Hi all,

when I talked to Reinhard, DH3NAB about their latest version of the SSPA (www.rf-kit.de) he advised me to wait until their new version (with PIN diodes switching, reaches <5ms switching time) will be launched. The year was 2019.

As you know my preview parts talked about:
SPE EXPERT 1.3K-FA
ACOM 1200S
JUMA PA1000
LINEAR Amp Gemini HF-1K
Azden AZR-1000
Elecraft KPA1500
Burst-2000A

Here is what the RF-Kit offers these days...

The new version B26-PA RF2K-S

The RF-Kit B26-PA RF2K-S comes at first as a kit. In this case Kit does not mean that you get 100 plastic bags with individual parts, you need to assemble and solder boards, drill housing parts or connect the PA.

The PA kit is always delivered as an almost finished device. To make the kit an operational device, it is necessary to obtain a Raspberry® Pi 4 - 2GB and a power cord. All other necessary parts such as 1 x coaxial cable, power plug, USB cable, HDMI cable and micro SD card are included in the scope of delivery.

To finish the kit the Raspberry has to be installed (spacers are already mounted for this purpose and also the necessary fixing screws are included). Connect the supplied USB and HDMI cables, solder in the coaxial cable. Thereafter, commissioning takes place with the necessary calibration / setting.

No special tools are necessary for all this work. Screwdrivers, soldering iron, DVM, Ampere meter / current clamp and RF power meter are everything.

If you have any questions, please contact RF-Kit and a very large community at Groups.io with more than 1,300 members. A current version of the operating instructions is also available there at any time.

A micro SD card is included. Since the PA has a LAN port for possible "remote operation", the operating software can be downloaded from the Internet, and always updated with the availability of a new version.

General Features:

Frequency Range: 1.8-30 MHz and 50-54.2 MHz
RF-Output: 1500 Watts - 6m: 1100 Watts (with headroom)
Exciter Drive Level: 50 Watts on all bands
Efficiency: Up to 70% varies by band
TX/RX switching: ≤1mS PIN-Diode switching
Internal Automatic Antenna Tuner ( unlimited Memories )
1X TRX and 4x Antennas
Excellent signal quality
Very silent operation due to speed controlled low noise fans
Dual LDMOS devices rated at 3400 Watts
7-inch Color Touch Screen
Multiple user selectable displays
-55 dB output for Predistortion
Auto RF Sens Band Selection
TCI Interface for SunSDR
YAESU® Band Data Interface
YAESU BCD Band DATA output for external devices
CAT Connectivity through USB
CAT through IP ( UDP )
LAN Connectivity (full Remote operation)
Wi-Fi Connectivity ( Host or Client mode )
Quiet internal PSU 90-290 VAC
800W output 110 VAC; full power at 230 VAC
Power Meter from 1 W through 2 KW
Sleep mode for low power consumption
Software Update via Internet
Full Remote Internet operation via PC, Tablet or cell phone
Supports platforms such Apple® IOS, Android®, Linux® and MS Windows®
FCC approval for ready build kit's in US
External Power/ON applying +12V
Dimensions HWD: 7,4 x 12,2 x 16,7 inch. / 19 x 31 x 42,5 cm
Weight: 35,2 lbs / 16 Kg
FCC approval for ready build kit's in USA