Date   

Re: HP 10811-60111 info

David Wrigley <davidwrigley@...>
 

Hi Conrad

Just noticed your message - (I'm currently diverted with digital video)

I have an HP OCXO on a pcb with a similar number to the one you mention. I
can't see the whole number whilst it's assembled in the rack mounting case.

I have the card assy in my Brooks Shera system.
The card has a divider on it to give 1MHz output as well as 10MHz. I
remember having to change over the division ratio so that I could get a 5MHz
output from it to lock up my Adret. The card was originally wired to divide
by 5 and then by two, so I changed it too divide by two first. The OCXO is
noticeably better than the Toyocom that was originally in the HS400.

If you need the 5MHz facility, I could strip the card out and take some pics
of the mods. Let me know?

The time constant over which you average the error reading in the PLL is
related to accuracy you want to achieve against the speed of the lock. Bear
in mind that if your OCXO is drifting at all you cannot use a long time
constant in the PLL - it will simply lose control. I would recommend that
initially at least start off with quite a short time constant and let the
OCXO settle down - over a period of a week or so. Then you can start to
tighten up the control by lengthening the TC.

This hits on the real problem of using GPS for portable operations - to get
good accuracy it need some time to settle down. For practical purposes
however an hour may provide adequate stability, provided that the OCXO has
been kept powered up.

I have found a Rubidium standard quick and convenient for any tests I have
been conducting - it seems to get better than 1pp10^10 within a few minutes.

David G6GXK

-----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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Re: HP 10811-60111 info

Brian Flynn GM8BJF
 

Dear Conrad,

You can download the manual for the 5328A Frequency counter from

http://bama.edebris.com/manuals/hp/

If you look at page 175 (on Adobe Acrobat) you get the circuit and details
of the PCB
with the OCXO on it. I used the PCB and OCXO quite successfully in a Brookes
Shera setup.

I tried to email it to you but your ISP objected as it is quite big!

73s

Brian GM8BJF

-- Original Message --
To: <ukmicrowaves@yahoogroups.com>
From: "G0RUZ Conrad" <conrad@g0ruz.net>
Date: Thu, 27 Oct 2005 09:43:06 +0100
Subject: RE: [ukmicrowaves] HP 10811-60111 info
Reply-To: ukmicrowaves@yahoogroups.com


<html><body>


<tt>
Thanks Brian that would be very helpful.<BR>
<BR>
Conrad G0RUZ <BR>
<BR>
-----Original Message-----<BR>
From: ukmicrowaves@yahoogroups.com <BR>
[mailto:ukmicrowaves@yahoogroups.com] On Behalf Of Brian W Flynn<BR>
Sent: 27 October 2005 08:58<BR>
To: ukmicrowaves@yahoogroups.com<BR>
Subject: Re: [ukmicrowaves] HP 10811-60111 info<BR>
<BR>
G0RUZ Conrad wrote:<BR>
Hello I recently purchased an HP 10811-60111 OXCO from eBay <BR>
and would <BR>
like to commence work on locking it to GPS. I have a CT1DMK <BR>
gen-lock <BR>
board from John G8ACE and I would like to find a suitable <BR>
GPS RX. Do <BR>
they all output 1 pps and if so how lock does it take to <BR>
achieve stability in practice?<BR>
<BR>
The HP OCXO came on a board marked D42903F 05328-20027 does anyone
<BR>
have details of this board or at least the connections for the
edge <BR>
connector? I hope to build a nice reliable 10 MHz source <BR>
and then lock <BR>
all my transverter local oscillators to this. When the <BR>
crystals arrive <BR>
I should have OCXOs for<BR>
13 and 3cms to start with.<BR>
<BR>
73<BR>
<BR>
Conrad G0RUZ<BR>
<BR>
<BR>
<BR>
<BR>
----------------------------------------------------------------------<BR>
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----------------------------------------------------------------------<BR>
--<BR>
<BR>
<BR>
I got one of these PCBs + OCXO recently. It is for an HP counter. <BR>
Details are in the manual. I have it as a PDF. Iwill dig it <BR>
out and send it when I get a minute. The counter is the 5328 <BR>
as per the part number of the PCB.<BR>
<BR>
73s<BR>
<BR>
Brian.<BR>
GM8BJF<BR>
<BR>
--<BR>
Dr Brian W Flynn<BR>
15 Riselaw Crescent<BR>
Edinburgh EH10 6HN<BR>
<BR>
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Re: Interested in 28GHz , 32GHz Band or 40GHz ?

