Date   

Re: Interested in 28GHz , 32GHz Band or 40GHz ?

Peter Day <peter@...>
 

Ian Lamb wrote:
Peter, Consider any band you wish and tell us all .......... is there more or less activity on that band when there is a contest ?
I see where you are coming from on this and, of course, I agree with you there is always more activity on a band when there is a contest. This applies from 136kHz up to light! However, what I'm trying to say is that we shouldn't have to have a contest on a band to generate activity. I've long proposed ACTIVITY days rather than contests. In view of the fact that a small percentage of operators send in contest entries, at the end of a very full year of such events, it seems to me that most people come on for the contests merely to work stations for new squares, new DX, etc.

So why do we need the competitive element every time? Suppose we reduced the contests to say 1 or 2 per band per year and then filled the vacant slots with "Activity Days". Surely, the same non-competitive operators would, in theory at least, come on for the activity days as there would be just as much DX and as many squares available as in a contest.... and I say this as a dedicated contest operator! I would still go out portable in the non-competitive events. I don't usually do this for our present activity days as they are all scheduled for winter months. However, if there also such events from May to October you would still see me make the effort to go out to some remote spot, rare square, etc. It would, in fact, be much better for me as I wouldn't have the pressure of trying to work as many stations as possible in order to come high in the contest results. I'd be able to experiment "in the field" with different antenna feeds and transverters and spend a lot more time trying to work the really distant stations without having a time constraint.

I remember a couple of years ago working F1PYR/P (JN19BC) when I was /P in IO94MI. It's a long 600km+ path and it took almost 90 minutes of MS style calling and listening before a full CW exchange was made. Looking back it probably cost me four or five contacts in the contest! I came second place instead of first in the contest table that year, probably because I chose to get the DX contact instead of several UK ones.... quality before quantity. I got a real kick out of this first QSO with André and but it cost me! (These days we seem to work each other a lot more easily for some reason)

A few years ago, one March Sunday I think, I went out /P from JO03 square, with 10 and 5.7GHz. I worked almost as many stations, including several continentals, as I would have done had it been a contest event. The funny thing is that people gave me a serial number along with their report.... they had been conditioned by the contest syndrome!

The sheer number of microwave contests have, in my view, corrupted the ethos of experimentation we used to have in the "old days". I notice that quite a lot of operators come on the bands for a few years and then give up after they have "been there, done that and got the T shirt". Going to the same portable location year after year to work virtually the same paths and stations as before leads to boredom. Over the past years we have lost people like G3JVL, G3WDG, G4FCD, G3GNR, G0HNW and many others who have simply got fed up with the contest scene and have moved onto to other ("higher"?) things such as EME, Hill walking, model engineering, etc :-) I've only kept my own enthusiasm by deliberately chosing a different location for each event and I'm now at the stage where I'm seriously considering not to go out much at all next year if all it's going to be is a repetition of what I have done before. I might very well concentrate on the millimetre bands and even spend a lot more time with lasers! There is new ground to be broken there.

We need something injected into our microwaves to keep people continually interested. Hence my support for the three new possible allocations shown in this posting's header. These bands would attract the experimenter rather than the contester. Some very interesting work would be done, I'm sure, free of the fetters of the rubber stamp QSO "ur RST 589 005 in IO90XX" etc..

Don't get me wrong... I'm not advocating the abolition of all microwave contests, far from it, but I do think we have too many of them at present. I think they have led to rubber stamp QSOs, not as bad as the HF bands but we're getting close!

Pure activity days could be all band affairs or groups of bands. You take out what you want and be satisfied with fewer QSOs .... quality not quantity. You would also be able to start earlier in the day and stay out later if you wished, or pack up early and go home to be sociable with the wife and kids. It would also remove my personal misgivings about using KST during contests! ;-) In an activity day you could use all the KST you want as no one is disadvantaged.

Just a thought... why is activity so low on the scheduled UK weekly activity night ... Monday?

That's a long post but I needed that!

73

Peter, G3PHO



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RSGB

Mr. Ian Lamb <ianlamb@...>
 

I also begrudge paying a subscription to what is essentially a
commercial publishing operation masquerading as a body
representing my hobby interests.

But then I have no choice because to enter RSGB contests I
have to be a member - otherwise I would not be.

73 .. Ian

G8KQW

________________________________

From: ukmicrowaves@yahoogroups.com on behalf of Clive Jenner
Sent: Thu 27/10/2005 15:08
To: ukmicrowaves@yahoogroups.com
Subject: Re: [ukmicrowaves] Getting the message over...


