Frequency range
Write the start and stop. A 2 kW FM pallet around 88-108 MHz is not a 2 kW HF stage and not a pulsed radar pallet. The card fails if the substitute band is narrower than the project.
EVIDENCE GUIDE
2kw rf amplifier: bind every claim to the named model
A 2kw rf amplifier line is a high-power purchase. 2 kW equals 2000 W and 63.0 dBm using 10 log10(2,000,000). LinkScope Sourcing 32 is an independent sourcing partner. This guide lists the evidence a buyer should demand before accepting a substitute. It is not a catalog of units in stock and it is not an authorization.
- Name the watt basis and the frequency where it was measured.
- Name the cooling path and the supply current the supplier used.
- Name the connector, the datasheet date, and the model on every plot.
Interface and evidence cards for a 2 kW discussion
Power rating
State continuous, PEP, or pulse and duty. If the buyer assumes 2000 W RF at a drain efficiency of 0.50, DC input is about 4000 W. At 48 V that is about 83 A before cable loss. Mark the arithmetic as buyer planning. Ask the supplier for the current on the datasheet.
Gain
Small-signal gain and compressed gain can differ by several dB. Ask which one the card uses and what drive, in dBm, produces the rated output. A missing drive level makes the gain number unusable.
VSWR and return loss
Ask for the mismatch the rating survives. At 2:1, reflected power is about 0.11 of forward power. A protection circuit may fold power back. That behavior is a specification, not a guess from the connector photo.
Connector and mounting
2 kW often moves the connector discussion toward 7/16 or another high-power series rather than a small SMA. Ask the supplier to name the series, gender, and any mating-cycle limit. Mounting may be a pallet or a rack chassis of several rack units at 1.75 in each.
Environment
Forced air, liquid cooling, or a passive heatsink must be named. Ingress protection applies to outdoor cabinets. A lab pallet does not inherit an outdoor code. Polarization and radiation pattern apply when the antenna is purchased with the amplifier.
What to verify before a lower-power driver is offered as a stand-in
A 100 W or 300 W driver can be a valid separate line. It is not a 2 kW substitute because the thermal path, the connector, and the supply current differ. Reject the swap unless the buyer changes the power rating in writing.
New and refurbished hardware diverge here more than on a small driver. A new 2 kW chassis may include a current drawing and a support path. A refurbished transmitter amplifier may be available for a legacy broadcast plant, but hours, tube or transistor complement, fan condition, and warranty months have to be on the sheet. Original-maker versus compatible is the second dispute. An original pallet may match the transmitter vendor policy. A compatible pallet may be quotable after the buyer checks gain, harmonics in dBc, and the exact transmitter model. Neither side is assumed compliant.
Class AB linearity and Class C efficiency are a third split at this power. Analog or digital modulation that needs a stated shoulder or intermodulation figure points toward the class the datasheet documents for that behavior. A constant-envelope service may accept a different class if harmonics are filtered. The filter insertion loss is its own line.
Background: in May 2026 a community station planning a spare asked for a 2 kW amplifier, quantity 1, ship to Georgia, FM band. Process: the desk required the supplier to say whether 2 kW was PEP or continuous, to name the cooling, and to attach a datasheet whose model matched the quotation. Result: one reply used a 1 kW nameplate and a note that two units could be combined. The buyer kept it off the single-unit comparison because the combiner, its insertion loss, and a second supply were not in the original line. The scene is a procurement example, not a measured station result.
Reproducible steps the supplier can be asked to follow: on 2026-scale lab practice, use a 50 ohm load rated above 2000 W, a directional coupler, and a power meter with a calibration traceability date still inside its interval. Record output power, gain, and VSWR at three frequencies inside the buyer span. Record harmonics on a spectrum analyzer in dBc. Record supply voltage and current. State the ambient temperature. This site does not claim those rows exist for any model. Measurement accuracy follows the instrument certificates the supplier attaches.
Limits to keep visible: the desk does not certify FCC equipment authorization, does not assign an NRTL mark, and does not treat ISO 9001 as a power measurement. Title 47 CFR Part 2 Subpart J, consulted on 2026-10-27, is a question list. A 75 ohm television plant, a fiber optical budget, and a switch forwarding rate are outside this amplifier evidence set. The inquiry labels and the requirement form are the next step. The article restates the checklist for the wider family.
Questions that still block a 2 kW comparison
Is the watt figure continuous at the carrier frequency the station uses? If the sheet is silent, the comparison waits.
Is cooling inside the price? A pallet price without the heatsink is a different scope from a rack with fans.
Which document names the model? A family brochure, a connector photo, or a standard overview does not.
Request a factory quote against this evidence list
Send frequency range, the 2 kW basis you mean, connector, cooling, quantity, destination, and timing. The form does not upload files. Paste the evidence you already hold into the requirement box.