Planetronics 925 Discovery
342902
Easy to use. No problems connecting. Long battery life. I get a lot of talk time. Stylish. Get good comments from people who see it. Almost no back ground noise for the people I am talking to when I am driving with the windows down.  If you want a good Bluetooth earpiece for a good price this would be the one.
1157163
Great Product! Highly recommended by those at the B.A.R.N. https://www.facebook.com/groups/barn.radio.member/ check out the group page, lots of useful information on Baofeng Radios :)
2595721
Four Pillars of Radio Astronomy: Mills, Christiansen, Wild, Bracewell
by R. H. Frater, W. M. Goss and H. W. Wendt

A welcome history of radio astronomy in Australia, don't let it be forgot, based on the contributions of Bernard Mills, Chris Christiansen, Paul Wild and Ron Bracewell - a group of Australian radio astronomers who lead the world into this new field of research from the 1950s.  Mills and Christiansen invented the Mills Cross and Chris Cross aerials, Wild the solar heliograph, while Bracewell provided the mathematical basis for indirect imaging.

Confusingly a detailed description of piers from some old Stanford University solar array, now forming a sundial in New Mexico, commences the book. Then an explanation of radio-waves discovered in 1931 if readers were to start with zero knowledge. Then historical and technical information, lots of early aerials, reminiscences, and the odd gripe (priority of publication; whether an observation of Centaurus A was made during an officially granted period).

This is welcome, but the contribution of Bernard Mills, for example, is not the Mills Cross but radioastronomy discoveries arising from observations with the instrument. Contribution to knowledge in astronomy justified its construction. And from this experience, justification for future capital expenditure. The book does not contain a single picture or diagram of a galaxy, galactic nucleus, quasar (1963), black hole (1964), pulsar (1967), or other optical object identified as a radio-source, never to be forgotten. In comparison the pictures of old wire aerials can be forgotten.

Australians need to know what was achieved, and can be achieved by our children, in radio astronomy, astrophysics, and cosmology. The aim is to recreate Camelot the  ... atmosphere ... where no attempt at anything was going to be laughed at and that encouraged what-if and why-not questioning albeit with the larger scale of modern radio astronomy instruments.

Despite wonderful support from overseas patrons, Australian taxpayers fund the majority of science projects and should demand participation in this research via information. This means the real information on research enlarging on the standard Conversation tweet by linking to the actual article and advice on how to best tackle reading it.  It means no-cost, convenient access to all actual academic publications taxpayers fund and thus own. It means being able to read the papers referenced in this book. Why fund scientific research projects otherwise? Ultimately research depends on the enthusiasm of the Australian people to support such endeavours.

This is not asking Frater, Goss & Wendt to write an encyclopaedia. The nature of  a book has changed to a roadmap of selected Internet links: what to take out of each original publication reading the topic as a project over some months. It is just asking that research groups facilitate access to their research results as US universities, e.g. Stanford and MIT, do with their undergraduate lectures making them available on the Internet.

Modern astrophysics and cosmology research, especially if Australians participate,  can motivate our students in physics and mathematics rather than currently restricting teaching from Euclid in the BC to Newton in the 1600s. My eBook report Mathematics the Truth available free on iBooks elaborates. It is the unknown, the un-understood, and the unexpected that are the major motivation to understand any subject.

Malcolm Cameron
27 December 2017
3950922
I AM GLAD I GOT MY PLANTRONIC DISCOVERY 925 BLUETOOTH. I HAVE NO REGRETS, IT IS VERY CLEAR AND THE FAR DISTANCE THAT I CAN GO AND LEAVE MY PHONE AT MY WORK STATION. I TOLD MY CO WORKERS ABOUT IT. AND ALSO IT'S $135.00 AT THE NAVY EXCHANGE HERE IN GUAM. EVEN THE PORTABLE CHARGER REALLY WORKS WHEN I AM AWAY FROM MY OFFICE IT'S SO AWSUME. I AM VERY GLAD THAT I WAS SHOWN AMAZONE.COM
875928
I have had MANY radios in my day. This radio is absolutely amazing! The only other radio in the same price range is the TRANAS PLUS. The radio is super easy to use. I set up 5 models in less than a hour. Email Jim at diamond hobby for latest firmware, he is super helpful. You will pay a grand for a comparable big name radio!
4250516
I just received the product today, plugged it into my Pandigital Planet and it works like a charm. I didn't have to change any settings so that was a plus for me. This is so much better than using the touch screen keyboard.
2208224
So far it's a big step up from what I used to use -- the FR410 with that stupid touch bezel.
However, one concern is the amount of time it takes to find satellites sometimes even if it's somewhere I've run before. One time it took 3 miles of running to find satellites.
I know this is old and that's why it's cheap nowadays, however, it seems to fit my needs and I don't need the latest and greatest anything. I may cry if it breaks and Garmin refuses to fix it though.
2912999
The UV-5R arrived and was packed well.  I installed the battery and the charge level indicator on the display showed full charge.  Nevertheless, I put it in the charger and charged until the indicator turned green as per the instructions.