Martyn G3UKV
 

Re: microwave activity/chat
The 80m microwave nets continue. 3625 KHz, on Mondays, Wednesdays and Saturdays, from about 08:30 local time.
 
Why not join us?
 
73  Martyn G3UKV

----- Original Message -----
Sent: Thursday, October 27, 2005 10:06 PM
Subject: Re: [ukmicrowaves] Interested in 28GHz , 32GHz Band or 40GHz ?

In a message dated 27/10/2005 16:07:16 GMT Daylight Time, peter@... writes:
I've long
proposed ACTIVITY days rather than contests.
In the "bad old days" there used to be weekly, local, microwave activity/chat nets. Whatever happened to that idea? I suppose it got overtaken by the medium I'm using now - but it ain't real-time!
 
73 de Mike, G3PFR


Re: HP 10811-60111 info

Talbot Andrew <actalbot@...>
 

 All GPS modules you can buy off-the-shelf have a 1 PPS output.  If you are using that to lock a good OXCO then expect a lock up time of a few  minutes to several hours depending on how you want to trade off the PLL parameters, trading instantaneous frequency accuracy against lockup.  I believe the CT1 design allows you to customise the loop parameters as you want.

GPS receivers themselves give a short term timing variation of a few parts in 10^-9 over tens of seconds to minutes so for microwaves, at least above 5.7GHz, its nice to smooth this out otherwise you'll end up with a tone that wanders just about audibly.  A

THe Motorola Oncore in many of its variants (M12, GT, UT) is one of the easier to drive modules, as is the Garmin Family (GPS25, 35).  The Jupiter-T has a 10kHz output which makes frequency locking a lot simpler, but it not such a nice board to drive if you are interresteed in the data from it.

Take a look at the presentation I gave to the HFC a few weeks ago on using GPS.  

It can be found at:   www.frars.org.uk

 

Andy  G4JNT

 
 -----Original Message-----
From: G0RUZ Conrad [mailto:conrad@...]
Sent: 26 October 2005 19:31
To: ukmicrowaves@...
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


"The Information contained in this E-Mail and any subsequent correspondence"
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"prohibited and may be unlawful."


New mm-bands - the case FOR

Grant Hodgson <grant@...>
 

I beleive that the addition of one or more bands between 24 and 47GHz would
be of major benefit to the microwave community as a whole, and particularly
those that like to experiment with mm-technology.

My response to Ofcom's 'Spectrum Framework Review - Implementation
Plan' backed up the UkuG's response for additional spectrum to be made
available for amateur use at 28 and/or 32GHz. (I missed off 40GHz and will
comment on it further below).

Here are three reasons as to why I believe either of these bands could be of
major benefit :-

1) Propagation
--------------

The most significant benefit in using a new band bewteen 24 and 47 GHz is
that of range. Contacts of 500km + are not uncommon on 10GHz, but even with
2W PAs, low noise pre-amps and high gain dishes (36dBi gain typically) the
distances
achievable on 24GHz are considerably less. The predominant reason for this
is not lack of activity, it is due to absorption in the atmosphere of
microwave signals due to water molecules. The amount of absorption varies
with frequency, temperature and humidity, but it is not simply a case of
more absorption at higher
frequencies. The water absorbtion peaks at around 22GHz, and falls away at
higher and lower frequencies. Unfortunately, absorption at 24GHz is close
to maximum, and this is why the 'best Dxs' on 24GHz are relatively low
considering the ERPs being used nowadays.

