New telescopic mast ordered in time for The Big Multimode net and also for portable Amateur HF ops

I have ordered a new mast from SOTAbeams today, this one is a 7m mast as opposed to a 10m mast though this is not any real issue, with there being just under two weeks before the Big Multimode Net I needed to remedy the mast situation.

Though the news I posted yesterday is still fresh in my mind I understand that the hobby must go on and though the net on the 27th is for 11-meters (CB radio) it is still radio none the less, and I will operate that day as 26CT730/P from, I hope, Tan Hill, and hopefully achieve something I've wanted to do for many years, work Roy in Corsica if he is listening and the conditions are good on the day.

The radio I hope to use is my President Grant II, it has had very little airtime since I bought it, and it's legal for 11-meter SSB use.

Of course the mast I've bought will be grand for portable HF ops when I have some portable HF gear (I've been looking at Yaesu FT-817s as these are becoming available a little cheaper due to the 818 but still outside my price range), I will still, however, use type approved CB equipment for 11-meters even in portable ops so anything for Amateur HF will be for exactly that, I believe that the SOTABeams masts are good for long wires, though I suspect two spaced appropriately can support a full sized G5RV when I finally do get the portable HF on Amateur radio off the ground.

The Big Multimode Net is a good way to get interest in the radio hobby, no licence and no special equipment, just a normal AM/FM CB radio and an antenna is all you need to get started, you can power a radio easily off the car cigar lighter socket if it's a normal CB.

There is a second "Activate all Counties" event on the same day as the Big Multimode Net at the same time to get all of the English Counties on the air, if you have a CB setup I urge you take part in this, also if you want to do more than what a set of 80 channels on 27MHz and 16 channels on 446MHz allows you to do then go get your foundation licence, it is worth it.

If you're a CB/11-meter operator I look forward to working you on the air on the 27th June

73 de 2E0EIJ/26CT730

The trusted T2LT antenna for 11-meters, how does it perform over a commercial antenna?

Well to find this out YouTube user "Amateur and 11m radio Tim" (sorry Tim I don't know your callsigns yet) rigged up a commercial antenna, a Sirio 4000, and a T2LT, needless to say those results were impressive.

I have built the T2LT myself as you know, and I know it works as I have got out on it and it pulls in a lot of stations though last time I had it out the conditions left a lot to be desired, however for 11-meters it is the most practical antenna you can get, it can be hung from trees or fibreglass masts and it gets you on the air, how much power it can handle is a different matter entirely as I have never actually tested this and there is no legal way to do that, however the T2LT gets its next outing at the end of June.

Going back to Tim's video, it is here so you can make your own decision on whether for portable 11-meter operation a T2LT or a commercial antenna is the right choice for you.

73 de 26CT730

The Big Multimode Nets 2018

With 4 years since we got legal AM and SSB in the UK on 11-meters many stations will be celebrating this anniversary on Wednesday 27th June, this will include myself from a very particular place, Tan Hill, home of a very famous pub (remember the Waitrose adverts at Christmas anyone? It's that pub), and that location is perfect for radio, this is also WX dependent though in June snow is not expected, but high winds can pose an issue as they have before when I took a rental car up there and could not open the door.

I've always wanted to operate radio from Tan Hill, I've done a little on 2-meters up there but with little success, 11-meters has been a band I've wanted to do from there for some time as I know, even on an HT with the correct conditions (see my YouTube channel for my pre DX-pedition evaluation) a lot can be received, one thing that is true with radio no matter what the band is that height is might.

Of course I couldn't go without filming it and putting it onto YouTube for all to see, which of course I shall do.

On the day I should be operating between 6 and 11pm (respecting the locals of course though it is isolated up there so the locals are 95% sheep and 5% people) as 26CT730 of course, hopefully on legal SSB subject to tests of my President Grant II which are due to be done anyway, after all this is a celebration of the legal CB modes, of course the conditions on 11-meters on the day will also serve as how many QSOs I can log not just the height.

Although this is a UK big net what I would really be pleased to do is work Roy 104CT011 in Corsica, as he has been on the list of 11-meter operators overseas I want to work for a number of years (other callsigns used by him are 104ET001 and 104DA101), but again conditions need to be favourable and he also needs to be listening to the frequencies.

My contacts will be logged as well so I know how many I have worked on legal power, I will get a logging system arranged as soon as possible.

Operating conditions will be the Grant II, stock mic, and T2LT antenna on the fibreglass mast in the drive on mast stand.

Looking forward to making some great contacts in my first participation of the Big Multimode Nets

73 de 26CT730

T2LT revisited

I've been on an antenna theme recently, what with both a Slim Jim and a 2-meter dipole written about (the latter being made, the former an idea I can put to some use), and I continue with a favourite CB antenna of mine, the T2LT, the person who made the original video showing how to build this antenna, Gary 26CTX104, remade the video into a two-parter where he went into a little more detail and built another T2LT, it turns out the video was published well over a year ago and I'd not done a lot of CB at that point and was just starting out on Amateur radio, but CB is a bit of fun now and again but some good contacts can be made on 11 meters depending on the solar cycle amongst other things.

