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Re: microwave workshops
Chris G8BKE
Surely its a means to an end Andy...if dropping in a more dB's of power or antenna gain or a
toggle quoted messageShow quoted text
few less in NF suffices to make the contact then there is little incentive to try a different mode? Maybe we should have contests where SSB and CW is strictly forbidden and maximum power is 100mW? C
The LF community have made more technical advances in the last decade - with
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Re: Digital modes on microwaves
Dave <dave.g0dja@...>
JOHN RANDALL wrote:
I meant psk modes like hellschreiber ( my favourite ) and bpsk.....OK, well I'd like to use analogue digital modes, when I get the transverters sorted out, as well. However, I'd quite like to try digital voice modes as well. I'm seriously considering trying to get some Icom radios, preferably 1.2GHz, with D-Star modules fitted, but that would divert savings that I'm hoping to use for transverters. I read an article by G4GUO and G4JNT (now, where have I seen that callsign lately? ;-) ) about designing and building a digital voice modem and now AOR are marketing one, although it costs about 170 plus P&P in the UK. Is it possible to send digital voice from a PC, I wonder? If so, I could use VAC to send audio to my SDR1000 and then onto the transverters. The D-Star idea looks interesting, in that it allows for data as well as voice transmissions. I am guessing that not many people will have D-Star in the UK yet? Dave (G0DJA)
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Re: Digital modes on microwaves
JOHN RANDALL <m0els@...>
I meant psk modes like hellschreiber ( my favourite ) and bpsk..... John Dave wrote:
All new Yahoo! Mail "The new Interface is stunning in its simplicity and ease of use." - PC Magazine
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Digital modes on microwaves
Dave <dave.g0dja@...>
JOHN RANDALL wrote:
which is why I am gearing up for digital modes....I have already made up a pcb and must just connect the cables to the serial port + rig and off I go.When you say 'digital' John, do you mean really digital such as HAMDRM/WinDRM and D-Star, or PSK modes? I wonder what the design of the PCB is, and what modes are you planning on using?
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Re: microwave workshops
JOHN RANDALL <m0els@...>
which is why I am gearing up for digital modes....I have already made up a pcb and must just connect the cables to the serial port + rig and off I go. I think digital modes are an excellent source of comms over microwave freqs...... John Talbot Andrew wrote:
Send instant messages to your online friends http://uk.messenger.yahoo.com
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Not really microwaves but looking for info on TLNA 432S
Eddie G0EHV
Hi,
Not really microwaves but hope one of the group can help with any info on the Mutek 70 cms pre-amp please? Model number is TLNA 432s, I'd love a diagram or any info anyone has. My mate Google didn't have any info! Regards, Eddie G0EHV
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Re: microwave workshops
Talbot Andrew <actalbot@...>
We'd get microwaves wider known to people who count outside
if we published more - technical articles, propagation; things we've
done. How many users of the higher bands know microwaves reliably
travel beyond teh horizon - we're the one in a position to tell
them.
Just getting more operators on the bands shows we're just a
bunch of ...well... amateurs, just playing about with radio at weekends.
And judging by the content of RadComic (apart from a couple of notable
exceptions recently) that's pretty well the impression anyone would get reading
it.
The LF
community have made more technical advances in the last decade - with some
respected work in the professional field too - than have
microwaves. Where are we on spread spectrum,
spectrum reuse, weak signal modes, coding etc. Thre's a few
individuals pushing things, but they're mostly pros anyway.
Instead, we just just bang on using linear modulation
in narrow channels.
Andy
G4JNT
From: ukmicrowaves@... [mailto:ukmicrowaves@...] On Behalf Of JOHN RANDALL Sent: 19 December 2006 10:35 To: ukmicrowaves@... Subject: RE: [ukmicrowaves] microwave workshops
Ofcourse it will not be limited to badges and cd's only......Its the idea
thats important.
The rsgb iniative is very successful, judging by the reports.
I think it will work very well and could be a major breakthrough in getting
microwaves known to a wider audience.
Sitting back and pondering is not an option now days, as many proffessional
people are warning of the possibility of bands being seized, through lack of
usage and auctioned off.
John
Talbot Andrew dstl.gov.