As the operting frequency is increased above 24GHz, the atmospheric loss
drops considerably, and reaches a minimum at approx 35GHz. The loss at
24GHz is approx. 30dB/100km, at 32GHz the loss is only 7dB/100km. This is
in
addition to other losses such as free space path loss (which isn't actually
a loss at all, but that's another story), loss due to oxygen abosrption,
reflections etc. etc.
The water absorption at 28GHz is only very slightly greater than at
32GHz. So as a rough guide, for a system with similar power, gain, NF etc,
with stations spaced 100km apart, one could expect to see signal margins
approximately 20dB greater on 28 or 32GHz than on 24GHz. Or put another
way, similar performace on 28/32GHz with a 10mW transmitter as a 1W
transmitter on 24GHz! It would seem on paper that 200km + should be
achievable without too much difficulty, which would easily bridge
the 'north/south' divide which seems to be a problem on 24GHz.

2) Experimentation
------------------

It could be said that the number of amateurs who would take up the challenge
to modify, build or even design equipment for any new mm-bands may be fairly
small. However, one of the arguments that keeps getting used over and again
for the retention of the amateur microwave spectrum is that of
experimental work. There is the possibility that the adoption of one or
more new mm-bands could lead to a better understanding of long-distance mm-
wave propogation, or even the discovery of a new propogation mode. Sounds
far fetched? Think the professionals know everything about mm-wave
propogation? I don't think so. Amateur use of the microwave bands tends to
be different to that of commercial and military users, who tend to want
reliable links for a given purpose over a given distance with a given
bandwidth. The fact that anomalous propagation modes exist is of little
interest to them, and they do not generally take much interest in trying to
break new Dx records. But this is exactly what amateur microwavers like
doing, and this is where amateur radio can still play a part in making a
contribution to a technical subject.

3) Something new
----------------

Now I may be wrong on this, but it seems that there isn't a huge amount of
experimentation going on above 24GHz. There are a few stations in the UK
with equipment for 47 and 76, and only one that I know of with 140/248GHz
(who hasn't got anybody to talk to...), but apart from the contests on 47GHz
I'm not aware of much activity on teh mm-bands. The addition of a new band,
particularly one which is nowhere near as difficult as 76GHz, and with the
possibilities of some real Dx thrown in ought to whet the appetites of both
those that like to do the 'techy stuff' and those that like to go out to the
hills and put the gear on the air.

And then there's the satisfaction of the 'firsts' - 1st QSO, 1st GW-GM QSO
etc etc, and of course the records for best Dx which ought not to last for
too long...

Europeans
---------

OK, so there won't be any possibility of 2-way contacts outside the UK, but
that doesn't stop one way, or cross-band contacts should there be any
interest from the more adventurous continentals. This has been happening on
4m for years, and to a certain exent on 6m in the early days - it might also
happen on the mm-bands. And then there's the 1st 24/?? QSO, 24/?? Dx record
etc...

Bands - 28 or 32GHz?
--------------------

The various high power PAs that are being used on 24GHz will give
almost the same amount of power on 28GHz as they would on 24GHz. Also,
surplus low noise amplifiers (which are often 0.5W PAs) also exhibit a
similar noise figure on 28GHz as on 24GHz. So while it's true that there
is 'only a 4GHz difference' between 24 and 28GHz, in operating practice it
could seem more like the difference between 24GHz and 10GHz.

WG20 will work at 28GHz, and it ought not to be too difficult to have a dual-
band 24/28GHz transverter, which would have several advantages - just one
lot of equipment to take out, would allow comparisons between 24 and 28GHz
propagation and should not 'dilute' the activity on 24GHz - in fact, it
might even increase the activity on 24GHz.

32GHz is more difficult; there are plenty of WG22 waveguide parts to be
found but these have often been removed from 38GHz systems. I would guess
that trying to re-tune a 38GHz system to 32GHz might be tricky, but maybe
not impossible. There are also MMICs available that will cover the 32GHz
band; Hittite now produce mixers, frequency doublers and a 300mW PA that
will all work at 32GHz - all in surface mount packages, all of which work at
28GHz as well, and the mixer will also work at 40GHz.