So, as you will know I already have a T2LT antenna built, and have tried it out but using only 4 watts into it (perhaps less on battery powered rigs as these radios are designed to run on 13.8V DC whereas my sealed battery is about 12 volts and a pack of AA batteries don't deliver much for long, handhelds are not counted here) though conditions were not favourable for me

So, the plan is this, get the antenna up on my fibreglass mast, inserted into a parasol base or attached to a secondary mast (no more than 1.5 meters) that will fit a parasol base (this avoids planning constraints as the antenna can be removed with relative ease), run a feeder to my "shack", plug the Grant II into it with my good SWR meter for CB in line (I have 3 CB meters and one VHF/UHF meter) and check to see how well it is tuned up, and try and make some CB QSOs (using my CT call if it is still valid which it should be), naturally I will be carrying out some other tests, I just need a volunteer to sit in the "shack" to transmit, as it's CB and anyone can use it without needing a license, for that test the CB magmount will go on my current car connected to the car adaptor of one of my handhelds, the Intek H-520 would be ideal for this as it has a large readable S-meter over the Midland Alan 42 Multi, though both have an S-meter.

So, I am keen to give this a go so Saturday will be a shopping day for some bits

73 de 26CT730

A year of legal AM and SSB CB

The end of this month will be the first year of us having legal AM and SSB CB, and a "big net" is planned, so what I plan to do, depending on weather, is take a trip to a high point, Tan Hill or similar, and get on the CB for the first time in a while, the Grant 2 has been idle for a while and needs it's legs stretching, so a trip up to a high point will be good for it.

So, antenna wise, the T2LT antenna dropped through the car's sunroof (on it's fibreglass mast which I will have to somehow attach to the car for support) rather than the orbitor that is already on the car, power, initially I was thinking off the 7Ah battery, then onto the car's own battery later once the 7Ah can't deliver enough power, the car of course can be started and stopped as needed to keep the battery topped up, my Sony headphones will be used to provide a better means of monitoring weak signals as always, the station will be identified as "static mobile".

I may initially set up the station (just on the orbitor) on the 27th at Whashton Road car park just after midnight, though I'll drive there before, and see if I can get any QSOs in, and relocate to Tan Hill later in the day after having some sleep, I may return to Tan Hill on the 28th as well for this, and I hope to get a reasonably sized log of all contacts, I've not logged any CB contacts for a while so this will make for a good opportunity to get some CB contacts logged.

If you are on air across the  weekend the net takes place, give me a shout on either channel 14 mids AM or channel 27 mids USB, I myself will be calling on these channels.


73 de 26CT730

Possible DXpedition this weekend

I am renting a car on Saturday afternoon for a few days (until Tuesday afternoon), this is primarily for me to get somewhere I need to be on Monday afternoon without taking the train, however it has another plus point, getting to a nice high point for a spot of DXing.

My initial plan in August was to go to Tan Hill and do some DXing there, this fell through as I could not find any time to get up there and I was late finishing the T2LT and finding a suitable pole for it, this is now remedied, and I could go to Tan Hill or Emley Moor, the latter being home to a famous broadcast transmitting station, but I'll see which would be best, Sutton Bank on the A170 is another option but the only car park is owned by the North Yorkshire Moors National Park Authority so only useable with a magmount and tank whip, and I don't have the latter and cannot put a magmount onto a rental car as it may damage it, Tan Hill is closer however.

The radio (the President Grant 2) will be powered by my sealed lead-acid battery and not from the car's cigarette lighter to avoid damage and running the car's battery flat, the only antenna I have available is the T2LT, this will happen assuming the weather is better than it has been of late.

If I can do this I will be on air most of the day, and I hope to catch you on air that day if conditions permit.

73 de 26CT730

Evening SSB net

Tonight I made an attempt to take part in an SSB net for a couple of hours on EU 28 USB, though I could hear a station in Corsica I was not able to get back to him, nor another Charlie Tango station on channel I heard in the back of the box, presumably Northumberland, there was  a lot of QRM from the US as well as some QSOs going on, but unable to reach them either.

The T2LT had tuned down fine so perhaps conditions were not favourable for me this time, if the weather is good I might give it another go next weekend, and perhaps work out a shelter that's somewhat better than my scooter's cover.


73 de 26CT730

T2LT update

With the new pole having arrived I strapped it to my scooter, packed up my Grant 2, my most decent SWR meter, my multimeter should I need to investigate any shorts, the dummy load in case I needed to check for any issues with the radio, which I did not need.

