Monday, January 24, 2011

Pains Inmy Nasal Cavity

Firmware 1.02 for the Kenwood TS-590s




The day January 20 Kenwood released version 1.02 firmware for its new TS-590s

Algunas mejoras:

Revises the following symptoms.

1. In [SSB-DATA] mode, Speech Processor might not be disabled internally.

2. At the end of TX tune mode, carrier output returns to normal mode level after a short delay.

3. When the TS-590S is turned ON, the USB port connection may be unstable.

4. When the built-in electronic keyer is set to Mode A, CW keying may not work properly.

5. TX rise time power spike activates some linear amplifiers' input power protections.
(The firmware Ver.1.02 revises the ALC response characteristics to reduce the power spike.)

6. When a separate RX ANT is connected, TX output power may be fed back to the RX ANT connector and might affect internal circuits.

Para mas información visite 

Saturday, January 22, 2011

White And Blue Bathroom Vanities

RF Power Transistor Outputs 1.5 W - UHF

RF Power Transistor Outputs 1.5 W

RF Power Transistor Packs 1.5 W
Chiseled for UHF pulsed radar applications, the Model 0405SC-1500M RF power transistor exploits state-of-the-art SiC technology to provide 1,500W of peak power in a compact single-ended package that replaces push-pull balun circuitry found in conventional silicon BJT or LDMOS designs. The device is a common gate, class AB transistor designed for UHF frequencies from 406 MHz to 450 MHz. It is built with 100% gold metallization and gold wires in a hermetically sealed package suitable for use in weather radar and over the horizon radar applications. Other features include a medium pulse format of 300 µs at 6%, a typical power gain of 8 dB, and a drain efficiency of 45% at 450 MHz. MICROSEMI CORP., Irvine, CA. (800) 713-4113.