MM0OPX - Colin Summers
@mm0opx.bsky.social
I play with bits of wire to try and get them to emit RF
Struggling to match many bands on the new Doublet. Ladder line length too short I'm thinking. Can anyone model this?
March 16, 2025 at 10:05 AM
Struggling to match many bands on the new Doublet. Ladder line length too short I'm thinking. Can anyone model this?
Rattled up a QRO choke for the Doublet. 2 x FT240-43 with 10 turns of RG400. Wont be running much more than 500w so plenty headroom with this.
March 8, 2025 at 5:15 PM
Rattled up a QRO choke for the Doublet. 2 x FT240-43 with 10 turns of RG400. Wont be running much more than 500w so plenty headroom with this.
So I need to build myself a 4:1 balun. It's for a Doublet I will be putting up soon, I would like it rated for at least 2kw 80m thru 10m. Anyone have any pictures of their builds for some inspiration?
February 14, 2025 at 1:47 PM
So I need to build myself a 4:1 balun. It's for a Doublet I will be putting up soon, I would like it rated for at least 2kw 80m thru 10m. Anyone have any pictures of their builds for some inspiration?
So I finally got to try my figure of 8 RG213 loop with the WGL. Using 2 cheap 92cm hula hoops as supports. I can't directly compare to the single square loop but I'm sure it will be better. I had fun last night in the PA contest using it for RX and a vertical for TX on 40 & 80m
February 9, 2025 at 10:41 AM
So I finally got to try my figure of 8 RG213 loop with the WGL. Using 2 cheap 92cm hula hoops as supports. I can't directly compare to the single square loop but I'm sure it will be better. I had fun last night in the PA contest using it for RX and a vertical for TX on 40 & 80m
Nice to get Brian ZL3XDJ in the log again this morning. Just in the nick of time before the band swiched off. Also nice to see the RBN spotting me down under. Only 100w and an off centre fed dipole my end and Brian with 100w and a raised 1/4 wave vertical his end.
February 9, 2025 at 9:28 AM
Nice to get Brian ZL3XDJ in the log again this morning. Just in the nick of time before the band swiched off. Also nice to see the RBN spotting me down under. Only 100w and an off centre fed dipole my end and Brian with 100w and a raised 1/4 wave vertical his end.
Another night familiarising myself with the QMX+, it does not sound like a cheap radio at all. On the contrary, it is a joy to listen to CW. The wee power bank is doing a brilliant job too. I will easily get a good few hours operating with it.
February 5, 2025 at 9:11 PM
Another night familiarising myself with the QMX+, it does not sound like a cheap radio at all. On the contrary, it is a joy to listen to CW. The wee power bank is doing a brilliant job too. I will easily get a good few hours operating with it.
Really impressed with the QMX+. 3.4w out on 20m and I get a ping across the pond on an audibly dead band. The Anker Nano PB with 12v trigger cable works a treat with no obvious noise.
February 2, 2025 at 9:53 PM
Really impressed with the QMX+. 3.4w out on 20m and I get a ping across the pond on an audibly dead band. The Anker Nano PB with 12v trigger cable works a treat with no obvious noise.
Strange one! 20ah Charmast PD Power Bank with 2 x 12v trigger cables. One is WITRN from Pihut and the other is a GINTOOYUN from Amazon. One works and the other reads 5V. Which source one would you trust more?
February 1, 2025 at 5:48 PM
Strange one! 20ah Charmast PD Power Bank with 2 x 12v trigger cables. One is WITRN from Pihut and the other is a GINTOOYUN from Amazon. One works and the other reads 5V. Which source one would you trust more?
Awesome 👌😍. Thought I was at least a couple of weeks out before shipping.
January 23, 2025 at 1:16 PM
Awesome 👌😍. Thought I was at least a couple of weeks out before shipping.
Start of something new. Too good of a deal to pass up for us UK customers.
December 18, 2024 at 5:27 PM
Start of something new. Too good of a deal to pass up for us UK customers.
Left the #wellgood on WSPR RX all night and this was the DX spots it received on 80m. Thanks to Roland @hb9vqq.bsky.social for the amazing anaylyics ability.
December 14, 2024 at 12:45 PM
Left the #wellgood on WSPR RX all night and this was the DX spots it received on 80m. Thanks to Roland @hb9vqq.bsky.social for the amazing anaylyics ability.
There it is. All held together with bungee straps to test. I will make things more permanent soon, although this will a quick deploy/takedown system.
December 13, 2024 at 3:05 PM
There it is. All held together with bungee straps to test. I will make things more permanent soon, although this will a quick deploy/takedown system.
I really dont like soldering 2.1 x 5.5 connectors. Its peanuts to buy these moulded pigtails and just add more wire if needed.
December 13, 2024 at 1:54 PM
I really dont like soldering 2.1 x 5.5 connectors. Its peanuts to buy these moulded pigtails and just add more wire if needed.
My build of the #WellGood premiers tonight at 2100utc youtu.be/vHk-aVBxLOw?...
Building the AMAZING WellGood Active Receiving Loop #swl #hamradio
YouTube video by MM0OPX Field Radio
youtu.be
December 13, 2024 at 12:20 PM
My build of the #WellGood premiers tonight at 2100utc youtu.be/vHk-aVBxLOw?...
Great service and prices again from Sotabeams & Switch Electronics. Ordered Friday and arrived Monday. This should allow me to build the Bias T for the #wellgood
December 9, 2024 at 6:13 PM
Great service and prices again from Sotabeams & Switch Electronics. Ordered Friday and arrived Monday. This should allow me to build the Bias T for the #wellgood
Half the #wellgood assembled. Kept it solderless for now (all filmed). Ended up using M&P Ultraflex 7 for the loop as the braid has 100% coverage. Now, we have the issue of constraining it in a nice circle. Bias T will be assembled once,its enclosure arrives.
December 8, 2024 at 9:49 PM
Half the #wellgood assembled. Kept it solderless for now (all filmed). Ended up using M&P Ultraflex 7 for the loop as the braid has 100% coverage. Now, we have the issue of constraining it in a nice circle. Bias T will be assembled once,its enclosure arrives.
So I'm wondering if I can use this as a PSU for for my QMX+ on order? What do I need to do to emsure max 12v?
December 8, 2024 at 9:35 AM
So I'm wondering if I can use this as a PSU for for my QMX+ on order? What do I need to do to emsure max 12v?
Reposted by MM0OPX - Colin Summers
December 7, 2024 at 8:34 PM
Gathering bits and bobs for the #wellgood loop build. Making do with what I have to hand mostly. Few small bits ordered to make life easier.
December 6, 2024 at 7:29 PM
Gathering bits and bobs for the #wellgood loop build. Making do with what I have to hand mostly. Few small bits ordered to make life easier.
Just threw LOG out on the lawn and the SNR difference over the OCFD looks impressive, on short skip anyway.
December 4, 2024 at 5:41 PM
Just threw LOG out on the lawn and the SNR difference over the OCFD looks impressive, on short skip anyway.
For my UK followers - I'm looking at a new mobile phone contact (S24 Ultra + Sim) and see some really good deals with ID mobile which still allows roaming. Any views welcome on ID mobile who use Threes's network. I'm currently with o2.
December 1, 2024 at 8:19 AM
For my UK followers - I'm looking at a new mobile phone contact (S24 Ultra + Sim) and see some really good deals with ID mobile which still allows roaming. Any views welcome on ID mobile who use Threes's network. I'm currently with o2.