Try the all-new Yahoo! Mail . "The New Version is radically easier to use" – The Wall Street Journal "The Information contained in this E-Mail and any
subsequent correspondence"
"is private and is intended solely for the intended recipient(s)." "For those other than the recipient any disclosure, copying, distribution, " "or any action taken or omitted to be taken in reliance on such information is" "prohibited and may be unlawful."
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Re: microwave workshops
JOHN RANDALL <m0els@...>
Ofcourse it will not be limited to badges and cd's only......Its the idea thats important. The rsgb iniative is very successful, judging by the reports. I think it will work very well and could be a major breakthrough in getting microwaves known to a wider audience. Sitting back and pondering is not an option now days, as many proffessional people are warning of the possibility of bands being seized, through lack of usage and auctioned off. John Talbot Andrew wrote:
Try the all-new Yahoo! Mail . "The New Version is radically easier to use" The Wall Street Journal
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Re: microwave workshops
Talbot Andrew <actalbot@...>
That's an awful lot of CD's and badges to finance tax /
insurance / maintenance / fuel / depreciation...
Andy G4JNT
From: ukmicrowaves@... [mailto:ukmicrowaves@...] On Behalf Of JOHN RANDALL Sent: 19 December 2006 08:30 To: ukmicrowaves@... Subject: Re: [ukmicrowaves] microwave workshops
I think UKMG should look into purchasing a camper van, kit it out and
then take it out on the road. The camper van will serve two purposes...one to
house the equipment and the other as a mobile home....while away from home and
will incl items for sale such as cd's, badges etc to help finance the
diesel/petrol and boost funds.
The camper van can be "hired" from UKMG by arc clubs for a weekend by
competent people and this way UKMG does not really have to have someone on duty
all the time.
73
John
Ian Lamb com> wrote:
All new Yahoo! Mail "The new Interface is stunning in its simplicity and ease of use." - PC Magazine "The Information contained in this E-Mail and any
subsequent correspondence"
"is private and is intended solely for the intended recipient(s)." "For those other than the recipient any disclosure, copying, distribution, " "or any action taken or omitted to be taken in reliance on such information is" "prohibited and may be unlawful."
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Re: microwave workshops
JOHN RANDALL <m0els@...>
I think UKMG should look into purchasing a camper van, kit it out and then take it out on the road. The camper van will serve two purposes...one to house the equipment and the other as a mobile home....while away from home and will incl items for sale such as cd's, badges etc to help finance the diesel/petrol and boost funds. The camper van can be "hired" from UKMG by arc clubs for a weekend by competent people and this way UKMG does not really have to have someone on duty all the time. 73 John Ian Lamb wrote:
All new Yahoo! Mail "The new Interface is stunning in its simplicity and ease of use." - PC Magazine
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Re: microwave workshops
mikeg3pfr@...
In a message dated 19/12/2006 11:14:00 GMT Standard Time, m0els@...
writes:
That is a distinct possibility!
Regards, Mike, G3PFR
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microwave workshops
Ian Lamb <ianlamb@...>
John
Regarding your post below - what are you proposing then? // Ian I think the capture area should shoulbe be enlarged as much as possible, within budget etc. If an arc wants to hold a microwave workshop, but does not have the skills to put on speakers, then those of us who have some knowledge can step in and cover that meeting. Its all good and well hosing workshops in major centres.....or major concentration of supporters, but we need to inplement a similar strategy to the rsgb "travelling circus"........It does work and the results are impressive. Many people dont have transport in the London area and train travelling nowdays is not an option. 73 John .
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Re: microwave workshops
GM6VXB
So really all the events have been held in the
south.
Any chance of one in the north.
Martin.
IO97aq87
Aberdeenshire.
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Re: microwave workshops
JOHN RANDALL <m0els@...>
Dave, I think the ukmg are looking into producing cd's/dvd's in the future, which would contain a wealth of information....I am not sure how far the planning is for this. The amount of information out there must be staggering and would need assimilation into modules or subjects..... John Dave wrote:
Send instant messages to your online friends http://uk.messenger.yahoo.com
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10 GHz PA
Keith Le Boutillier
Hi Group
http://mwrf.texterity.com/mwrf/200612/
The link above gives detail of a new GaN FET producing 81.3 Watts at 9.5 GHz and lower powers at higher frequencies 10 GHz PA? Anyone know the cost?