If one had to decide between 28 or 32GHz, then I think 28GHz would be the
band of choice. 32GHz would be more technically challenging, but maybe not
as difficult as many may believe, and may still give QSOs with Dxs greater
than on 24GHz. And of course, that means there would be more people to talk
to, and thus more activity - the north/south divide should not be a serious
problem!

40GHz
-----

I didn't mention this in my Ofcom response for a number of reasons, but
basically I beleive that this band may be more technically difficult than
the other two, and may not be as useful. However, it is possible that
conversion of surplus 38GHz equipment may not be that difficult, and if the
bottom end of the band was made available then there could also be ample
opportunity for experimentation and possibly some Dx.

The suggested bands above 24GHz offer a the potential of a unique
combination of long-distance QSOs and mm-wave technology. I believe that the
UkUG should take every opportunity to lobby Ofcom to allow a small part of
either the 28, 32 or 40GHz bands to be made available for amateur radio use
and will support any such proposals wholeheartedly.

References - the notes above about propogation were based on information in
Vol. 1 of the Microwave Handbook. This is now out of print,
this information is available in the 'International Microwave Handbook'
which is jointly published by the RSGB and ARRL.

regards

Grant Hodgson G8UBN
GH Engineering


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

John Quarmby
 

The RSGB awards cover the bands up to 24GHz but seem to be forgotten by the
society management - I am still waiting for stickers for squares awards
where the claims were sent in 9 months ago! The awards manager is waiting
for RSGB HQ to get new sticker supplies, apparently.

Awards should also be publicised in RadCom and on the Awards website - this
aspect seems to have gone by the board after Tony G6TTL gave up the awards
manager role.

It might be worth writing to the RSGB to say the UKUWG will issue its own
awards unless the RSGB ones are seen to function properly before the end of
the year.

73

John G3XDY

----- Original Message -----
From: "Peter Day" <microwaves@blueyonder.co.uk>
To: <ukmicrowaves@yahoogroups.com>
Sent: Thursday, October 27, 2005 9:24 PM
Subject: Re: [ukmicrowaves] Re: Interested in 28GHz , 32GHz Band or 40GHz ?


G8BKE wrote:

Have we all forgotten about distance awards if you want to maintain a
competitive element, but don't care for contests?

http://www.rsgb.org.uk/awards/awardswebsite/mws.htm#distance

When was the last time one was claimed for 24, 47 or 76G? Back in
the 70's and 80's in GM, microwave contests were in their infancy
so we went out /P with 10GHz usually with the aim of improving ones
overall "best Dx" not to score contest points!


Dead right Chris!

I don't really bother about "sheepskins" myself as I'm satisfied to just
have the contact in my logbook as proof to myself that I did it.
However, I can readily see the satisfaction one could have from such
distance awards.

Maybe the UKuG should offer these to members, in return for a no-profit
fee (ie postage and printing costs to be covered).

What do others think?

Peter, G3PHO




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BBC E-mail: First student satellite lifts off

Peter Day <microwaves@...>
 

Peter Day saw this story on BBC News Online and thought you
should see it.



** First student satellite lifts off **
The first European satellite built entirely by students is set to lift off from Russia's Plesetsk Cosmodrome.
< http://news.bbc.co.uk/go/em/fr/-/1/hi/sci/tech/4375986.stm >


** BBC Daily E-mail **
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Re: Interested in 28GHz , 32GHz Band or 40GHz ?

Peter Day <microwaves@...>
 

G8BKE wrote:

Have we all forgotten about distance awards if you want to maintain a competitive element, but don't care for contests? http://www.rsgb.org.uk/awards/awardswebsite/mws.htm#distance

When was the last time one was claimed for 24, 47 or 76G? Back in the 70's and 80's in GM, microwave contests were in their infancy so we went out /P with 10GHz usually with the aim of improving ones overall "best Dx" not to score contest points!

Dead right Chris!

I don't really bother about "sheepskins" myself as I'm satisfied to just have the contact in my logbook as proof to myself that I did it. However, I can readily see the satisfaction one could have from such distance awards.