The pole was not 100% straight (it was propped up), the T2LT was slightly adrift at the top but otherwise fine, a small loop was also provided for tuning. but no tuning was needed as the SWR was below 1.5 at all times, reception was good across both UK and midband, the tuning loop was positioned slightly above the top of the pole with the main part of the antenna running the length of the pole, the choke also worked perfectly.

Should the weather be good on Saturday I shall be heading back up to the car park where I did the tests and will be going on air properly for the first time in a long time.

73 de 26CT730

Pole for T2LT ordered

I have put an order in for a suitable pole for the T2LT, though this pole was advertised as being a flag or windsock pole it would work fine for having a piece of wire attached to it, this will allow me to tune down the T2LT to a suitable degree, though the SWR may change on location but we will see.

The tuning will be done using my President Grant 2 off either the battery pack or the scooter battery, as I don't plan any proper QSOs, I will simply erect the pole and antenna, and either prop or fasten it to a fence post, I will find some velcro straps to allow a temporary fix to the pole, and a small cable tie to loop the top section for tuning, all I have to to is adjust this loop.

I intend to use the most reliable of my 3 SWR meters for this, the meter in the Grant 2 may not be accurate but will be on to see just how accurate the onboard meter of the Grant 2 actually is, also out in the open the antenna should receive across all channels, and also all modes now we have multimode CB, I look forward to finally seeing if my third antenna attempts (I made a dipole a few years ago out of a piece of coax (but forgot the choke), the coax being used later for the ill-fated inverted-V, the T2LT uses one component used in the ill-fated inverted-V, half of the choke core, it was integrated rather than detachable.

I have confidence this antenna will work well, but I have sufficient coax to make another should the need arise.


73 de 26CT730

T2LT progress update

Today, as the weather was nice, I dug out the beginnings of my T2LT antenna and got to work measuring it up and finishing it off, though I have yet to tune it yet.

Tuning will take place as soon as a suitable pole can be acquired, the pole MUST be a fibreglass pole, a carbon or steel pole will upset the antenna and make it useless, given how busy I have been of late with other things it's been a bit difficult to find time to get the T2LT sorted, hopefully I can get it tuned down and it will work nicely, a temporary solution to a problem I shouldn't even have and perfect for hilltop DX, which I hope to do before the weather starts to turn bad, so I'll get on with it sooner rather than later.

Also it's a couple of weeks to go before the Amateur radio club supposedly starts, I will still be going to Colburn that evening but if it's a no-show there is not a lot I can do about it, but if not then it's progress for me.

So I most certainly will be on CB soon, and possibly the Amateur bands not long after.

73 de 26CT730

T2LT progress

The choke is now wound, the PL259 plug is fitted, and the top of the plug where it meets the cable has had a small amount of Sugru applied to it.

On doing a Google search for "PL259 plugs and Sugru" it turns out that there is no record of anyone doing this which means either one of two things, I am the first person in the world to watertight the cable entry of a PL259 plug with Sugru or others have before me and not really made it public

The RG58 I used is reasonably good quality, it has good braid coverage and a good dielectric, I just now need to measure from the choke to the point in which I will be cutting off the braid, I then need to measure from that point to what will be the top of the antenna (so 8.5ft and another 9ft respectively as per 26CTX104's YouTube video, the 9ft top section allows for some tuning down, folded over and not cut as the VSWR may vary from location to location)

So I look forward to getting the next bit done, then perhaps this antenna will be up and I'll be on air soon :)


73 de 26CT730

T2LT choke dilemma

Now as you know, I am planning to build at least one T2LT antenna, using the design outlined in 26CTX104's video on his UKCBTV YouTube account, but I had a dilemma, what to use as the former for the choke, an important component that separates the antenna and coax as this antenna is not only a dipole for all intents and purposes, it is also made from the coax, I had a look at a few ideas, B & Q sold long lengths of soil pipe that had a slightly wide diameter and I could not transport on my scooter, Homebase were no good at all.

So I thought to myself "what do I already have that I could use?" after carefully measuring the diameter of various round objects (cocoa tin, golden syrup tin, fizzy drink bottle, cider bottle and empty marshmallow fluff tub) I then remembered that I still had the two pieces of tube I used for the choke on the ill-fated inverted-V dipole I was intending to use in the loft but for many reasons didn't, I measured this, bingo, 4" diamater, a quarter of an inch shy of 26CTX104's findings but should be fine if the turns are the same (around about 5, I've seen 5 turns on 4" former reported to work fine).

So, I intend to begin today by running out a short length of the coax I have, which is 100m of RG58 which I bought partly to do this, today, winding the choke, fitting a PL259 on the other end, sealing the plug up with some Sugru where the coax leaves it to stop water ingress (I have heatshrink but of the wrong diameter for the PL259), it will take around 24 hours for the Sugru to fully cure and I don't know if any operators have used it on their PL259s, perhaps this is a first, but perhaps not.

So, I'll let you know how I get on, also just need a fibreglass pole and some means to fasten the antenna to it, and I should be on the air very soon.


73 de 26CT730