But what representation would you have if there was no RSGB?

73 Clive G0PPO

Chris Bartram wrote:

One thing we could do - which would cost UKuG very little - would be to
archive 'Scatterpoint' on the Web, perhaps with a six or twelve month
delay
to discourage freeloaders. If Sam was then able to put a regular link
in his
Radcom column, this might be a means of interesting new 'recruits'...

As far as RSGB is concerned, I had my yearly internal debate about
renewing my
sub. recently. I did, but I have serious concerns about paying a
subscription
to what is essentially a commercial publishing operation masquerading
as a
body representing my hobby interests.

73

Chris
GW4DGU




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Re: Getting the message over...

Chris Bartram <yahoo@...>
 

On Thursday 27 October 2005 15:08, Clive Jenner wrote:
But what representation would you have if there was no RSGB?

73 Clive G0PPO
Which is why I renewed my subscription again.

As it stands, RSGB is a very imperfect representative body, but there is no
real alternative. Unfortunately, I don't have the reserves of time, energy or
ego to do anything about it. So I guess I get what I deserve.

FWIW, if I had the energy, I'd be trying to separate the Society's
representative function from the commercial function, possibly by
spinning-off the publishing company as a management buy-out. Unfortunately, I
suspect that shorn of the subscription base, the publishing company wouldn't
be viable in its current form.

73

Chris
GW4DGU


Re: Getting the message over...

Peter Day <peter@...>
 

Chris Bartram wrote:
One thing we could do - which would cost UKuG very little - would be to archive 'Scatterpoint' on the Web, perhaps with a six or twelve month delay to discourage freeloaders. If Sam was then able to put a regular link in his Radcom column, this might be a means of interesting new 'recruits'...

We (UKuG) actually do have a web archive Chris. Martyn, G0CZD, keeps it and we use it for those people who have problems donwloading the emailed Scatterpoints. hence the URL is confidential at the moment.

However I agree very much with your idea of allowing access to it after say
12 months. I would prefer a little longer (say 18 to 24 months) as I think we would even get freeloaders after a year! There's also the possibility of putting a year's Scatterpoints onto a CD.... no problem here as I keep the original PDF files (at high res print quality) archived and backed up.

The committee have also been discussing the idea of eventually publishing a compendium of past Scatterpoint technical articles. I have all these and the past 25 years of RSGB Microwave Newsletters on file so it would be quite easy to do this. We really need some indication from UKuG Membership as to the sort of demand for such a publication.

Other ideas we have discussed over past months include a series of pamphlets or monographs ... eg: "How to get started on 24GHz", "How to build a 10GHz transverter", "How to set up a home microwave station", "Operating portable", etc.

As far as RSGB is concerned, I had my yearly internal debate about renewing my sub. recently. I did, but I have serious concerns about paying a subscription to what is essentially a commercial publishing operation masquerading as a body representing my hobby interests.
Well I continue to stick in there in the hope that things might improve, It's the only National Society we have. Desert it and we have no representation left at all. It's a bit like supporting Sheffield Wednesday!
Through thick and thin ... we might win!


Peter, G3PHO



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Re: Getting the message over...

Clive Jenner <clive.jenner@...>
 

But what representation would you have if there was no RSGB?

73 Clive G0PPO

Chris Bartram wrote:

One thing we could do - which would cost UKuG very little - would be to
archive 'Scatterpoint' on the Web, perhaps with a six or twelve month delay
to discourage freeloaders. If Sam was then able to put a regular link in his
Radcom column, this might be a means of interesting new 'recruits'...

As far as RSGB is concerned, I had my yearly internal debate about renewing my
sub. recently. I did, but I have serious concerns about paying a subscription
to what is essentially a commercial publishing operation masquerading as a
body representing my hobby interests.

73

Chris
GW4DGU




SPONSORED LINKS
Hobby and craft supply <http://groups.yahoo.com/gads?t=ms&k=Hobby+and+craft+supply&w1=Hobby+and+craft+supply&w2=Craft+hobby&w3=Hobbies+and+crafts&w4=Ham+radio&c=4&s=84&.sig=Sz5ebNg-ZsVyHTzaR4PnAg> Craft hobby <http://groups.yahoo.com/gads?t=ms&k=Craft+hobby&w1=Hobby+and+craft+supply&w2=Craft+hobby&w3=Hobbies+and+crafts&w4=Ham+radio&c=4&s=84&.sig=_8V4kQCK4PEN_MzUUBx-hQ> Hobbies and crafts <http://groups.yahoo.com/gads?t=ms&k=Hobbies+and+crafts&w1=Hobby+and+craft+supply&w2=Craft+hobby&w3=Hobbies+and+crafts&w4=Ham+radio&c=4&s=84&.sig=J-__6L1W_lZQ58dekNdHLA>
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Re: 23 and 3 cm fm F9OE/P IN78

cricri
 

I beg your pardon !
It was a mistake !!!
 
