Hi,
does anyone know this amplifier from the bay?
There it is described with 1W to 4000 MHz.
It should be a TGP3M9103 installed. I measured the amplifier with 29dbm at 1000 MHz.
At 2400 MHz I could measure almost no output power.
On the PCB a TQP7M9103 is installed. The data sheet shows the amplifier up to 4GHz. However, the specified parameters are only shown up to 1000 MHz.
Has anyone had similar experiences?
Hello,
Sorry to read about your bad experience.
If you are looking for a low power PA maybe this can be an alternative, in case that you are willing to solder a little bit.
The board is made very easy, however a solid ground between the module and board is required. I did use 35u copper foil under both.
Gain of the module is 30dB with an output of over 3 Watt at 2.4GHz.
And the cost is ridiculously low : 9 Dollar on eBay !!
I added a 6dB attenuator at the input to avoid oversteering. My use is as a driver for a (Andrews) MRF21050 module.
73 de Cor
Hi DO1CTL - I bought a similar 1 W amplifier and took this gain measurement of the unmodified amplifier. For 2400 MHz use it needs serious modifications!!
73 OZ2OE
PA0P nice design..but in the datasheet from Freescale there is no pin description..
PA0P nice design..but in the datasheet from Freescale there is no pin description..
See on page 4 Package Dimensions.................
Only 4 pins, 1 input, 2 and 3 VCC and 4 output
You cannot miss
thanks..perfect..
9 Dollar on eBay !!
Hi, do you have a part numer or seller?
The only one i found, dont ship to Germany.
interesting PA 3 WATT I am preparing I wanted to know from Cor PA0P if possible have the schematic I wanted to do it and how much power should the module insert?
73 de iw5bsf Roberto
For 2400 MHz use it needs serious modifications!!
I've done a look in the datasheet, think i have to modify the value of the input and output C's.
Hi, do you have a part numer or seller?
The only one i found, dont ship to Germany.
If I do check at eBAY.com there are currently 11 suppliers, no delivery restrictions.
you can choose from new or used. My supplier was from HongKong.
Hi, do you have a part numer or seller?
The only one i found, dont ship to Germany.
link ship germany
interesting PA 3 WATT I am preparing I wanted to know from Cor PA0P if possible have the schematic I wanted to do it and how much power should the module insert?
73 de iw5bsf Roberto
Hi Roberto,
Schematic is very simple. As per datasheet do not drive more than 5 mW at the input (50 ohm), put 12 to 28 Volts on pins 2 and 3 depending on the output you want and output is at pin 4 (50 Ohm).
See the photograph for the decoupling of the powerlines. Take several values of capacitors, I did 22pf, 5000pf and 100nf. Any series inductor from the junkbox will do.
Take attention to get a good ground connection, remember it is 2.4GHz...
Hi Roberto,
Schematic is very simple. As per datasheet do not drive more than 5 mW at the input (50 ohm), put 12 to 28 Volts on pins 2 and 3 depending on the output you want and output is at pin 4 (50 Ohm).
See the photograph for the decoupling of the powerlines. Take several values of capacitors, I did 22pf, 5000pf and 100nf. Any series inductor from the junkbox will do.
Take attention to get a good ground connection, remember it is 2.4GHz...
thank
Roberto
Hi Roberto,
Schematic is very simple. As per datasheet do not drive more than 5 mW at the input (50 ohm), put 12 to 28 Volts on pins 2 and 3 depending on the output you want and output is at pin 4 (50 Ohm).
See the photograph for the decoupling of the powerlines. Take several values of capacitors, I did 22pf, 5000pf and 100nf. Any series inductor from the junkbox will do.
Take attention to get a good ground connection, remember it is 2.4GHz...
ok have you tried in ssb how it works?
Roberto,
The module is a class A configuration with low IMD, no worries for SSB though.
thank you when I modified LNB OCTAGON with external reference. I use a 27 mhz crystal oscillator ex PH with a very stable low noise -149dbc made at home, now I have to start thinking about the transmission
I've done a look in the datasheet, think i have to modify the value of the input and output C's.
chances for success are low, I did run just by accident into the following article about the same problem:
https://groups.io/g/UKMicrowaves/message/47995.
maybe you can use the board with another type of MMIC for better results.
