handbook missing projects

[VA3SAX]

just ponderings on my part. I don't think it's really anything I want to build but the back of the 2006 version of the ARRL handbook it claims tthat it contains building instructions for a 20w ATV transceiver...however the book itslef does not contain even a mention of such a project. so what happened?

[N2RJ]

Really? I have to check mine.

[wa9cwx]

It's in Video format.
Can't be read with normal vision.

[w3dub]

Quote[/b] (N2RJ @ June 02 2007,20:54)]Really? I have to check mine.
Same here.. don't think its in the 2007 either..

most of those projects seem a little over my head at the moment... although its good reading. Learned a lot between that and the antenna book.

Tommorrow I'm making a list of materials needed to build the projects I'm looking at.. mostly antennas.

[KB1KIX]

Check with the league - they might have an update available online (I had a similar situation with an EmComm book).

I mentioned it to someone and they put it online soon thereafter.

Jonathan

[ky5u]

Projects coming in the next handbook:

1. Converting CB Amps to Amateur Use.
2. Rebuilding that Turner +2 into a bodacious Ham mike!
3. Cutting that Moonraker or Gizmotchy for 10M.
4. Modifications to 100W rigs to boost up your power.
5. 10 Pill amp you can build on a weekend!
6. Golden Screwdriver's five easy Ham Rig mods.
7. Converting a vehicle on concrete blocks to use as a beam rotor.
8. Trailer Parks and RFI.
9. Echo, Roger Beep, and Browning Ping on one easy to build board!
10. Throwdown tips and tricks.

[WA9SVD]

While I'm sure it wasn't intentional, it IS a sign of poor editorial oversight. Unfortunately, that (as well as occasionally questionable technical information that at times borders on "urban myth" rather than scientific fact) has become more and more frequent in the ARRL publications, including QST, over the past few years.

[KB1KIX]

Quote[/b] (AG4YO @ June 03 2007,11:04)]8. Trailer Parks and RFI. #
Hey!

I resemble that remark!

However, my trailer acts as a Faraday cage of sorts!

http://www.qrz.com/iB_html/non-cgi/emoticons/tounge.gif

Jonathan

[VA3SAX]

the product notes on that edition doesn't show anything about that error yet: linky (http://www.arrl.org/notes/9493/)

[w1vt]

A key part, the M57716 Mitsubishi 20W RF power module, was discontinued by the manufacturer.

[WA9SVD]

Quote[/b] (w1vt @ June 06 2007,11:47)]A key part, the M57716 Mitsubishi 20W RF power module, was discontinued by the manufacturer.
Are there any substitute parts or replacements available? That module was used in some commercial Amateur equipment.

[w1vt]

I don't know of a suitable substitute.

http://www.mitsubishichips.com/Global....47m.pdf (http://www.mitsubishichips.com/Global/content/product/hf/sirfpowermod/uhf300-500mhigh/uhf300-500mhigh/ra30h4047m.pdf)

The RA30H4047M is what they make now--it isn't even designed for linear operation, though they say it is possible with proper biasing.

There are still supplies of the M57716 from RF parts and other vendors for fixing radios.

[WD4CHP]

If you want projects to build, look in the older handbooks.
I bought the 2007 handbook and was a real waste of money.

[K0RGR]

Does it still have the 60 meter rig in it?

[w1vt]

No, the 60M rig was replaced with the HiMite, a low power transceiver that can be built for 20, 17, 15, 12, or 10 meters.

My first job was working on construction projects for the ARRL Handbook--I remember Ed Hare designing a frequency counter for the Handbook. #These days the lab is busy with issues like BPL, powerline noise, and Pave Paws--the focus has changed to meet the needs of our members.

[VA3SAX]

the problem with some of the older handbooks though is often the availability of parts. what we need is some sort of a manual full of homebrew projects for which the parts are not obsolete

[WA9SVD]

Quote[/b] (VA3SAX @ June 08 2007,08:00)]the problem with some of the older handbooks though is often the availability of parts. what we need is some sort of a manual full of homebrew projects for which the parts are not obsolete
With a little reaseach, you can often find suitable substitutes, perhaps with slightly different physical dimensions; but projects that relied on WW II mil surplus parts are getting a bit difficult to reproduce. http://www.qrz.com/iB_html/non-cgi/emoticons/sad.gif (Same with projects that used an "old, discarded TV transformer." I haven't seen one of THOSE in 20 years!

But what's even more frustrating (and infuriating) were Handbook or QST construction articles that ONLY gave Rat Shack part numbers, instead of an industry standard number. Going into an R-S store and asking for a five year old part number will get you a blank, blankey, blank stare...

[va7aax]

some of the transistors are really hard to find , for example a CK722 . this transistor was common long time ago but not now,

Ironically almost all tubes are available