What sets DP-AMP apart from other providers?

Other providers also sell their modules diligently on the Internet.
Sometimes with more or less success for the customer.

Temperature measurement:
Often not provided for or available, yet so important.
Most LDMOS fail due to overheating!
If the temperature is not measured at all or is measured far away from the LDMOS, the customer assumes that the power amplifier is cool, while the LDMOS is slowly being damaged.
Gradually, bonding wires come loose until failure occurs.
Sometimes it is also the manufacturer's intention to sell a cool power amplifier, at the expense of the customer, of course!
Sometimes it is also the intention of the manufacturer, as a cool output stage sells better, at the expense of the customer, of course!

Input protection:
Hardly any suppliers have the combination of TVS diodes, fast switching diodes, and Zener diodes to protect the sensitive gates.

Feedback resistors:
Those days are long gone—far too dangerous for too little improvement!

Inadequate filters:
The attenuation values in the passband (S21 transmission) are often too high.
This means that the filters heat up, which causes thermal stress on the components.
Any capacitors are used instead of special RF capacitors with high Q.
This becomes noticeable in the event of mismatches when the capacitors burn out.
“Thick” SMD capacitors with Q=500 are not RF capacitors.
The ESR is higher and so is the power loss; size is not everything.
This may work at SWR 1:1 on the dummy, but at VSWR 2:1 (100 ohms) the situation is completely different.

RX/TX switching:
Always an integral part of the filter module!
With other suppliers, this still has to be tinkered with or purchased separately.

Pressure bridges:
Even big brands have failed to understand the purpose of the pressure bridge.
Just screw a clamp onto the LDMOS, left and right.
Leave space between the bridge and the LDMOS because of the heat?!
There should be suitable material in between that presses down on the entire LDMOS.
When screwing it tight, the LDMOS should not form a “hollow back” but should be mounted with even pressure.
And when it comes to heat dissipation, this only takes place downwards!
There is air between the LDMOS and the white cap!

Innovations:
Innovation is rarely evident, neither in hardware nor in software.
Someone has to come along and show the way first, then others will copy them.

Shipping costs and taxes:
Goods from abroad are often offered at a net price, even within the EU!
Often, 21% tax is added, plus high shipping costs.
However, there are also “experts” who do not pay/remit any taxes at all:
If the tax is not shown, you should be suspicious.
For goods outside the EU, there is a 19% import tax!

Service and support:
If you get stuck as a customer, you immediately rush to Facebook.
The groups are full of people complaining and lamenting their woes.
The community is supposed to fix it, and the foreign-language provider remains silent.
This is something you see every day; they only make an effort when it comes to sales.

Learning the hard way:
If you buy cheap, you buy twice!
PA modules and filters from China are always cheap!
If you want to burn your money and learn the hard way, Aliexpress is the place for you.

Prices:
Quality has its price, but that doesn't mean quality has to be expensive!
Just don't start comparing apples with oranges!
If you compare correctly and take all of the above points into account, you will find
that there are often only small differences in price.
It is often not possible to make a direct comparison because the quality, safety, and features differ significantly.

Difference:
As you can see, DP-AMP differs significantly from other manufacturers and dealers.
Quality, innovation, features, safety, support.

Powered by passion!