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Fm transmitters
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warden
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Joined: 18 Apr 2003
Posts: 4

Post Fm transmitters Reply with quote
Are there any fm transmitter circuits out there that do not require a trimmer cap? I have been to every local electronics shop in town, and no'one has them!

Thanks
Warden
Thu Apr 24, 2003 9:50 pm View user's profile Send private message
Speedster
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Post Reply with quote
hi warden,

just to test, you can substitue trimmer cap by one capacitance that is in the range of the trimmer, but who will not vary the emitter frequency...


Speedster
Fri Jul 18, 2003 8:12 pm
fmdream
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Joined: 27 Jul 2003
Posts: 3
Location: Croatia/Dalmatia/Zadar

Post Without trimer cap's YES! Reply with quote
You may build a fm exciter without any trimer capacitors! Most commercial exciters (up to 20 Watts) no need trimer. You can use a bgy33 or bgy133 from Philips (hibrid amplifier). Input for this device is 100~150mW output 0~20 Watts on 87.5~108mHz. It's very simple!
Sun Jul 27, 2003 10:16 pm View user's profile Send private message
StormiNorm
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Post TRUE THAT Reply with quote
When was the last time you Bought or was able to find a BGY133 AVAILABLE??
Mon Jul 28, 2003 1:16 am
fmdream
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Joined: 27 Jul 2003
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Location: Croatia/Dalmatia/Zadar

Post bgy 33 Reply with quote
I found bgy33 since 1997. on http://www.paradise-electronics.nl/nederlands/transistoren.html price in that time is about 80€ for one pices.
Check on the internet to find delaer's[/img]
Tue Jul 29, 2003 7:52 pm View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
This hybrid amp has not been produced for some time now,
its impossible to find it.

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Marko - PCS Electronics
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Turn your PC into a FM radio station!
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Wed Jul 30, 2003 1:03 pm View user's profile Send private message Visit poster's website
fmdream
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Joined: 27 Jul 2003
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Location: Croatia/Dalmatia/Zadar

Post Schematics Reply with quote
Open This link: http://www.*Ads not allowed*/modules.php?name=Downloads&d_op=getit&lid=24 to get technical manuals from PTEK Broadcast manufacturer. In this manual you will get the schematics of fm exciter and power amplifier without any trimer capacitors or hibrid module....
Wed Aug 20, 2003 5:08 pm View user's profile Send private message
marinbnm
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Joined: 23 Oct 2004
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Post Re: Schematics Reply with quote
fmdream wrote:
Open This link: http://www.*Ads not allowed*/modules.php?name=Downloads&d_op=getit&lid=24 to get technical manuals from PTEK Broadcast manufacturer. In this manual you will get the schematics of fm exciter and power amplifier without any trimer capacitors or hibrid module....


Why "ads not allowed", ha?????
Sat Oct 23, 2004 11:51 am View user's profile Send private message Visit poster's website
pcs
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Joined: 18 Jan 2002
Posts: 3063
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Post Reply with quote
Why not? Maybe you should read forum rules.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Sat Oct 23, 2004 1:32 pm View user's profile Send private message Visit poster's website
Mladen
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Joined: 06 Mar 2007
Posts: 1

Post Reply with quote
this topic is old, but if somebody need BGY 33, I have four (4) peaces, they are new and unused, price is 50€ / 1pcs.

petrusic@globalnet.hr
Tue Mar 06, 2007 5:48 pm View user's profile Send private message
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