Monday, July 26, 2010
Yes, I am looking at purchasing the VX-8DR by Yaesu.
I have the VX-7R and love it. It has been a great radio for me and dose everything I want it too. The only issue is as of late I have had some audio issues. When I adjust the volume knob I get some crackling and also get crackling when not adjusting the volume. I put the radio on the MFJ-269 and everything looks great. So I guess my HT is getting old. Besides, the VX-8DR looks much cooler than the VX-7R and I really want to get back into working the satellites.
The VX-8DR has some really nice features that the VX-7R dose not has. It is also a thinner rig from what I have heard.
I guess my quest for the Kantronics XL and the Rig Blaster Pro might sit on the back burner, then again, so many decisions to think about.
BTW, The Yaesu VX-8DR is an APRS® enhanced version of the popular VX8R. Key additional features of the VX-8DR include:
*Smart Beaconing Function.
*Station List memories has increased from 40 to 50.
*The number of APRS® Message Memories has increased from 20 to 30.
*DIGI-PATH route indication function.
*Heads up compass display to the GPS screen.
*The Message received LED flashing rate is selectable.
*The number of DIGI-PATH route settings has increased from 1 to 7.
The Yaesu VX-8GR is the newest member of the proud VX-8 family. The VX-8GR dual-bander only covers 2 meters and 440 MHz and receive coverage is 108-999 MHz (less cellular frequencies). This version has a built-in GPS unit right out of the box! It is not Bluetooth capable. Click here for Yaesu VX-8GR info.!
The VX-8R, VX-8DR and VX-8GR come with the SMA antenna, FNB-101LI Lithium Ion battery pack (7.4V 1100 mAh), belt clip and NC-86B battery charger. (The NC-86B should only be used for receive, because it is not capable of supplying sufficient current to support transmit).
HOW TO READ PROPAGATION NUMBERS
The A index [ LOW is GOOD ]
- 1 to 6 is BEST
- 7 to 9 is OK
- 11 or more is BAD
Represents the overall geomagnetic condition of the ionosphere ("Ap" if averaged from the Kp-Index) (an average of the eight 3-hour K-Indices) ('A' referring to amplitude) over a given 24 hour period, ranging (linearly) typically from 1-100 but theoretically up to 400.
A lower A-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Ap-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.
SFI index [ HIGH is GOOD ]
- 70 NOT GOOD
- 80 GOOD
- 90 BETTER
- 100+ BEST
The measure of total radio emissions from the sun at 10.7cm (2800 MHz), on a scale of 60 (no sunspots) to 300, generally corresponding to the sunspot level, but being too low in energy to cause ionization, not related to the ionization level of the Ionosphere.
Higher Solar Flux generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; Solar Flux rarely affects the 30, 40, 60, 80, & 160 Meter Bands.
K index [ LOW is GOOD ]
- 0 or 1 is BEST
- 2 is OK
- 3 or more is BAD
- 5 is VERY VERY BAD
The overall geomagnetic condition of the ionosphere ("Kp" if averaged over the planet) over the past 3 hours, measured by 13 magnetometers between 46 & 63 degrees of latitude, and ranging quasi-logarithmically from 0-9. Designed to detect solar particle radiation by its magnetic effect. A higher K-index generally means worse HF conditions.
A lower K-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Kp-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.
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