Search found 443 matches

by David Gibson
Fri 09 May 2008 22:41
Forum: Cave Radio & Electronics
Topic: Spare set of HeyPhone boards available
Replies: 1
Views: 11530

Spare set of HeyPhone boards available

wolfgang zillig has emailed me saying... >I have one set of Heyphone PCBs that I don't need. If you know somebody >who is interested in, just forward my email address or mail me the >postal address so that I can post them. I wont post his email address here without his permission but, if anyone want...
by David Gibson
Wed 12 Mar 2008 11:15
Forum: BCA
Topic: BCA Handbook - Updates
Replies: 13
Views: 33810

Re: Further Updates

I have just finished the latest updates to the BCA Handbook. The up-to-date Version 1.4 can be downloaded from here . Please continue to let me know of errors or amendments for this or the 2008-9 Edition via handbook @ british-caving.org.uk (removing the spaces). Damian, For 2008-9 there are rather...
by David Gibson
Wed 12 Mar 2008 10:27
Forum: Cave Radio & Electronics
Topic: PCB stock update and HeyPhone web site
Replies: 1
Views: 12248

CREG now has zero stock of HeyPhone PCBs. We do not intend to re-stock.
by David Gibson
Mon 22 Oct 2007 09:35
Forum: Cave Radio & Electronics
Topic: PCB stock update and HeyPhone web site
Replies: 1
Views: 12248

PCB stock update and HeyPhone web site

CREG now has only two sets of HeyPhone PCBs left, and zero stock of Pease beacons. We are not going to re-stock with either. PCB artwork for the HeyPhone is on the HeyPhone web site http://heyphone.org.uk For the Pease beacon, please contact Brian Pease (e.g. via http://bcra.org.uk/creg/ )
by David Gibson
Fri 24 Aug 2007 12:24
Forum: Hidden Earth - The National Caving Conference
Topic: Lecture Secretary - change of phone number
Replies: 0
Views: 11491

Lecture Secretary - change of phone number

The Hidden Earth lecture secretary is in the process of moving house. As a result, the telephone number given on the Hidden Earth flyer and her *personal* email address no longer work. She can still be contacted using the official email address mailto:lectures@hidden-earth.org.uk and any postal mail...
by David Gibson
Sat 02 Jun 2007 15:13
Forum: Cave Radio & Electronics
Topic: PCB stock
Replies: 13
Views: 41215

by David Gibson
Wed 16 May 2007 17:59
Forum: Ghar Parau Foundation
Topic: GPF's Website
Replies: 4
Views: 24622

Why doesn't http://www.gharparau.org.uk work as well? That's the first instance Ive come across of someone has laudably set the DNS to accept a URL without a WWW, but who has not also allowed for the possibility of someone typing the WWW bit. Over to Wookey, I think? David Gibson Campaign for the E...
by David Gibson
Mon 30 Apr 2007 09:27
Forum: Cave Radio & Electronics
Topic: DQ Radio-location PCBs
Replies: 0
Views: 12172

DQ Radio-location PCBs

This message appeared recently on the Speleonics list... Date: Fri, 27 Apr 2007 08:59:56 -0400 From: Brian Pease <bpease2@verizon.net> To: speleonics@altadena.net Subject: [Speleonics] "DQ" Radiolocation PC Boards Again Available When a friend needed 2 boards for my venerable "Double-Quadrature" 349...
by David Gibson
Tue 17 Apr 2007 11:17
Forum: Cave Radio & Electronics
Topic: PCB stock
Replies: 13
Views: 41215

Re: HeyPhone PCB artwork

Nobody knows where the original artwork has disappeared to( APOLOGIES!!! That mesage was not from Rob Gill. It was from me. I accidentally clicked on "edit" instead of "quote" when replying to Rob's message and it seems that I have the power to edit people's posts :-) Rob: do you want to repost you...
by David Gibson
Wed 28 Mar 2007 18:49
Forum: Cave Radio & Electronics
Topic: Corrections to HeyPhone documentation
Replies: 1
Views: 14533

Re: Corrections to HeyPhone documentation

Aha! I have finally located the note from John Hey on the PCB mod...

On the top of the transmitter board, there is a track which fuses with a
plated through hole which it shouldn't. John usually clears it with a sharp drill before shipping the boards.
by David Gibson
Thu 01 Mar 2007 12:08
Forum: Cave Radio & Electronics
Topic: Corrections to HeyPhone documentation
Replies: 1
Views: 14533

Corrections to HeyPhone documentation

John Hey tells me...
There is a mistake is in the receiver theoretical drawing. The pot VR3 and C59 are shown going to the centre (4.5V) line whereas they connect to earth. The PC board is correct.
by David Gibson
Wed 28 Feb 2007 11:57
Forum: Cave Radio & Electronics
Topic: HeyPhone kit picking list
Replies: 0
Views: 13110

HeyPhone kit picking list

This snippet of information is not on the HeyPhone web site. John Rabson can provide a spreadsheet-based component list for the HeyPhone, showing suppliers' order codes, but he warns that it is a draft document that he wrote when building his own Heyphones some time ago. It is based on components av...
by David Gibson
Tue 20 Feb 2007 10:31
Forum: BCA
Topic: DIM versus CIM
Replies: 5
Views: 21716

Re: DIM versus CIM

A friend of mine, recently, received a membership renewal form for BCA/BCRA. He was a bit puzzled by this, since as a member of a caving club, he pays his sub to the BCA as part of his membership of the caving club (a CIM, in other words). He was further puzzled to note that as a CIM, he is unable ...
by David Gibson
Mon 19 Feb 2007 17:44
Forum: Cave Radio & Electronics
Topic: PCBs for Flashgun Slave Units
Replies: 0
Views: 12333

PCBs for Flashgun Slave Units

Not exactly anything to do with cave communications but, since I make the rules ... :roll:

After being out of stock for a while, I have ordered a new batch of PCBs for my flashgun slave unit (the standard version, not the digital-camera version). See http://caves.org.uk/flash/newsletter.html
by David Gibson
Mon 19 Feb 2007 17:41
Forum: Cave Radio & Electronics
Topic: PCB stock
Replies: 13
Views: 41215

Re: PCB stock

CREG currently has four sets of HeyPhone PCBs for sale, and one set of boards for the Pease beacon. That Pease beacon PCB has now been sold. As I understand it, the position is that Brian Pease is not getting any more boards made. The PCB design is locked into using a particular manufacturer. Brian...