Alford slot for DATV repeater ?
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This forum is run by the BATC (British Amateur Television Club), it is service made freely available to all interested parties, please do not abuse this privilege.
Thank you
Alford slot for DATV repeater ?
Hi guys,
attempting to collect a number of items for a DATV station which may evolve into a repeater.
Was wondering if anyone had an Alford slot or similar antenna they'd like to part with ?
Also looking for a DATV receiver with a good signal indicator output.
If you've got anything else which maybe useful which you no longer want, please let me know.
My e mail address is on my qrz.com page.
73 Tim G4WIM
attempting to collect a number of items for a DATV station which may evolve into a repeater.
Was wondering if anyone had an Alford slot or similar antenna they'd like to part with ?
Also looking for a DATV receiver with a good signal indicator output.
If you've got anything else which maybe useful which you no longer want, please let me know.
My e mail address is on my qrz.com page.
73 Tim G4WIM
Re: Alford slot for DATV repeater ?
If you can look after Tim G4WIM first.
I would pay good money if someone who has young and or steady hands, and could build one on 1249Mhz and one on 1322Mhz.
Lawn and garden tidying can be done if local
It would be a great help.
Fitting PMR mobiles before we had battery screwdrivers has caught up with me...
Peter G8DKC
I would pay good money if someone who has young and or steady hands, and could build one on 1249Mhz and one on 1322Mhz.
Lawn and garden tidying can be done if local

It would be a great help.
Fitting PMR mobiles before we had battery screwdrivers has caught up with me...
Peter G8DKC
Re: Alford slot for DATV repeater ?
I am not sure whether this chap is still in business
http://freespace.virgin.net/stuart.mars ... page8.html
but that is where I bought one from.
- Charles
http://freespace.virgin.net/stuart.mars ... page8.html
but that is where I bought one from.
- Charles
- G1LPS Terry
- Posts: 203
- Joined: Mon Mar 10, 2008 10:33 pm
Re: Alford slot for DATV repeater ?
the slots on GB3KM were made by Stuart 11 years ago. still going strong 

Re: Alford slot for DATV repeater ?
Thank you for your replies, Terry & Charles.
I managed to get an email back from Stuart a year or so back after several tries, he said he had some items left in stock,
I said ok what can you help me with? Never had a reply, tried several more times.
Have sent Email today just to see, if he is still in Tamworth that is about an hour from me at the most.
May just go over a make discreet enquiries.
73
Peter
I managed to get an email back from Stuart a year or so back after several tries, he said he had some items left in stock,
I said ok what can you help me with? Never had a reply, tried several more times.
Have sent Email today just to see, if he is still in Tamworth that is about an hour from me at the most.
May just go over a make discreet enquiries.
73
Peter
Re: Alford slot for DATV repeater ?
Hi All,
We may have the answer for GB3ET.
John M1CNJ has the kit to have a go at cutting slots, he says he is not looking for orders.
You never know what he may suggest in the future, someone to slot the tube would be a start?
But the main thing is to build the slots and get them on frequency.
Will keep you up todate on his progress.
73
Peter
We may have the answer for GB3ET.
John M1CNJ has the kit to have a go at cutting slots, he says he is not looking for orders.
You never know what he may suggest in the future, someone to slot the tube would be a start?
But the main thing is to build the slots and get them on frequency.
Will keep you up todate on his progress.
73
Peter
- Attachments
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- First Slot-1s.JPG (76.55 KiB) Viewed 8851 times
Re: Alford slot for DATV repeater ?
Stuart Marshall has a few email addresses and I've bought quite a few bits from him including an Alford slot for the local repeater here. I've sent you 3 of his email addresses by PM, I usually send to all of them.
Steve Marshall (Not Related).
Steve Marshall (Not Related).
Find me on the LEO/MEO satellites.
https://m0skm.com/2024/03/29/worked-all-states/
https://m0skm.com/2024/03/29/worked-all-states/
Re: Alford slot for DATV repeater ?
Hi guys,
been a little busy recently so not had chance to catch up on this topic.
I appreciate all the leads and tips with respect to antenna and will definitely be following up.
Turns out I have tried to contact G6NHG via e mail but I think it went to a defunct e mail address (the one on his website?).
In the short term I have discovered a half sized alford slot I forgot I had and it appears to work - but if we get GB3FT approved (big if) then something a little more 'gainy' will be in order.
73 Tim
been a little busy recently so not had chance to catch up on this topic.
I appreciate all the leads and tips with respect to antenna and will definitely be following up.
Turns out I have tried to contact G6NHG via e mail but I think it went to a defunct e mail address (the one on his website?).
In the short term I have discovered a half sized alford slot I forgot I had and it appears to work - but if we get GB3FT approved (big if) then something a little more 'gainy' will be in order.
73 Tim
Re: Alford slot for DATV repeater ?
You are proberly aware that PE1RKI Bert modderham makes slotted waveguide antennas for 23cms up ...obviously depending on your budget, requirements etc
http://www.pe1rki.com/23cm-13cm-9cm-6cm ... ennas.html
http://www.pe1rki.com/23cm-13cm-9cm-6cm ... ennas.html
Steve G4HTZ
ASHEN nr Sudbury JO02GB52 90m ASL
PORTSDOWN and a RYDE …
ASHEN nr Sudbury JO02GB52 90m ASL
PORTSDOWN and a RYDE …