RF Preselector or not? tiny SCR Heros Tech. Icom DIGISEL Yaesu VRF Harris RF-551A

RF Preselector: New tiny SCR Preselector 1.8MHz to 30MHz Tunable Band Pass Filter Assembled and kit versions. – tiny SCR Preselector (SCR) Software Controlled Radio via USB or I2C Bus (16 bits standard I2C serial bus interface) Made by Heros Technology Ltd in the United Kingdom.
It can be looped between RX OUT and RX IN of the HF Trancseiver, or SDR Receiver.  – A large toroid core T-200-7 is used, the large core offers a non-loaded Q (efficiency) value. A five bands tuneable Band-Pass Filter bank make up the core of the tiny SCR Preselector, and five telecom grade relays for band switching are connected to its corresponding section of the coil through the Band Selector control on the program software

See the Links and  following image – Preselector or not? Icom Digisel, Yaesu VRF ….

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FTdx-5000MP. The new Yaesu HF/50MHz 200W Transceiver and SM-5000 Monitor

FTdx-5000 Series – The new Yaesu HF/50 MHz 200W  Transceiver: FTdx-5000MP, FTdx-5000D, FTdx-5000 and the SM-5000 Station Monitor.
The Yaesu FT DX 5000 Series will be formally introduced by Yaesu very soon. Pricing and availability is currently unknown (www.radiocronache…23.11.2009)

!!! FTdx-5000 by Yaesu Broshure: 14 MHz band 2kHz offset 105 dB 3rd-IMD, IP3 +36 dBm, way better than the Elecraft K3 @ 102 dB IP3 +26 dBm!

The FTdx-5000 (Main Receiver only) includes a rather traditional 1st IF 9 MHz (Elecraft K3 1st IF 8,215 MHz) and provides for selectable roofing filters (6-pole crystal) at the first IF to limit the off-frequency signals getting into the receiver.
Note that the roofing filter’s job is only to protect the rest of the receiver, and that the operating bandwidth filtering is performed by the IF DSP (like Elecraft K3 Transceiver).

See the following pictures and Manufacturer’s Specifications…..

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D-STAR Adapter Kit BX-192 D-STAR for all FM 9.6Kb VHF-UHF Radios. D-STAR TV GM7HB and more

D-STAR BX-192 Adapter. The kit includes a PCB with SMD components preassembled and wired with all necessary components and the D-STAR module by FUNKamateur.

D-STAR BX-192 Adapter. Der Bausatz enthält eine mit SMD-Teilen vorbestückte Platine sowie alle erforderlichen bedrahteten Bauelemente und das D-STAR-Modul (siehe FA 6/09). Er wird ohne Gehäuse geliefert (Gehäuse in Vorbereitung)

See the Links and  following image, D-Star TV for DV, D-star on HF in test, and more…..>

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