MAx pro 4 - small output power

NEGZI · Post by **NEGZI** » Sun Oct 08, 2006 11:44 am

Hi there,
I have problem with maxpro 4, when I connect it to power supply, antena and signal source maxpro 4 gives only very little output power to antena, I think it is about 0,1 w. The range of transmitting is very low. I tryed to switch maxpro4 to 1W, 4W, Automatic but output power it is the same. I have power supply winth Amp meter and it hows that MaxPro4 is taking only 200mA / 13,8V all time constantly with 1W, 4W or Automatic setting. I have SWR metter combined with Watt metter, its from 0-200Mhz, smallest range 5W, but it Shows nothig(reflected SWR or WATT-5W range). The red diode signalizing bad SWR on the board of maxpro4 is not lighting. I tryed various types of antenna, I used have antenna matcher /not for this band, only for try/ , nothing helps. Do you have any idea, please?

NEGZI · Post by **NEGZI** » Sun Oct 08, 2006 11:56 am

It´s me again, I forget to say, that the power supply is strong enough, it can give 1,5 AMp for 13.8V.

pulsecork · Post by **pulsecork** » Sun Oct 08, 2006 10:04 pm

NEGZI wrote:It´s me again, I forget to say, that the power supply is strong enough, it can give 1,5 AMp for 13.8V.

did you try to ajust the ourput coiles thsy should be 2 of them try to ajust the left 1 a smallbit and see wat result u get..

NEGZI · Post by **NEGZI** » Mon Oct 09, 2006 6:26 pm

What coil - do you mean coil L3 and L4? There are 4 of them. Do you talk really about MaxPro4?

Post by **pcs** » Mon Oct 09, 2006 7:30 pm

NEGZI wrote:It´s me again, I forget to say, that the power supply is strong enough, it can give 1,5 AMp for 13.8V.

This is inadequate. MAX PRO 4 needs 15V (which is what we recommend) to reach full power.
Also, 2-3A PSU is recommended.

Post by **pcs** » Mon Oct 09, 2006 7:32 pm

The LED is supposed to be ON and that is ok as well.

Put jumper to the A position.

What's your LCD power setting?

pulsecork · Post by **pulsecork** » Tue Oct 10, 2006 12:19 pm

NEGZI wrote:What coil - do you mean coil L3 and L4? There are 4 of them. Do you talk really about MaxPro4?

right as mark said the transmitter needs 15 volts to operat at maximum power if you have a vaireable powersuply set it 2 15 volts also check you output settings on the transmitter itself via the lcd display... if all fails get back to me

franko pulsefm 95.5 ireland

www.pulsefmcork.tk
..

NEGZI · Post by **NEGZI** » Wed Oct 11, 2006 1:58 pm

OK, I set up voltage to 15V, and switch to automatic to control via Led display and I try to incrase output. It´s the same. Maxpro4 is taking about 200mA from power supply (all time the same - on 1/4 of full power, 1/2 of full power or full power) . I have big adjustable power supply, it can give about 2,5A per 15V. And the red diode near the audio input is not lighting. The output power is stable very low, about 0,1Watts all the time.

Post by **pcs** » Wed Oct 11, 2006 2:59 pm

Ok, I have some ideas.

Can you email me the photo of the board? Top side.

Use sales @ and our domain name

Marko

NEGZI · Post by **NEGZI** » Thu Oct 12, 2006 3:31 pm

I sent you a photo of a board as yoz wanted, dowes it arrive?

Post by **pcs** » Thu Oct 12, 2006 3:57 pm

I just answered your email.

NEGZI · Post by **NEGZI** » Thu Oct 12, 2006 6:26 pm

Thank you for your hint, now is everythihg workyng perfectly.

mhlse · Post by **mhlse** » Thu Nov 30, 2006 10:29 pm

I have the same problem

help please....

mathias

PCS-Electronics