Differences

This shows you the differences between two versions of the page.

--- hams:projects [2015-03-27 16:17] – [Radio Night] tim
+++ hams:projects [2015-08-06 19:40] – [Hacklab ARC] jsm
@@ Line 2: / Line 2: @@
 There are a number of projects in the pipeline relating to amateur radio; these will be updated as they progress.
-C: I cleaned up this page massively as it was turning into a wall of text.
 ===== Lab HF access =====
@@ Line 9: / Line 7: @@
 Antennas tested thus far:
-  * **PAR endfedz**(?): epic failure. Noise pickup like nothing else. Needs GOOD RF ground which we don't have on the roof.
+  * TBD. Now we have a radio we can start looking at what Summerhall will let us install and what works best. Inv-V looking like the best option currently. It may be worth making a fan-IV to minimise matching losses.
-  * **40m inverted-V**: works well.
-  * **Magloop**: Chris has tested RX at the lab (for 10/11m). Works OK, even indoors, but easy to detune. Great for RDF and/or nulling out QRM.
 Coax drop options:
-  * [[http://timesmicrowave.com/cms/products/cables/lmr/|LMR 600/400]] - polythene dielectric
+  * TK is trying to arrange free cabling
-  * [[http://www.thedxshop.com/westflex-w103-per-metre.html|Westflex 103]] - air dielectric
+  * Paracord dropped in conduit ready for cables
-  * [[http://www.thedxshop.com/andrew-heliax/ldf4-50a-cables-connectors/andrew-heliax-ldf4-50a.html|Andrews Heliax LDF-4]] - often surplus available - lowest loss
-Rig options/ideas:
-** HF **
-  * Yaesu FT450
-  * C: Here's an idea: having built a Softrock RXTX myself, an option I have been considering is maybe doing something similar what is done with the SDR currently: feeding a Peaberry (basically a Softrock with integrated ADC/DAC) into a Raspberry Pi mounted amongst the existing SDR hardware and sticking a PA on the front of it. This has the advantage of being cheap - <£200 for the Peaberry, Pi and PA - and it would allow us to use existing network infrastructure since the actual RF hardware itself woud be on the roof. No messy coax runs: we coud just use the ethernet run that's already there. By using something like [[https://github.com/alexlee188/ghpsdr3-alex|ghpsdr3-alex]], we could remotely control the Peaberry/Softrock/whatever from the lab with DSPserver running on the Pi and QTradio on the computer(s) downstairs.
-** V/U **
+Rig:
-  * ???
+  * William W has donated a Yaesu 857D.
-===== "Hacklab ARC" =====
-  * Once three of us have Advanced licences, this opens up the possibility of the Hacklab obtaining a Full (Club) licence. Fee for this is £20 (club licences last 5 years) and a callsign of the form MM0xxx will be assigned to the Hacklab.
+===== Hacklab ARC =====
-  * Not uncharted territory; see [[http://qrz.com/db/m0hsl|M0HSL]] [[http://www.qrz.com/db/W3HAC|W3HAC]]
-If you are willing to volunteer yourself for inclusion on a potential future Hacklab ARC application please add yourself below.
-| Name | Callsign |
+  * Call MM0RHL.
-|Tim K| MM0TKE |
-|Chris N| 2M0FFY (sitting Full <del>in May June</del>soon) |
-|Alex H| 2M0LBH (still to sit exam)|
 ===== Weekly Net =====