Author: shedberg

Go here to track the progress of the DXpedition: http://www.findu.com/cgi-bin/find.cgi?call=ad7mi-13

Looks like we made it high and dry. The rain pretty much stopped at 2pm. I’m showing a daily total of 4.92″ since midnight. Most of the rain fell between 7am and 1pm. The water in the driveway is slowly receding. When it goes down a bit more, I’ll start packing the RV. Hope to get an early start Saturday morning.

I had the RV I picked up from Ft Eustis yesterday parked in front of the house and noticed by about 11am that the rising water was getting near the storage compartments of the RV. I decided to move the RV into the driveway and on to higher ground. I waded out to the RV, the water coming up to midcalf. I made it to the RV and after a quick loop in the neighborhood, I got the RV into the driveway. Some of the streets around here are flooded, maybe with 3″-5″ of standing water in the middle of the street. Lots of small branches and minor debris in the road.

Needless to say, the DXpedition depature has been delayed until Saturday morning.

As of 10am, we’ve had over 3″ of rain – a daily record. The backyard is now flooded, about 1″ of standing water. There is standing water in the lower half of the driveway covering across the street. High tide is around 3pm this afternoon. Looks like the storm ahould be passing us in a few hours.

Wide band transmit mod for the IC706mkIIg requires removal of diode D.2030. Remove top cover to access main board. Locate IC chip 4052C-8713. Looking at the chip and reading the number from left to right, look just left of the chip to locate 11 solder pads running up and down. Diode D.2030 was the tenth diode from the top of the solder pads on (USA Version) radio. Remove diode. This modification opens up transmit on HF, VHF, and UHF bands.

Ken Bessler KG0WX

http://www.athensarc.org/706.htm
Frequency Expansion

photoNOTE: The author does NOT advocate any illegal operation. It is YOUR responsibility to stay within your authorized bands. NOTE: This is for the MkIIG ONLY. Earlier models use an entirely different procedure. NOTE: This procedure WILL RESET the radio to a factory-new condition. All memories and settings will be cleared.

This modification will allow the MkIIG to transmit on most of the frequencies that it receives on.

It is useful for:

1. Accessing the new Amateur 60-meter channels
2. Authorized MARS and/or CAP operation
3. Authorized Maritime and/or Aviation SSB operation
4. Authorized VHF and UHF public service (police, fire, etc) operation
5. Authorized Land Mobile radio operation
6. Authorized VHF marine operation
7. Unauthorized operation on any frequency, only in immanent life/death emergency, only when no other means of communication are possible (legal but still legally risky)
8. NOTE: Amateur Radios are NOT FCC TYPE-ACCEPTED to operate in other services — even if you have the license to do so! Don’t goof around in the legal gray area unless your leg is mashed under an 11-ton boulder! Remember that other (non-Amateur) radio services require not only a license, but also a radio that is FCC Type Accepted for that service!

Tools: The 706 uses components that are extremely tiny. You will need at least the following tools:

1. 2.5x to 3.5x headband visor magnifier or jeweler’s loupe
2. Bright light
3. 15 watt pencil iron with a clean, lightly tinned, needle sharp point
4. Fine-point tweezers
5. Extremely steady hand

How to remove it (D2030):

(IC-706MkIIG ONLY – Top PCB – Red Arrow Indicates tiny SMT Diode to Remove.)

1. Some people just crush it with needle-nose. I don’t like that idea since it might damage the PCB.
2. Take the tip out of your 15-watt iron. Chuck it in a drill. Turn it against a grinding stone, to a needle point.
3. Reinstall the tip. Heat and re-tin it. Tap off the excess solder.
4. Remove power cable from radio. Remove top cover slowly. Carefully unplug speaker.
5. Using visor magnifier and bright light (and a very steady hand), catch one end of the diode with tip of iron (very lightly tinned).
6. Gently pull upward with the iron. The diode will either rotate upward on it’s other lead – or it’ll break off.
7. If you lift one end just a little, you can leave the diode there in case it ever needs to be reattached.
8. Plug in speaker. Reinstall cover. Power up. Reprogram all your memories and settings.

(This list effective as of June 2004.)

-1, 2, 3, 4 are for digipeaters and other home stations

-6 is for Operations via Satellite
-7 is for TH-D7 walkie talkies
-8 is for boats, sailboats and ships (maybe 802.11 in the future)
-9 is for Mobiles
-10 is for operation via The internet only
-11 is for APRS touch-tone users (and the occasional Balloons)
-14 is for Truckers
-15 is for HF

by David Kestenbaum

Morning Edition, August 22, 2006 · A reclusive Russian mathematician named Grigory Perelman has puzzled the world of mathematicians. He is credited with helping solve the Poincare Conjecture — a famous math problem about the shapes of space first posed by Henri Poincare in 1904.

The Clay Institute offered a million dollar prize to encourage someone to solve the Poincare Conjecture. But Perelman, the man in the spotlight, never showed up to claim his prize. Now, he may win yet another prize, the Fields Medal, an award given every four years for exceptional achievement in mathematics.

The problem that Grigory Perelman helped solve was first posed by the Frenchman Jules Henri Poincare in 1904. Who was the man behind the question?

A learner of exceptional ability, Poincare contributed to virtually all parts of mathematics. His eyesight was so poor that he often couldn’t see the board in class, but he compensated with his phenomenal memory and his ability to visualize information he heard.

Toulouse, the director of a psychology laboratory in Paris, took interest in Poincare’s mind. Toulouse, who used only one name, wrote a book about Poincare, observing that while most mathematicians build upon established principles their colleagues have developed, Poincare always began his work from a basic principle.

Toulouse wrote that Poincare, “does not make an overall plan when he writes a paper. He will normally start without knowing where it will end … Starting is usually easy … If beginning is painful, Poincare does not persist but abandons the work.”

But he didn’t give up. According to Toulouse, Poincare expected that the crucial idea would come to him after he stopped concentrating on the problem. So he would often abandon a project temporarily, assuming that his unconscious mind would continue to work at it. His method of working has been compared to a bee flitting from flower to flower.

One of Poincare’s most famous discoveries came in response to a prize established in 1887 by the King of Sweden, Oscar II. The challenge was to solve the three-body problem in celestial mechanics, a problem that involved the motion of orbiting bodies in the solar system.

Though Poincare did not provide a complete solution, he was awarded the prize because of his work’s importance. Poincare had already sent his prize-winning work to the publisher when a mistake was discovered! Poincare revised the publication, but even his mistake turned out to be valuable; it laid the foundation for chaos theory.

Poincare is sometimes acknowledged as a co-discoverer, with Albert Einstein and Hendrik Lorentz, of the special theory of relativity. The three were working on the problem around the same time, but Poincare and Einstein were not collaborators. In his work, Einstein made no reference to Poincare but in later talks acknowledged him as a pioneer of relativity.

Poincare disagreed with philosophers who thought that mathematics was a branch of logic, and saw intuition as the key factor for discovery. He wrote in Mathematical Definition in Education that, “It is by logic we prove, it is by intuition that we invent.”