Prior to purchasing, I did considerable research on the UV-5R, including subscribing to the UV-5R yahoo group, so I pretty much knew what to expect.  It was no surprise to me, then, that the operating manual was poorly written, and it was possiblethat I may experience some quality issues.

After quickly abandoning the Baofeng operating manual, I went to the yahoo group and downloaded instructions for manually programming duplex frequencies for the closest local repeater.  Things went fine until I pressed the PTT button and was unable to bring up the repeater.  A trip to the test bench showed that the radio put out 4.6 watts, but the antenna was defective.  Since I planned all along to use a better (longer) antenna, I threw the factory antenna away, installed the new antenna, and received a full-quieting report from using the repeater.

Unless you have only one or two frequencies to load, programming frequencies via computer is the way to go.  CHIRP is an excellent tool for programming this radio, and it can be downloaded for free.

This radio is now dedicated to living permanently in my CERT kit.  Its programmed with the local repeaters, and simplex frequencies I will need, as well as receive-only FRS frequencies.  CHIRP made all of this easy, including assigning names to each memory location.  I did not try the Baofeng programming software as user in the yahoo group reported to many problems.

All in all, the UV-5R is an amazing bargain for under $40, however it is probably not the radio for an inexperienced or first time user.
2921225
I just got the book and have skimmed it and started to read it in depth.  My dad worked there 1959-1969 so this is part of our history, and I got a copy for him and a copy for myself.  Lots of history and personal accounts of the 1950-1967 period from inception to the merger with Harris-Intertype.  Lots of details about their space telemetry projects, the hardware that flew on the rockets and spacecraft, the ground radio dish systems for capturing the telemetry, and the ground hardware for collecting and storing the data from the telemetry.  All this of course began at the dawn of the "space age" which was soon after transistors and integrated circuits first were used in electronic systems.  Radiation, Inc. was one of the very early companies to provide this business model.
55325
DI hate using discontinued parts for my space ship. Then there is the giant white noise rush between songs, long pauses and phone calls back to mother base. Oh well. It works, hope ti holds out until they issue built-in Bluetooth in the new ships!
3580437
This has been a wonderful new twist for our astronomy club's public outreach activities. Being able to take your own photo, and post to social media is a great way to build interest in astronomy!

Would LOVE a device that works for multiple models - not just iPhone 4/4s/5/5s. Maybe that's asking too much.
3593464
This product is just as described.  I opened the box.  Read the instructions, and inserted (lithium) batteries and it just worked, no problem.  As mentioned by others, it took a few hours to bring in the time signal.  Then, I had a slight problem setting the Time Zone to Eastern.  After fiddling for a few moments, I found that I had to turn the clock time signal off, set the time zone, then set the time signal back on.  Didn't see that in the instructions.  After that, everything is working fine.

It has large easy to read digits for outside and inside temperature and humidity readings.  I liked that you could set the date to show the day of the week rather than the seconds on the clock.  The size of the unit is good for a desktop unit.  The outside sensor has no problem sending it's signal through an aluminum sided house wall from about twenty feet or so.

As others have mentioned, it would have been nice to have a removable protrusion from the backside so it could be hung on the wall.  Has a nice picture frame look to it.  But, it's definitely desktop only.  Maybe on newer models Oregon Scientific could consider this.

Overall, we love it.  Excellent value for the money.
3464847
The product is amazing.  Sometimes it takes a little while to locate a satellite but I leave it on my window sill while I'm getting ready so it has time to connect. There are so many features and all are very easy to use.  I haven't tried to HRM feature yet but plan to do so soon.
3795159
The telescope seems to be working, though I do have problems with it. From additional reading on web forums, new telescopes should come with a manual printed in 2016, and hand controllers with a mini-USB connection. Telescopes from this seller seem to be a significantly older 2014 version with the manual is from 2014, dated firmware, and the hand controller with the RS-232 phone jack style connector. And no, Celestron does not pack a cable inside the box for us. Yes, the assessory box with additional eyepieces and filters is a very good addition. I bought a separate 8mm to 24mm zoom, but the included eyepieces are a better deal. Just wish I had the USB hand controller. It is a $100 item from Celestron. 3 stars for the older parts.
169443
I haven't connected it as of yet since I'm still looking for ANY kind of documentation on it.... It would be nice to have a clue of the polarity of the RS485 T-Block among other things.  I guess I'm being a bit paranoid, especially since the thing only cost approx. $5.00 and if I toast it I'm not out too much.
2997170
In the days of vacuum tubes and hard wired circuits, ( Jan,60 to March, 64, ) I was an ETR_ 2 in the Navy.  I recall those days a little different than you describe, but it was also a life changing experience for me.  Thanks for the memories.
2175439
So Far So Good I only Figure Out The radio
The Sound Is Really Loud & Its Really A Good Buy I can't Figure Out How to connect to the Bluetooth... Can someone help me because I still working on it