I am ready on 5,7 (8W / 80cm) ; 10 ( 5W / 75cm ) and 24 (0.4 W / 45cm) GHz
 
Qra Loc : JN03RX
 
Christian / F1VL
 

----- Original Message -----
From: Cricri
Sent: Thursday, October 27, 2005 2:52 PM
Subject: Re: [ukmicrowaves] 23 and 3 cm fm F9OE/P IN78

>>>>>>Est-ce que tu penses à Fernande ?
Bien sûr puisque c'est ma soeur !!!!!!
Elle a juste 18 ans de plus que moi !
 
A+
 
Christian
 
----- Original Message -----
From: f9oe
Sent: Thursday, October 27, 2005 2:13 PM
Subject: [ukmicrowaves] 23 and 3 cm fm F9OE/P IN78

I'm ready on 23 cm (15 W / 23 el.) and 3 cm (150 mW/ dish 48 cm) from
IN78QG.I'm retired ... sked possible !
DX G3XDY on 23 cm and G4ALY on 3 cm.
73 fm F9OE/P Brittany.




Re: 23 and 3 cm fm F9OE/P IN78

cricri
 

>>>>>>Est-ce que tu penses à Fernande ?
Bien sûr puisque c'est ma soeur !!!!!!
Elle a juste 18 ans de plus que moi !
 
A+
 
Christian
 

----- Original Message -----
From: f9oe
Sent: Thursday, October 27, 2005 2:13 PM
Subject: [ukmicrowaves] 23 and 3 cm fm F9OE/P IN78

I'm ready on 23 cm (15 W / 23 el.) and 3 cm (150 mW/ dish 48 cm) from
IN78QG.I'm retired ... sked possible !
DX G3XDY on 23 cm and G4ALY on 3 cm.
73 fm F9OE/P Brittany.




23 and 3 cm fm F9OE/P IN78

f9oe <F9oe@...>
 

I'm ready on 23 cm (15 W / 23 el.) and 3 cm (150 mW/ dish 48 cm) from
IN78QG.I'm retired ... sked possible !
DX G3XDY on 23 cm and G4ALY on 3 cm.
73 fm F9OE/P Brittany.


DMC DXR700

Chris Bartram <yahoo@...>
 

Further to my post last night, Simon, ZL1SWW, has added quite a lot of info to
his web site <www.qsl.net/zl1sww> regarding the DXR700. This includes
sequencer/controller boards and programmed chips, as well as info on
modifying the VCO to cover 5616MHz, and using a common 10MHz VCTCXO.

73

Chris
GW4DGU


Contests

Mr. Ian Lamb <ianlamb@...>
 

Reg,

How can you suggest that contests do not increase activity?

Please give an example of a microwave contest that hasn't created an increase in activity level over the norm?

-> it looks like Peter PHO avoided answering that question yesterday.

73 .. Ian
G8KQW

________________________________

From: ukmicrowaves@yahoogroups.com on behalf of regwoolley@aol.com
Sent: Wed 26/10/2005 23:22
To: ukmicrowaves@yahoogroups.com
Subject: Re: [ukmicrowaves] Interested in 28GHz , 32GHz Band or 40GHz ?


I Truly am now of the opinion there are far to many contests. They do not increase activity but spread what we have more thinly. I think the same would be true to add more bands. Come on lets face it how many are there qrv above 10ghz? The answer I know is Tens at the most. There may be a few more with gear but not active so they dont count! In a message dated
Reg G8VHI

26/10/2005 23:06:56 GMT Standard Time, mikeg3pfr@aol.com writes:


In a message dated 26/10/2005 17:51:01 GMT Daylight Time, peter@g3pho.free-online.co.uk writes:

I would hope the "new" bands would not become dominated by the contest
syndrome ... we dont need more contests!


Here, here!

de Mike, G3PFR

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________________________________


WTB: Mesh dish 1.5M or so

G0RUZ Conrad <conrad@...>
 

Before I send some money to PA4FP has anyone got a mesh dish that they are
willing to part with. Diameter 1.5-2M, f/D between 0.4 and 0.6.

