hams:projects
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
hams:projects [2015-02-12 00:01] – [Other Projects] caffeinep0wered | hams:projects [2015-03-22 15:14] – [Lab HF access] caffeinep0wered | ||
---|---|---|---|
Line 2: | Line 2: | ||
There are a number of projects in the pipeline relating to amateur radio; these will be updated as they progress. | 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 ===== | ===== Lab HF access ===== | ||
- | * Tim K brought in an endfed and hooked it up on the roof to be met with S9+40dB QRM (even with a -30dB attenuator) which may be TV equipment or CCFL related. Since the endfed uses the coax braid as a counterpoise, | + | Antennas tested thus far: |
- | * Failing this, there are a number of options for installing verticals or dipoles | + | |
- | * Verticals: no space for radials, although we may be able to " | + | * **PAR endfedz**(?): epic failure. Noise pickup like nothing else. Needs GOOD RF ground which we don' |
- | | + | * **40m inverted-V**: works well. |
- | * Are we allowed to run coax down the side of the building or does it need to be internally routed? We have ~20m of " | + | * **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 |
- | * **We need a lab rig** for folks who may not be willing or able to purchase a HF radio. Chris N is looking into buying a " | + | |
- | * **TK**: In terms of equipment | + | Coax drop options: |
- | * **TK**: I have an antenna tuner now which we could temporarily site on the roof (it’s battery powered). That would allow us to try a doublet on a few different bands and see what the noise level is like without significant SWR losses in the cable drop. We could also rig a vertical up using the earthing | + | |
- | * **TK**: We could build a linked dipole or fan dipole – I’ve got some dipole centres for this. I also now have a 1:1 current balun that should reduce | + | * [[http:// |
- | * **TK**: I was considering a longwire antenna may be a good solution as it run up to the roof with the balun on the bottom and a ground connection where the lightning rod connects to ground. That would minimise | + | * [[http://www.thedxshop.com/westflex-w103-per-metre.html|Westflex 103]] - air dielectric |
+ | * [[http://www.thedxshop.com/andrew-heliax/ | ||
+ | |||
+ | Rig options/ | ||
+ | |||
+ | ** HF ** | ||
+ | |||
+ | | ||
+ | * C: Here's an idea: having built a Softrock RXTX myself, an option | ||
+ | |||
+ | ** V/U ** | ||
+ | |||
+ | * ??? | ||
===== " | ===== " | ||
* 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. | * 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. | ||
- | * This is not uncharted territory; see [[http:// | + | * Not uncharted territory; see [[http:// |
- | * Clubs can then apply as a Registered Assessment centre and we would be able to administer exams/ | + | |
- | * Exam adjudicators and IPRA/FPRA assessors can be intermediate licencees but the overall assessor must be an Advanced licence holder, and be present for the practical exam. Two other adjudicators must be present for the exam itself. | + | |
- | * Cannot hold courses (but can hold exams) for u-18s unless DBS checks are done on all assessors. This probably won't be feasible. | + | |
If you are willing to volunteer yourself for inclusion on a potential future Hacklab ARC application please add yourself below. | If you are willing to volunteer yourself for inclusion on a potential future Hacklab ARC application please add yourself below. | ||
Line 32: | Line 43: | ||
===== Weekly Net ===== | ===== Weekly Net ===== | ||
- | GB3FF is sitting up there in Kelty all neglected and lonely and I suspect that unless it gets a bit more use, CSFMG might consider tearing it down. Therefore I think it's a good idea if we discuss the possibility of a regular weekly net at the next radio night (see below). | + | Chris will throw out a call Weds evenings |
- | + | ||
- | RAYNET hold their own net on 144.625 (simplex) with talkthroughs on 145.225 (Fairmilehead) and 144.775 (City Chambers) at 1900h every Sunday if you are unfamiliar with the way a net goes: although a potential Hacklab net will be much less formal than that. | + | |
===== "Radio Night" ===== | ===== "Radio Night" ===== | ||
- | The next Radio Night is looking like Thursday, | + | | Date | Theme | Comments | |
+ | |12/02|HF|40m dipole tested with great success and some DX was worked.| | ||
+ | |26/ | ||
+ | |12/03|2m Yagi Build|Built some excellent tape measure yagis based on the plans [[http:// | ||
===== Mini Maker Faire ===== | ===== Mini Maker Faire ===== | ||
Line 47: | Line 58: | ||
* [[sdr|SDR]] | * [[sdr|SDR]] | ||
- | * TX/RX APRS iGate (Raspberry Pi + DRA818V). | + | * RX/TX iGate - requires |
- | * **CN**: TX does [[https:// | + | * Repeater research |
- | * GB3ED is listed by ETCC as " | + | * WSPR/QRSS? |
- | * **CN**: further | + | |
- | * Tim K has constructed a fairly efficient copper pipe Jpole using leftover materials at home. It would appreciate a VHF SWR meter or antenna analyser for tuning but got access to various local repeaters from home that weren' | + | |
- | * Tim K would be keen to look into ARDF. CPSARC run two foxhunt a a year and with a full license allowing further unattended beacons a multi transmitter on foot challenge would be possible. Beacons and antennas make great construction projects and non hams can participate too as those taking part are only receiving the signal. | + | |
- | * **CN**: I've wanted to do a foxhunt on the Meadows for a long time. I have an old Baofeng UV-B5 on which the RX doesn' | + | |
- | * Elaborating on the above, [[http:// | + | |
- | * Regarding IDing the fox, the usual choice seems to be the [[http:// | + |
hams/projects.txt · Last modified: 2019-06-03 18:13 by tim