Maybe the UKuG should offer these to members, in return for a no-profit fee (ie postage and printing costs to be covered).

What do others think?

Peter, G3PHO


Re: Getting the message over...

Chris Bartram <yahoo@...>
 

On Thursday 27 October 2005 18:03, Clive Jenner wrote:
Quite, exactly me sentiment.
Would you like to translate that, please?

Apathy rules!
Clive, not having the energy, time or ego to get involved heavily in amateur
radio politics (a rather separate hobby from amateur radio, IMHO) doesn't
equate, at least in my case, with apathy. I also have a very active
professional life, a family and a small farm, not to mention other hobbies
totally unrelated to 21st century technology.

I try to contribute to the hobby. I talk to clubs, have offered to act as a
microwave 'elmer', and have written the odd note for 'Scatterpoint'. I
contribute to this group when I think I have something worthwhile to say.
I've also been asked to contribute to Radcom, however I have clients who
would be very embarrassed to see my name associated with that magazine. That
says something about how it's seen by professionals nowadays, I think.

I even get on the bands occasionally!

Apathetic?

73

Chris
GW4DGU


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

mikeg3pfr@...
 

In a message dated 27/10/2005 21:32:39 GMT Daylight Time, microwaves@... writes:
Maybe the UKuG  should offer these to members, in return for a no-profit
fee (ie postage and printing costs to be covered).
Did we not take this function on following affiliation and "takeover" of the newsletter? I'm not sure whether an RSGB Awards Manager exists any longer/
 
regards
 
Mike, G3PFR


Re: New mm-bands - the case FOR

regwoolley@...
 

Will we hear you on the bands then GRANT?????
 
 

In a message dated 27/10/2005 22:08:36 GMT Standard Time, grant@... writes:
I beleive that the addition of one or more bands between 24 and 47GHz would
be of major benefit to the microwave community as a whole, and particularly
those that like to experiment with mm-technology.

My response to Ofcom's 'Spectrum Framework Review - Implementation
Plan' backed up the UkuG's response for additional spectrum to be made
available for amateur use at 28 and/or 32GHz.  (I missed off 40GHz and will
comment on it further below).

Here are three reasons as to why I believe either of these bands could be of
major benefit :-

1) Propagation
--------------

The most significant benefit in using a new band bewteen 24 and 47 GHz is
that of range.  Contacts of 500km + are not uncommon on 10GHz, but even with
2W PAs, low noise pre-amps and high gain dishes (36dBi gain typically) the
distances
achievable on 24GHz are considerably less.  The predominant reason for this
is not lack of activity, it is due to absorption in the atmosphere of
microwave signals due to water molecules.  The amount of absorption varies
with frequency, temperature and humidity, but it is not simply a case of
more absorption at higher
frequencies.  The water absorbtion peaks at around 22GHz, and falls away at
higher and lower frequencies.  Unfortunately, absorption at 24GHz is close
to maximum, and this is why the 'best Dxs' on 24GHz are relatively low
considering the ERPs being used nowadays.

As the operting frequency is increased above 24GHz, the atmospheric loss
drops considerably, and reaches a minimum at approx 35GHz. The loss at
24GHz is approx. 30dB/100km, at 32GHz the loss is only 7dB/100km.  This is
in
addition to other losses such as free space path loss (which isn't actually
a loss at all, but that's another story), loss due to oxygen abosrption,
reflections etc. etc. 
The water absorption at 28GHz is only very slightly greater than at
32GHz.  So as a rough guide, for a system with similar power, gain, NF etc,
with stations spaced 100km apart, one could expect to see signal margins
approximately 20dB greater on 28 or 32GHz than on 24GHz.  Or put another
way, similar performace on 28/32GHz with a 10mW transmitter as a 1W
transmitter on 24GHz!  It would seem on paper that 200km + should be
achievable without too much difficulty, which would easily bridge
the 'north/south' divide which seems to be a problem on 24GHz.