I want to be QRV for the 23, 13 and 9cms contest if at all possible.

73

Conrad G0RUZ


Re: HP 10811-60111 info

G0RUZ Conrad <conrad@...>
 

Thanks Brian that would be very helpful.

Conrad G0RUZ

-----Original Message-----
From: ukmicrowaves@yahoogroups.com
[mailto:ukmicrowaves@yahoogroups.com] On Behalf Of Brian W Flynn
Sent: 27 October 2005 08:58
To: ukmicrowaves@yahoogroups.com
Subject: Re: [ukmicrowaves] HP 10811-60111 info

G0RUZ Conrad wrote:
Hello I recently purchased an HP 10811-60111 OXCO from eBay
and would
like to commence work on locking it to GPS. I have a CT1DMK
gen-lock
board from John G8ACE and I would like to find a suitable
GPS RX. Do
they all output 1 pps and if so how lock does it take to
achieve stability in practice?

The HP OCXO came on a board marked D42903F 05328-20027 does anyone
have details of this board or at least the connections for the edge
connector? I hope to build a nice reliable 10 MHz source
and then lock
all my transverter local oscillators to this. When the
crystals arrive
I should have OCXOs for
13 and 3cms to start with.

73

Conrad G0RUZ



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--
I got one of these PCBs + OCXO recently. It is for an HP counter.
Details are in the manual. I have it as a PDF. Iwill dig it
out and send it when I get a minute. The counter is the 5328
as per the part number of the PCB.

73s

Brian.
GM8BJF

--
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15 Riselaw Crescent
Edinburgh EH10 6HN

Email brian.flynn@tiscali.co.uk

Phone (44) 0131 447 4043




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Re: Interested in 28GHz , 32GHz Band or 40GHz ?

Chris G8BKE
 

A 2Mhz slot in each band would be useful for narrowband
propagation experiments, if neeeds be under an NoV similar to the
current 5Mhz arrangements. Lets go for it Murray!

73 de Chris G8BKE


--- In ukmicrowaves@yahoogroups.com, "Murray Niman" <mjniman@i...>
wrote:

Going back to the Spring, Ofcoms Spectrum implementation plan had the
prospects of the following bands being available

28GHz (28.0525-29.4525GHz),
32GHz (31.8-33.1GHz), and
40GHz (40.5-43.5GHz)


Re: HP 10811-60111 info

Brian Flynn GM8BJF
 

G0RUZ Conrad wrote:
Hello I recently purchased an HP 10811-60111 OXCO from eBay and would like
to commence work on locking it to GPS. I have a CT1DMK gen-lock board from
John G8ACE and I would like to find a suitable GPS RX. Do they all output 1
pps and if so how lock does it take to achieve stability in practice?
The HP OCXO came on a board marked D42903F 05328-20027 does anyone have
details of this board or at least the connections for the edge connector? I
hope to build a nice reliable 10 MHz source and then lock all my transverter
local oscillators to this. When the crystals arrive I should have OCXOs for
13 and 3cms to start with.
73
Conrad G0RUZ
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I got one of these PCBs + OCXO recently. It is for an HP counter. Details are in the manual. I have it as a PDF. Iwill dig it out and send it when I get a minute. The counter is the 5328 as per the part number of the PCB.

73s

Brian.
GM8BJF

--
Dr Brian W Flynn
15 Riselaw Crescent
Edinburgh EH10 6HN

Email brian.flynn@tiscali.co.uk

Phone (44) 0131 447 4043


Re: Interested in 28GHz , 32GHz Band or 40GHz ?

mikeg3pfr@...
 

In a message dated 27/10/2005 09:41:43 GMT Daylight Time, eightgoes@... writes:
A 2Mhz slot in each band would be useful for narrowband
propagation experiments,  if neeeds be under an NoV similar to the
current  5Mhz  arrangements. Lets go for it Murray!
Yes. I'd go with that one!
73 de Mike, G3PFR


Excellent basis for 6cm transverter...

Chris Bartram <yahoo@...>
 

The DMC DXR700 transverters currently available for NZ$30 on the Wellington
(NZ) VHF group surplus list <www.vhf.org.nz/tradingtable/mwave6.pdf> look as
though they'll make a VERY good basis for a high performance transverter (or
beacon) for 6cm. These are modern devices (I guess designed in about 1998)
and the quality of assembly is extremely high. In my case, I'm also planning
to set-up one of these units as the front-end of a spectrometer for the
6888MHz ethanol masers, which are amongst the strongest extra-solar sources
in the sky (until they get blatted by UWB...)

