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Question about Max Pro I
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sgarringer
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Joined: 31 Oct 2007
Posts: 2

Post Question about Max Pro I Reply with quote
Hello, I have the Max Pro I FM transmitter. Recently, we had a storm blow throw, which took out the antenna feedline to the transmitter. As such, it was running for several hours without an antenna connected (or worse yet, antenna shorted to ground, the wire was pulled apart). I have repaired the damage, but now when connected to the antenna, the power output is very low. Checking the voltage on the Pro II module, it appears to read 0 volts. I am wondering if it is possible to have damaged the final transistor? If so, can you please let me know what type of replacement transistor (I assume its T3) to order? Thanks very much.

Shawn
Wed Oct 31, 2007 9:10 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
Yep, it is possible. The output transistor is 2SC1971.

On the other hand it may be time to upgrade to max pro 3+, especially
with halloween rebate:

http://www.pcs-electronics.com/phpBB2/viewtopic.php?p=8326#8326

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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
Thu Nov 01, 2007 12:24 am View user's profile Send private message Visit poster's website
sgarringer
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Joined: 31 Oct 2007
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Thats a really sweet offer, but I found a replacement transistor for $10 locally this morning. We're running this station on a shoe-string budget, and would like to add an amp (we don't even have a stereo encoder yet) hoping that by getting the greater coverage that 100w would offer we may be able to get an additional local sponsor or two.

Our real goal was eventually to go AM, but it doesn't appear thats going to be possible, with the cost of AM transmitters what they are... We'd have great soil for AM, too. Live in Iowa (Midwest USA) and are only about 1 or 2 km from a creek and about 5km from a rather large river...
Thu Nov 01, 2007 2:16 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
Santa might bring you something nice this year, wait and see.

E-mail me directly, we may have some old stereo encoder lying around.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Thu Nov 01, 2007 6:45 pm View user's profile Send private message Visit poster's website
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