Seasons Greetings
Keith GU6EFB
--
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Re: G3JVL waveguide filters
Jules G0NZO
Mike,
I recon that 2.4mtr one that I had from you at the RAL meet would do nicely! Now where did I put that box of magentrons? I was going to start doing some repairs to that this evening, but B&Q are out of argon welding gas. Odd things you end up doing, and I thought this was a radio hobby?! BTW, you mentioned somewhere that did hardware cloth/expanded ali mesh, could you remind me where. Jules Posted by: "Willis, MJ (Michael)" m.j.willis@rl.ac.uk g0mjw Mon Dec 18, 2006 5:57 am (PST) I remember the article on how to make an ATV transmitter using a microwave oven. There was some mention of avoiding RF exposure. Would a microwave at the focus of a 3m dish form the ultimate solution to the spurious emissions from rogue WLAN devices? Anyone looking for a 3m dish? Mike
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Re: microwave workshops
Dave <dave.g0dja@...>
JOHN RANDALL wrote:
I think one is never to old to learn new tricks in microwaves and that many hard core ukmg members could learn a thing or two from these workshops...hi hi.I've thought about going, as all of my microwaving was a good few years ago now, but I'm put off by the 'Experienced people on the bands stay away so that newcomers can attend' advertisments and the suggestion that only people who have never used the bands will benefit. So, I don't want to take up a place that someone else might benefit from and I don't want to go to be told that, as I've used a couple of bands in the past, that I wont be welcome. Will the CD from the upcoming event in Telford be made more widely available, please? I would pay the P&P and costs of producing one, and it may bring me a bit more up to date without feeling that I'd taken a place that should have gone to someone else. Cheers - Dave (G0DJA)
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Re: G3JVL waveguide filters
Michael Scott
Paul
I made a slotted line for 2.4 Ghz using 2x4
aluminium box section which is a stock size and it worked well. You could
probably use this for your filter, but as Andy says, it is big!.
I also made the interdigital filter for 2.3 GHz
from the Microwave H/B, which was based on a design from VHF Communications from
many years ago, and it worked very well when tested at Martlesham R/T two years
ago. You would probably need to add a mm or so to the elements for
2.2GHz.
73, Mike, G3LYP.
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Re: microwave workshops
JOHN RANDALL <m0els@...>
I think the capture area should shoulbe be enlarged as much as possible, within budget etc. If an arc wants to hold a microwave workshop, but does not have the skills to put on speakers, then those of us who have some knowledge can step in and cover that meeting. Its all good and well hosing workshops in major centres.....or major concentration of supporters, but we need to inplement a similar strategy to the rsgb "travelling circus"........It does work and the results are impressive. Many people dont have transport in the London area and train travelling nowdays is not an option. 73 John Geoff Blake wrote:
Try the all-new Yahoo! Mail . "The New Version is radically easier to use" The Wall Street Journal
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Re: microwave workshops
Geoff Blake <geoff@...>
On Mon, 18 Dec 2006 regwoolley@aol.com wrote:
I know some travelled from around here to Sheffield to attend a workshop.Reg, You have to bear in mind that some of those from the South-East are in the deep mire when they get north of the 51st parallel. Outside the M25 and they are really lost. Of course, the available dates can be a problem - like Martlesham falling on a 'family occasion' weekend. I have managed to escape only one day over the past four years. Geoff -- Geoff Blake G8GNZ located near Chelmsford, Essex, U.K. Please reply to: geoff (at) palaemon (dot) co (dot) uk Using Linux on Intel & Linux or NetBSD on Sun Sparc platforms Please avoid sending me Word or PowerPoint attachments. See <http://www.gnu.org/philosophy/no-word-attachments.html> ------------------------------------------------------------------------------ This E-mail and any attachment(s) are strictly confidential and is intended solely for the addressee(s). If you are not the intended recipient please notify <postmaster(at)palaemon.co.uk> and the sender by return and permanently delete the message. You may not disclose, forward or copy this E-mail or any of its attachments to any third party without the prior consent of the sender. ------------------------------------------------------------------------------
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