Date   

Re: Radiall switch

F1CHF
 


Radiall switch

Alan G0XBV
 

Does anybody have any info for a Radiall R562713162 coaxial switch, please?  I know it has N types and is 0-1 GHz (only just qualifies for here :>)

Thanks,

Alan G0XBV


Re: Activity List for the UK Microwave Group 5.7Ghz and 10GHz contests - Sunday 25th August

G4LDR
 

I'm planning to be QRV on 6cm and on 3cm (providing I can fix a proplem with the TX on that band).

Callsign: G4LDR
Locator: IO91EC02
Bands: 5.7GHz 15W 1.5m dish
             10GHz 25W 1.0m dish
Talkback: ON4KST, 144.390MHz (and Zello SHF Chat)
Times: Various throughout because I also hope to be QRV on 6cm EME on Sunday.

73 Neil G4LDR


Re: Sunday activity session and new Kuhne MKU 10 sequencing.

geoffrey pike
 

Mine is an old ancient G3 version so with this you only sequence when using an external PA, 200mW into a normal sma coax relay will present only a small amount into the Rx port whilst Txing and the barefoot transverter can handle this
However your new version may well be different
Geoff

On Thursday, 22 August 2019, 10:54:47 BST, Nick Gregory G0HIK via Groups.Io <nickg0hik@...> wrote:


I'm not at present, but have a 2w PA I'm planning to install at a later date.

I cant understand why you only need a sequencer with  PA, is there one in the transverter ?

Nick


Re: Sunday activity session and new Kuhne MKU 10 sequencing.

Nick Gregory G0HIK
 

I'm not at present, but have a 2w PA I'm planning to install at a later date.

I cant understand why you only need a sequencer with  PA, is there one in the transverter ?

Nick


Re: Sunday activity session and new Kuhne MKU 10 sequencing.

geoffrey pike
 

Nik,
Are you using an external PA? because if not there is no need for sequencing
Geoff

On Thursday, 22 August 2019, 10:37:21 BST, Nick Gregory G0HIK via Groups.Io <nickg0hik@...> wrote:


I'm hoping to be out for the the Activity session on Sunday, even the Cumbrian weather looks like it might play ball for a change

I'll be on KST when active and will also have 100w and 10 ele on 2mtr talkback

I'm just waiting for a Din connector to arrive for the FT817 ACC socket to complete the project.

I'm using PTT switching from the ACC port rather than 12v up the coax.

The sequencing of the MKU 10, confuses me slightly.

You can PTT and send R.F. to the transverter before it switches over according to the diagrams supplied, as the transvertor switches the aerial change over relay.

I have the SEQ1 sequencer PCB and was planing on using the PA output from that to control the Inhibit output of the 817, so the system has settled down before putting R.F. in.

Is that the way of doing it or can the MKU 10 look after its self ?

Nick G0HIK IO84


Sunday activity session and new Kuhne MKU 10 sequencing.

Nick Gregory G0HIK
 

I'm hoping to be out for the the Activity session on Sunday, even the Cumbrian weather looks like it might play ball for a change

I'll be on KST when active and will also have 100w and 10 ele on 2mtr talkback

I'm just waiting for a Din connector to arrive for the FT817 ACC socket to complete the project.

I'm using PTT switching from the ACC port rather than 12v up the coax.

The sequencing of the MKU 10, confuses me slightly.

You can PTT and send R.F. to the transverter before it switches over according to the diagrams supplied, as the transvertor switches the aerial change over relay.

I have the SEQ1 sequencer PCB and was planing on using the PA output from that to control the Inhibit output of the 817, so the system has settled down before putting R.F. in.

Is that the way of doing it or can the MKU 10 look after its self ?

Nick G0HIK IO84


Re: Tuesday night 23cms

Nigel G8IFN
 

Activity may also have increased because because of the IC-9700 becoming available.
I am back on the band for the first time since the 1980s due to my purchase of the 9700.
Just need to get the antenna outside rather than in the loft.
--
Nigel G8IFN


Re: 3D parts for QO100 and SM6FHZ CP patch feed

Dennis Anderson
 

I typed Microwave and it came back with a 3D design for a 10 GHz horn. 

So looks promising to setup a group 

Dennis G6YBC


On 15 Aug 2019, at 09:54, Neil Smith G4DBN <neil@...> wrote:

Hi Geoff, I must get round to putting some stuff on Thingiverse.  Is there a way to group or index the Things that are Microwave-related to make it easy to find other Things that have been designed for radio applications?

I've been making lenses and mounts and adaptors the very manual old-school way, but I guess someone could 3D print or CNC them easily enough from my CAD masters. Hideously over-engineered adaptor thing has a slow taper from the 17mm LNB throat diameter to the 20.2mm tube ID. It fits inside the horn of an Octagon, and the locking ring presses the adaptor in against the horn using the O ring as a spring and vapour-tight seal. 

3D metal printing is getting cheaper all the time, but I'm sticking to 19th century methods for a bit longer. 

