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MaxPro I based portable unit

 
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MaxPro I based portable unit
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cliffyk
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Joined: 28 Sep 2005
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Location: 87.9 to 107.9
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Post MaxPro I based portable unit Reply with quote
I purchased a MaxPro I and SE3+ a month or so ago with the intention of putting together a "station-in-a-bag" portable studio/transmitter, got it done today. Thought some of you might be interested ion seeing the final product...

Here's a photo of the whole rig;



(I'm using a Behringer UB802 mixer, an MXL 990 microphone, and a real cheap [$30 "reconditioned" from eBay] RCA 5-disc CD player)

Here's a closeup of the rack bag (that's a Behringer MDX-1400 compressor/limiter and the MaxPro and SE3+ in a custom enclosure);



and, a look inside the transmitter enclosure...



I am very pleased with the MaxPro I/SE3+ combination; I did have to modifiy the SE3 to provide 4V output (as suggested in the manual) to get 100% modulation while keeping the 19KHz pilot tome around 7KHz deviation (actually I have to run the pilot a bit hot (10KHz deviation) to get the SE3+ to drive the exciter to 100% without excessive audio clipping in the encoder).

However, the final result sounds GREAT, I can get a solid 2-3 mile range (with full quieting in stereo) with 15V into the MaxPro and a slim-jim hanging in a tree 20' or so off the ground. I'm sure I'd get 6-7 miles easy with a Comet on a 50' mast. Next thing to do is make up some twin-lead slim-jims in a variety of wavelengths--stuff those and a throwing rope in the bag and I'll be set to travel.

The whole thing draws less than 2A at 120VAC, a small inverter and a deep cycle battery will run it for 8 hours easily, although mains power is available almost everywhere in one way or another.

I LIKE IT!!!

(Have Modulation - Will Travel)

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-cliff knight-
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Mon Oct 17, 2005 1:52 am View user's profile Send private message Visit poster's website
pcs
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Joined: 18 Jan 2002
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Location: Radio Land

Post Reply with quote
Applause

Kudos to you, superbly done!
This is a really sweet and good looking setup!

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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
Mon Oct 17, 2005 2:12 am View user's profile Send private message Visit poster's website
cliffyk
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Joined: 28 Sep 2005
Posts: 43
Location: 87.9 to 107.9
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Post Reply with quote
I could not have done it without your producing the MaxPro and SE3--both excellent products, reasonably priced.

I'm going to play with this for a while then sell it to a local LPFM license holder or on eBay--my next version will use the MaxPro III and Digi-log...

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-cliff knight-
My Miata
Mon Oct 17, 2005 3:08 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 think its better to hold on a bit for
MAX PRO 4+, which will be a MAX PRO I on
steroids and will be available in KIT form as well.

And perhaps SE4+, an improved version of
SE4. They'll be controllable via same LCD
module for easy integration.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Oct 17, 2005 3:47 am View user's profile Send private message Visit poster's website
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