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Veronica 5WTX VCO unstability

 
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Veronica 5WTX VCO unstability
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Yoda
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Joined: 03 Dec 2003
Posts: 20
Location: The swamps of Dagobah

Post Veronica 5WTX VCO unstability Reply with quote
Hi, I have a Veronica 5WTX (5watt FM Transmitter) tuned to 106.2MHz. For some reason every time I power it up the output frequency drifts just a tiny little bit and I have to adjust the VCO trimmer nearly every time. After about 5 minutes or so it seems to be stable.

I have fitted a better heatsink, small fan with thermal speed controller in order to keep the temperature of the main output transistor stable.

Can anyone shed any light on this?? Has anyone had the same problem with this TX or a similar one???

<img border="0" src="http://www.dreamtechnologies.co.uk/other/veronica_5wtx.jpg" width="320" height="240">
I would love a MAX PRO I with LCD but just can't afford it at the moment....


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I have removed my e-mail address due to spam through this forum!!! please now use:
simon (at) dreamtechnologies (dot) co (dot) uk

May the force be with you.

http://www.radiorave.co.uk/
Thu Dec 04, 2003 11:38 am View user's profile Send private message Visit poster's website
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
I'll give you a bit of discount, when you're ready to upgrade to
MAX PRO I. You'll love our PLL no-drift unit with LCD display.

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Best regards,
Marko - PCS Electronics
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Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Sun Apr 04, 2004 2:56 pm View user's profile Send private message Visit poster's website
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