If anyone has a lens design they would like to have machined, UKuG have had a donation of dielectric rod material in various sizes and I'd be happy to use it to make some prototype lenses.  Just one-offs, as the amount of material isn't huge.  These are in Rexolite 1422, but they work OK in UHMWPE and plain polystyrene and PTFE.  Rexolite looks and feels like a Fox's Glacier Mint. Haven't done a taste-test though.

Neil G4DBN

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On 15/08/2019 09:30, G0DDX via Groups.Io wrote:

 

Hi everyone, I’m not terribly active just yet, but have been doing a few things to get going on various uW modes.

 

I have been playing with QO-100 and made a couple of clamps to hold the 22mm copper pipe in a standard 40mm feed on a satellite dish, and a mounting for the beam forming ring for the SM6FHZ CP patch feed.  John G4BAO has got both of these in use, and I have not had any complaints from him, so something must be right!

 

Both these designs are on my page on Thingiverse and are free to be used by all radio hams, and are certainly not for commercial reproduction or making money out of them.

 

They can be obtained from : https://www.thingiverse.com/G0DDX/designs

So if they are of any help please feel free to use them. They are nothing special, but might save you a bit of work.

 

Also there  is a 3D printed Focussing lens by M1KTA on there as well. https://www.thingiverse.com/thing:3507251

 

Hope this will be of use to someone.

 

Best Regards

 

Geoff

G0DDX


Easy 23 cms Signal Source

John E. Beech
 

Hi Iain et al,
The link shows my 23 cms signal source: https://photos.app.goo.gl/hGotiP4KJpotm1hu9 that I knocked up this afternoon, which I've used to tune my Rx. The copper wire round the rig is to hold the PTT "on".

It consists of a BAT86 Schottky diode with the leads extended to make a 23 cms dipole. When driven with a low power FM handheld on 432.075 MHz the diode generates loads of harmonics, the one I want being 1296.225 MHz.

I've used this arrangement before to generate a 13 cms signal source from 2m

eg 144.025 X 9 = 1296.225 MHz or 145.025 X 16 = 2320.400 MHz

de John G8SEQ


Re: Tuesday night 23cms

Neil Smith G4DBN
 

Hi Howard, leading stations usually get between 70 and 100 QSOs and about 80 stations enter logs.  Usually a fair number of 600-800km QSOs via A/S. Erik made 100 last night.

Way more activity than in VHF NFD.  Part of that is because multiple 23cm ops who are members of contest groups often end up running a single station in NFD.

There are lots of new stations around, particularly because of the low-cost transverters which have become available in the last couple of years, but I'm also seeing callsigns from the distant past reappearing.

Neil G4DBN

On 21/08/2019 12:59, g4cch_1 wrote:

Had a quick listen last night on my 5.4m dish that i use for EME.
The dish was parked at almost 90 deg elevation, so wasn't expecting to hear much.
I was hearing quite a few stations from my location in IO93QL - near Scunthorpe
Furthest was G4CLA/P
Was amazed to hear G8XVJ reporting a serial no of 069 at around 9pm.
A few years back, it was struggle to work that many stations on an NFD weekend
So activity must have been very good.
Is this typical of what happens now..??

Howard, G4CCH

 

 

 


Re: Tuesday night 23cms

g4cch_1
 

Had a quick listen last night on my 5.4m dish that i use for EME.
The dish was parked at almost 90 deg elevation, so wasn't expecting to hear much.
I was hearing quite a few stations from my location in IO93QL - near Scunthorpe
Furthest was G4CLA/P
Was amazed to hear G8XVJ reporting a serial no of 069 at around 9pm.
A few years back, it was struggle to work that many stations on an NFD weekend
So activity must have been very good.
Is this typical of what happens now..??

Howard, G4CCH

 

 

 


Re: Activity List for the UK Microwave Group 5.7Ghz and 10GHz contests - Sunday 25th August

geoffrey pike
 

Hope to be qrv on 6cms and 3cms from IO74AU
4 watts 6cms sky dish
1 watt 3cms sky dish
Mobile 07817 177907
2m micorwave talk back 144..390 from say noon to 15:00 or whenever it starts to rain!
cheers
Geoff
GI0GDP

On Wednesday, 21 August 2019, 10:40:05 BST, Nick Gregory G0HIK via Groups.Io <nickg0hik@...> wrote:


I hope to be on, with the new 3cms transverter if I can get it boxed up in time.

250mW 2ft dish

IO84JE probably.

Email me for a sked, but I'll also be on KST when I'm on the band.

Nick G0HIK


Re: Activity List for the UK Microwave Group 5.7Ghz and 10GHz contests - Sunday 25th August

Nick Gregory G0HIK
 

I hope to be on, with the new 3cms transverter if I can get it boxed up in time.

250mW 2ft dish

IO84JE probably.

Email me for a sked, but I'll also be on KST when I'm on the band.

Nick G0HIK


Re: Tuesday night 23cms

Nick Gregory G0HIK
 

It was hard going last night.