2) Experimentation
------------------

It could be said that the number of amateurs who would take up the challenge
to modify, build or even design equipment for any new mm-bands may be fairly
small.  However, one of the arguments that keeps getting used over and again
for the retention of the amateur microwave spectrum is that of 
experimental work.  There is the possibility that the adoption of one or
more new mm-bands could lead to a better understanding of long-distance mm-
wave propogation, or even the discovery of a new propogation mode.  Sounds
far fetched?  Think the professionals know everything about mm-wave
propogation?  I don't think so.  Amateur use of the microwave bands tends to
be different to that of commercial and military users, who tend to want
reliable links for a given purpose over a given distance with a given
bandwidth.  The fact that anomalous propagation modes exist is of little
interest to them, and they do not generally take much interest in trying to
break new Dx records.  But this is exactly what amateur microwavers like
doing, and this is where amateur radio can still play a part in making a
contribution to a technical subject.

3) Something new
----------------

Now I may be wrong on this, but it seems that there isn't a huge amount of
experimentation going on above 24GHz.  There are a few stations in the UK
with equipment for 47 and 76, and only one that I know of with 140/248GHz
(who hasn't got anybody to talk to...), but apart from the contests on 47GHz
I'm not aware of much activity on teh mm-bands.  The addition of a new band,
particularly one which is nowhere near as difficult as 76GHz, and with the
possibilities of some real Dx thrown in ought to whet the appetites of both
those that like to do the 'techy stuff' and those that like to go out to the
hills and put the gear on the air. 

And then there's the satisfaction of the 'firsts' - 1st QSO, 1st GW-GM QSO
etc etc, and of course the records for best Dx which ought not to last for
too long...

Europeans
---------

OK, so there won't be any possibility of 2-way contacts outside the UK, but
that doesn't stop one way, or cross-band contacts should there be any
interest from the more adventurous continentals.  This has been happening on
4m for years, and to a certain exent on 6m in the early days - it might also
happen on the mm-bands.  And then there's the 1st 24/?? QSO, 24/?? Dx record
etc...

Bands - 28 or 32GHz?
--------------------

The various high power PAs that are being used on 24GHz will give
almost the same amount of power on 28GHz as they would on 24GHz.  Also,
surplus low noise amplifiers (which are often 0.5W PAs) also exhibit a
similar noise figure on 28GHz as on 24GHz.   So while it's true that there
is 'only a 4GHz difference' between 24 and 28GHz, in operating practice it
could seem more like the difference between 24GHz and 10GHz.

WG20 will work at 28GHz, and it ought not to be too difficult to have a dual-
band 24/28GHz transverter, which would have several advantages - just one
lot of equipment to take out, would allow comparisons between 24 and 28GHz
propagation and should not 'dilute' the activity on 24GHz - in fact, it
might even increase the activity on 24GHz.

32GHz is more difficult; there are plenty of WG22 waveguide parts to be
found but these have often been removed from 38GHz systems.  I would guess
that trying to re-tune a 38GHz system to 32GHz might be tricky, but maybe
not impossible.  There are also MMICs available that will cover the 32GHz
band; Hittite now produce mixers, frequency doublers and a 300mW PA that
will all work at 32GHz - all in surface mount packages, all of which work at
28GHz as well, and the mixer will also work at 40GHz.

If one had to decide between 28 or 32GHz, then I think 28GHz would be the
band of choice.  32GHz would be more technically challenging, but maybe not
as difficult as many may believe, and may still give QSOs with Dxs greater
than on 24GHz.  And of course, that means there would be more people to talk
to, and thus more activity - the north/south divide should not be a serious
problem!

40GHz
-----

I didn't mention this in my Ofcom response for a number of reasons, but
basically I beleive that this band may be more technically difficult than
the other two, and may not be as useful.  However, it is possible that
conversion of surplus 38GHz equipment may not be that difficult, and if the
bottom end of the band was made available then there could also be ample
opportunity for experimentation and possibly some Dx.

