[TenTec] SDR say what?

[Charles Harpole]

I have found the RDS-8000xp to interface intimately with the

T.G of the HIPr but only if the 640 was in uscb mode and on

full ATP or at least 70% ATP when modulated by the MIEHF sub-

mode C to F converter.  But, do not try a F to C converter without

buffering the output/input with a .02 uMGR SMD.  A wired-in

.02 will introduce too much MID due to lead length.

Yep, that is what it is like to read this stuff.  GL one and all.


Charles Harpole

k4vud at hotmail.com





> From: wd8arz at ix.netcom.com
> To: tentec at contesting.com
> Date: Sat, 23 Aug 2008 08:37:45 -0400
> Subject: [TenTec] Band Scopes - SDR
>
> Boy do I agree about the 'real time' band scopes being the way to go. Love
> my Kenwood SM-220 on the I.F. of a Icom IC-720. Will keep em both for a long
> time to come. Great for tuning shortwave and finding those elusive utility
> stations that pop up on the scope after you have just tuned through their
> frequency ... hi hi
>
> For another real-time band scope, I use the SDR-IQ. The difference is I dont
> have to connect to the I.F. of any radio for it to work (though you sure can
> if you wan to). It is a full receiver of its own, with a configurable band
> scope / display for various configurations. I use it as a standalone or with
> serial ports connected to my FT-1000MP (or TS-480HX). This gives me four
> real time frequencies I can listen to (two with in the front end pass band
> with the MP, and two with in the pass band using the IQ - and doesnt have to
> be with in the pass band of the MP). As the MP is tuned, the IQ follows if
> you wish. Just have to be careful about not transmitting into the input of
> the IQ (tap the antenna inside the MP on the receive only line, or use
> external relays). Directly interfaces with Icom, Kenwood, Elecraft and Yaesu
> radios for use as a tracking panoramic adapter.
>
> http://www.rfspace.com/SDR-IQ.html
> "The hardware samples the whole 0.0001-30 MHz band using a high performance,
> 14 bit analog to digital converter (ADC) running at 66.6 MHz. The digital
> data from the ADC is processed into I and Q format using a direct digital
> converter (DDC). The I and Q data is then sent to the PC for processing
> using a USB 2.0 interface. All of the demodulation and spectral functions
> are done on the PC side.
>
> The SDR-IQT comes with a High Frequency (HF) amplified front-end with
> switched attenuators, switched filters and 1Hz tuning. The SDR-IQT comes
> with the latest version of SpectraVueT software. It supports AM, WFM, USB,
> LSB, N-FM, DSB and CW with fully adjustable DSP Filter bandwidths and FFT
> sizes of 2048 to 262144 points. The resolution bandwidth is as low as 0.031
> Hz." "High resolution spectrum display with higher resolution and speed than
> those in $10K radios."
>
> Plus I can Record and play back spectrum segments up to 196 KHz wide with
> full demodulation and tuning capabilities. That means an RF spectrum
> recorded to a file that can be played back with full real-time options to
> change modes and filter parameters. Way cool!
>
> Did I mention remote access / control of the IQ over my home wifi lan? Love
> setting on the back deck with my laptop and having full access to this
> system.
>
> 73 from Bill -WD8ARZ
> http://hflink.net/qso/
>
>>From the web site:
>
> Features
> ======
> -Smallest SDR with RF DSPT that samples the whole HF band at once and
> performs the initial filtering at 67 MHz sample rate with 23 bit accuracy.
> Uses a high performance Analog Devices 14 bit analog to digital converter.
> -Sends 16 bits of I/Q Data to the PC via USB. No messy soundcard cables
> required.
> -SDR-IQ is USB powered. No power supply is required. Works great with
> laptops running on batteries.
> -Incredible receive performance.
> -High resolution spectrum display with higher resolution and speed than
> those in $10K radios.
> -RF preselection filters for great IMD performance.
> -Serial port to directly interface with radios like the Icom IC-R8500,
> IC-R9000, IC-R9500, IC R7000, IC-R7100 and AOR AR-5000.
> -50 ohm RF input that can be easily interfaced to antennas, Ultrasonic
> transducers, IR detectors, and other RF equipment.
> -Open source ActiveX control and ActiveX sample program for easy software
> customization. SpectraVue (not open source).
> -Windows, Linux and Mac OS drivers for developers.
> -Network server that allows remoting of the SDR-IQT. Servers available for
> both Windows and Linux.
> -Adds the best panoramic display features to transceivers like the Yaesu
> FT1000, FT2000, FT9000 and IC-7800 using the RX output connector or RX
> loopback
>
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