Signals were down and long QSB, the site has also gone noisy, S9 +10 with the SG-LABs pre-amp/amp, so that was taken out of circuit. Would a bandpass filter help the situation ?
The rain which I had managed to avoid came at 20:00z, so just an hour of operating.
17 QSO's in an hour was not too bad I suppose.

Nick G0HIK IO84


Re: Tuesday night 23cms

militaryoperator
 

Hi Ben.
Sorry I did not hear you tonight despite dozens and dozens of CQ calls on 1296.167.
Just checking through my log I managed eleven QSO's with other stations that were close to your beam heading from me.. Total of 62 QSO's. My best DX was an ON at 495km.
Conditions were poor this evening and I hope to contact you in the future.
73 de Denis G3UVR (Near Liverpool)
_._,_._,_


OK Denis. Yes, very poor for me. Last month I worked 8 and heard loads, last night worked 4 and heard very few despite the addition of an LNA and PA since last month. 

Hey ho, try again next month, hi. Might have a better antenna by then. 

cheers, Ben. G4BXD 


Re: Activity List for the UK Microwave Group 5.7Ghz and 10GHz contests - Sunday 25th August

Martyn G3UKV
 

GM All
This Sunday. . . . . . .

Call: G3ZME/P
Locator: IO82QL (Brown Clee)
Bands: 5.7 and 10 GHz (but recent months bad wi-fi type noise on 5.7 all directions).
Talkback: 'KST, 2m 144.390MHz (preferred), Zello
Times: From about 10:30 local

73 Martyn (G3UKV)

On 19/08/2019 11:40, John Lemay wrote:
Hi John and all

I plan to be QRV ..........

Call: G4ZTR
Locator: JO01KW
Band: 10GHz, 10w, 1m dish
Talkback: ON4KST
Times: Various throughout

Regards

John G4ZTR


-----Original Message-----
From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of John Quarmby via Groups.Io
Sent: 17 August 2019 17:53
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] Activity List for the UK Microwave Group 5.7Ghz and 10GHz contests - Sunday 25th August

The next in the summer season of UKuG 5.7 and 10GHz events takes place 
next Sunday 25th August, from 0700 to 1900 clock time (0600-1800 GMT). 
Entrants can operate for a maximum of 8 hours during that period.

This session coincides with the French F8TD Microwave Contest, so there 
should be stations to try with across the channel.

I will compile an activity list from inputs received by close of play 
Friday 23rd August. Please send details of your planned activity in the 
usual format:

Callsign: G3XDY
Locator: JO02OB
Bands: 5.7GHz 15W 0.6m dish
              10GHz 10W  0.6m dish
Talkback: ON4KST, Zello SHF Chat, 144.390MHz
Times: Various throughout

73

John G3XDY
UKuG Contest Manager











Re: Tuesday night 23cms

G3UVR Denis IO83KH
 

Hi Ben.

Sorry I did not hear you tonight despite dozens and dozens of CQ calls on 1296.167.
Just checking through my log I managed eleven QSO's with other stations that were close to your beam heading from me.. Total of 62 QSO's. My best DX was an ON at 495km.

Conditions were poor this evening and I hope to contact you in the future.

73 de Denis G3UVR (Near Liverpool)


Re: Activity List for the UK Microwave Group 5.7Ghz and 10GHz contests - Sunday 25th August

Barry Lewis
 

We plan to be active from Walbury Hill again on Sunday:-

 

Callsign: G4SJH/P

Locator: IO91GI44

Band: 10GHz 0.8W, 1m offset dish

Talkback: ON4KST + 144.390MHz

Times: from 10:00 BST

 

Callsign: G1EHF/P

Locator: IO91GI44

Band: 5.760GHz 5W, 75cm offset dish + 5.665GHz WBFM 2W, 23dBi panel

Talkback: ON4KST + 144.390MHz

Times: from 10:00 BST

 

73, Barry G4SJH


Re: Tuesday night 23cms

Neil Smith G4DBN
 

Hi Ben, after many decades of messing about on the radio with VHF and up, I can *almost* visualise any 6-digit UK or near-EU locator on a map and I have an innate feeling about which way to beam.  However, these days I just cheat and use K7FRY.com

You can zoom in and identify your 8-char and 10-char locator using the map.

If I get the station rebuilt in time this evening, 212 is just about my best direction, so I should be able to find you.  Only 50/50 though, I have to get the masthead box finished and the filter/relay/LNA wired up.  The rest of Life is intruding somewhat on my radio playtime at the moment.

Neil G4DBN

My 10-character locator for *some* of my antennas.  Others are in adjacent squares end in EP, EK, EN, EM and EH.  Useful to visualise why I can only rarely work IO91 on microwaves. I planted every one of those trees blocking the path.

On 20/08/2019 16:38, militaryoperator via Groups.Io wrote:
Hi Ben .

Those of us who do these contest will exactly know what those numbers mean.. You are 151deg from me and your return heading is 332deg to me.

Hope to settle down on a frequency somewhere between 1296.160 and 1296.170 where I will be doing a lot of CQ'ing in all directions. Hope to receive you later.

73 de Denis G3UVR