

24. Does the PB1500 alter the AM Radio Stations ?
No unfortunately the AM is bypassed without change, it is to difficult to
shift the 10Khz steppings into the 9Khz steppings. . . ..(top)"



Colin




From: RV Guy on 15 Dec 2009 06:02
On Dec 15, 1:01 am, Adrian C <em...(a)here.invalid> wrote:
> RV Guy wrote:
> > Here you go ..
>
> >http://picasaweb.google.co.uk/ian.westwood/ZX75?authkey=Gv1sRgCKar9YS....
>
> Thanks.
>
> http://www.datasheetcatalog.org/datasheet/sanyo/ds_pdf_e/LC72130.pdf
>
>   Ah, should have seen it coming. These are the days of microcontroller
> programmed everything and there is a CPU hidden somewhere (other side of
> the PCB?) that sets up registers in the PLL. It's not bridging pins that
> does the magic anymore. If there isn't a hidden method to make the step
> switch changes(like some car radio models common between US/Euro have)
> then it's kind of outa luck me fears.
>
> :-(
>
> --
> Adrian C

Good Job Adrian. Thanks for figuring that out. Much appreciated.
From: RV Guy on 15 Dec 2009 06:07

>
> Look here:-http://www.edl.co.nz/faq.php
>
> and ask them about the PB1500 Band Expander.
>
>
>       Colin

THANK YOU COLIN!

I spent hours googling for something like this but came up with
nothing.

I called them (the guy answered 2300 hrs local time!!) and the PB1500
seems to do exactly what I need. I have ordered 2 as a mate of mine
has the same problem!

£37 each with postage. Should save a bit buying 2 off.

I declare this problem solved!

Cheers all,

Ian.


First  |  Prev  |  Next  |  Last
Pages: 1 2 3
Prev: Benq FP737S LCD monitor backlight - won't go off (longish).
Next: Panasonic VP-5720A oscilloscope freezed