FXDD History Files

For you readers who concerning on online forex trading, sometimes we need to perform backtests to see how our expert adviser run. During backtesting procedure, one thing important is MT4 history files who needed by MT4 to perform backtest and take the forex transcactions data ticks from history files on each forex currency.

FXDD serve MT4 history files on this link. It also explain how to use this FXDD history data files on our MT4. History data files is important, especially good quality MT4 history data which contain complete every single ticks collected during the past. I don’t know how good this FXDD history data files. But as I read from many forex forums, FXDD history data files are high quality enough to used it during MT4 backtest procedure.

The FXDD history data files are in M1 format. So it’a all we need to use this history files. You can visit that link and choose proper FXDD history data file to your need and download it.

Go Green.

Walkie Talkie And Concrete

Walkie talkie radio is widely used in construction project. Lightweight and easy to use is the best reason to choose walkie talkie radio rather than amateur radio equipment to handle communication traffic. But do you know how the walkie talkie signal act in concrete area?

Basically a concrete wall is perfect obstacle for radio signal come out from walkie talkie radio. Especially if you use FRS/GMRS walkie talkie radio system where the frequency usage is in UHF category. Theoritically, you will get communication difficulty with your walkie talkie pair.

So you need reflectors to make your RF signal can be delivered to your communication pairs. If your construction project in the middle of concrete forest, these are so many reflectors available to your walkie talkie traffic. But if your concrete construction project is the first in the area, so you have to search to some point to search good position to give your walkie talkie pairs can “see” each other.

Walkie Talkie For Fun

When I was a kid, it’s so fascinating watch adults use walkie talkie radio to talk with someone far. It’s also looks so modern for a kid. Walkie talkie radio is dreaming toy and always give best fun level.

At that time, walkie talkie radio was working on 27 Mhz frequency. Not sure why is that. But I think it’s caused by 27Mhz is free band where CB radio and walkie talkie can work without license needed.

And nowaday walkie talkie radio is working on 462 Mhz where FRS/GMRS communication system had their frequency slot. Maybe term of  “walkie talkie” also replaced with term of  “FRS/GMRS”.

Some advantages are obtain with this frequency shifting. At least modern walkie talkie radio give better audio quality (they use FM modulation for walkie talkie) and also the walkie talkie size can be shrinked phisically. So now it’s common when we saw walkie talkie radio as small as watch wrist in kid hands.