The suggested bands above 24GHz offer a the potential of a unique
combination of long-distance QSOs and mm-wave technology. I believe that the
UkUG should take every opportunity to lobby Ofcom to allow a small part of
either the 28, 32 or 40GHz bands to be made available for amateur radio use
and will support any such proposals wholeheartedly.

References - the notes above about propogation were based on information in
Vol. 1 of the Microwave Handbook.  This is now out of print, 
this information is available in the 'International Microwave Handbook'
which is jointly published by the RSGB and ARRL.

regards

Grant Hodgson   G8UBN
GH Engineering


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

mikeg3pfr@...
 

In a message dated 27/10/2005 16:07:16 GMT Daylight Time, peter@... writes:
I've long
proposed ACTIVITY days rather than contests.
In the "bad old days" there used to be weekly, local, microwave activity/chat nets. Whatever happened to that idea? I suppose it got overtaken by the medium I'm using now - but it ain't real-time!
 
73 de Mike, G3PFR


Re: Getting the message over...

Clive Jenner <clive.jenner@...>
 

Quite, exactly me sentiment.

Apathy rules!

I think also that a few sell RadCom short. It does after all have to represent within its pages all facets of a very broad hobby.

Oh well off the soap box.

73 Clive.

Chris Bartram wrote:

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


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Re: Getting the message over...

mikeg3pfr@...
 

In a message dated 27/10/2005 15:44:08 GMT Daylight Time, peter@... writes:
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.
That's how I store my (members') emailed copy,  because it's better than clogging up my shack shelves with paper copy and quick to look up/print out any items of special  interest. So far, on a 700MB CD, 29 archived issues occupy 57MB, so at that rate a single CD is going to be full in 20+ years....probably longer than the guaranteed write life of the media! I can vouch for the quality of copy received as .PDFs.
 
I share Peter's concern about "freeloaders" if copy is put on the Web too early.
 
73 de Mike, G3PFR


Re: Contests

Peter Day <peter@...>
 

Mr. Ian Lamb wrote:
Easy Tiger !!!

GGrrrrrrrrrrrrrrrrrrr! :-)


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

Chris G8BKE
 

Have we all forgotten about distance awards if you want to maintain a
competitive element, but don't care for contests?

http://www.rsgb.org.uk/awards/awardswebsite/mws.htm#distance

When was the last time one was claimed for 24, 47 or 76G? Back in
the 70's and 80's in GM, microwave contests were in their infancy
so we went out /P with 10GHz usually with the aim of improving ones
overall "best Dx" not to score contest points!



73 de Chris G8BKE



--- In ukmicrowaves@yahoogroups.com, Peter Day <peter@g...> wrote:
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.


UKuG

Mr. Ian Lamb <ianlamb@...>
 

That is one of the many benefits of the UKuG !

________________________________

From: ukmicrowaves@yahoogroups.com on behalf of Peter Day
Sent: Thu 27/10/2005 16:33
To: ukmicrowaves@yahoogroups.com
Subject: Re: [ukmicrowaves] RSGB


Mr. Ian Lamb wrote:
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.
But you dont need to be a member of UKuG or RSGB to enter our UKuG
contests! We're open to all comers :-)



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Re: Contests

Mr. Ian Lamb <ianlamb@...>
 

Easy Tiger !!!



________________________________

From: ukmicrowaves@yahoogroups.com on behalf of Peter Day
Sent: Thu 27/10/2005 16:27
To: ukmicrowaves@yahoogroups.com
Subject: Re: [ukmicrowaves] Contests


Mr. Ian Lamb wrote:
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.
No I haven't avoided it Ian ...it's just that I get 100-150 emails a day
and can't spend every hour at the computer! Yours had to take its turn
until this afternoon.. :-)

73

Peter


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Re: RSGB

Peter Day <peter@...>
 

Mr. Ian Lamb wrote:
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.
But you dont need to be a member of UKuG or RSGB to enter our UKuG contests! We're open to all comers :-)



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Re: 23 and 3 cm fm F9OE/P IN78

Peter Day <peter@...>
 

Cricri wrote:

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

Quoi ????? :-)


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