I ordered a couple of these units from Leon ZL2AOC <Leon Toorenburg
<leon.toorenburg@survey-lab.com> who seems to act as the manager for the
Wellington group's surplus 'operation'. They arrived yesterday, along with a
couple of PAs within a few days of payment. There are my initial comments.

The unit consists of independent transmit upconverter and receive
downconverter pcbs housed in a very solid diecast chassis.

Both pcbs employ a very similar synthesised oscillator operating in the 2GHz
region, and have an inbuilt 10MHz VCTCXO. This should be good enough for
casual operation, and would be easy to lock to an external reference if
you're trying to do something more complex. My guess is that with suitable
choice of reference frequency, the close-in spectrum will be good enough for
any usual amateur application. The microwave VCO employs a dual resonator,
which should give reasonable phase noise beyond the loop bandwidth. The
synthesiser controller is a LMX2326, integer-N device in TSSOP, which is
still current.

The receive strip has an isolator on the input, which is followed by a
two-stage FET amplifier. A two-phase downconverter rejects image noise from
the amplifier. A directly coupled quadrature hybrid drives a pair of Hittite
mixers. A quick bit of reverse engineering of the input hybrid suggests that
it's usable from about 5.5 - 7.5GHz. The output hybrid of the downconverter
is a 50 - 100MHz packaged device, which for a 144MHz if could be easily
replaced by, say, a 100 - 200MHz hybrid from Mini-Circuits, or a discrete
component hybrid.

On transmit, there is a single mixer, followed by a voltage variable
attenuator. A three stage FET amplifier looks as though it will produce
around 50 - 100mW.

To get the system working, there may need to be a little bit of snowflaking,
but probably not a lot. (Famous last words?!!) A means of programming the
synthesisers will be needed. That's a relatively simple job for a PIC or
Atmel microcontroller, which could probably handle the T/R sequencing as
well. There's space in the package for a controller PCB.

The transverter will require external filtering on the receive input/transmit
outputs. I think that the Wellington Group have suitable filters in their
catalogue...

I'm currently tracing the circuits. Don't expect this to be a one-evening
process! Once I'm happy, I'll put PDFs in the files section of the
ukmicrowaves site. There's also a group of guys in NZ working on this.
<www.zl1sww.qsl.net>

For the money, these units seem to represent a way to get on 6cm with a
potentially high performance transverter. I'll keep people informed of my
progress.

Vy 73

Chris
GW4DGU


SSETI Express raised and ready to fly

Trevor M5AKA <TrevorM5aka@...>
 


Re: Excellent basis for 6cm transverter...

mikeg3pfr@...
 

Tnx, Chris, I'm very interested!
 
73 de Mike, G3PFR


Re: HP 10811-60111 info

G0RUZ Conrad <conrad@...>
 

I of course meant how long does it take to achieve lock in practice?

Conrad

-----Original Message-----
From: ukmicrowaves@yahoogroups.com
[mailto:ukmicrowaves@yahoogroups.com] On Behalf Of G0RUZ Conrad
Sent: 26 October 2005 19:31
To: ukmicrowaves@yahoogroups.com
Subject: [ukmicrowaves] HP 10811-60111 info

Hello I recently purchased an HP 10811-60111 OXCO from eBay
and would like to commence work on locking it to GPS. I have
a CT1DMK gen-lock board from John G8ACE and I would like to
find a suitable GPS RX. Do they all output 1 pps and if so
how lock does it take to achieve stability in practice?

The HP OCXO came on a board marked D42903F 05328-20027 does
anyone have details of this board or at least the connections
for the edge connector? I hope to build a nice reliable 10
MHz source and then lock all my transverter local oscillators
to this. When the crystals arrive I should have OCXOs for
13 and 3cms to start with.

73

Conrad G0RUZ




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HP 10811-60111 info

G0RUZ Conrad <conrad@...>
 

Hello I recently purchased an HP 10811-60111 OXCO from eBay and would like
to commence work on locking it to GPS. I have a CT1DMK gen-lock board from
John G8ACE and I would like to find a suitable GPS RX. Do they all output 1
pps and if so how lock does it take to achieve stability in practice?

The HP OCXO came on a board marked D42903F 05328-20027 does anyone have
details of this board or at least the connections for the edge connector? I
hope to build a nice reliable 10 MHz source and then lock all my transverter
local oscillators to this. When the crystals arrive I should have OCXOs for
13 and 3cms to start with.

73

Conrad G0RUZ