Coax plug on V2000 vertical fixed

 Following Paul's suggestion, I ordered a PL259 plug and BNC adaptor. This seems to have been correctly fitted with a very low SWR on 6m, 2m and 70cm. All being well, I shall be on the CDARC 2m FM net on Wednesday evening at 8pm.

V2000 vertical omni

On 6m, 2m (vertical) and 70cm (vertical) the V2000 is used. This photo was taken some years ago. On 6m with 1W CW the USA has been worked with this antenna. 

Sporadic E (Es)

We are just entering the Es season in the northern hemisphere. DX out to about 1500km with low power is common on the lower VHF bands. The photo shows my V2000 omni in 2020. On 6m even QRP SSB is enough to work DX. 

V2000 vertical omni

Many years ago, this triband vertical was erected at the current QTH. It had been up at the old QTH for years. It is probably 20 years old?

It is used on 6m, 2m and 70cm. Apart from just recently,it has worked faultlessly. Richard G3TFX took it apart, cleaned it, added new coax, and re-erected it. It seems to work like new again.

The photo was taken 8 years ago after it was first erected at this QTH.

V2000 vertical omni issues

For several weeks I have had issues with my V2000 omni which I use on 6m, 2m and 70cm. 

G3TFX has been investigating and it looks like the main issue is the coax. The antenna had some moisture in, but this has been removed. I need fresh coax.

In the interim I was hoping to use my VX2 handheld out portable for the Cambridge club net on 145.55MHz FM (2m) this evening. However I cannot find the charger! 

6m FT8 RX (Sunday)

Monitoring 6m FT8 again with the FT817ND and the V2000 omni vertical antenna. Most are UK so far this morning with just a couple of EU stations by Es. 

UPDATE 1530z: 99 stations spotted on 6m FT8 RX (see map).

UPDATE 1805z:  183 stations spotted on 6m FT8 RX so far today.

UPDATE 1929z:  252 stations spotted today.

V2000 issues

Yesterday and this morning G3TFX tried to fix my very old V2000 triband vertical antenna. Sadly, we could not remove the bottom collar despite trying everything. It may be possible, but not in situ. Possibly in a vice if the coax is cut this may be possible. I may have to get a new antenna. They are quite expensive.

V2000 faulty

A local friend Richard G3TFX kindly tried to mend my faulty V2000 vertical. This covers 6m, 2m and 70cm. I must have had it for almost 20 years. Recently it developed a high SWR. When Richard investigated it looked like water had got in and there was some corrosion. He came back today to see if he could loosen the collar at the bottom which he could not release due to corrosion. At the time of writing, this is stuck fast.

At the moment it is about 75cm off the ground without radials and horizontal. Despite this, I have still spotted 172 station on 6m FT8 RX with the best DX spotted A92GE (5036km) in Bahrain!!

6m - 4X1RF spots me yet again with 1W ERP (3519km)

At 1308z 4X1RF spotted my 1W ERP WSPR on 6m for the 9th time this season. I assume it is Es and not single hop F-layer. I am amazed that 4X1RF can copy me so often. There was no sign of  intermediate distance stations. On 10m Chris regularly copies me when I am using low milliwatts. He has very good ears and must have a quiet QTH.  3519km is a great distance on 6m and I am even more pleased as my antenna is just a V2000 triband vertical fed with lossy CB coax. My FT817 is on the mid-power setting only.

I am still hopeful of transatlantic multi-hop Es propagation with WSPR. Patience! I must stick with 6m and keep everything crossed. If, as I have, worked K1TOL on CW in the past on 6m (summer 2007), then WSPR should certainly be possible as long as there are stations active on WSPR in the USA.  K1TOL has a BIG antenna farm but with WSPR more modest antennas in the USA should be fine.

More antenna progress at the new QTH

After having our little grandchildren stay for 6 days (without their parents) the new home has now returned to normal (i.e. tidy) and all the toys have been put away, mine excepted! So, apart from sorting out and decorating the old QTH, my thoughts are increasingly turning to the autumn ham projects again.

I've just collected my Par 10/20/40 end-fed HF antenna and a 1m solid copper ground rod from the old QTH with the aim of erecting the former and pounding in the latter in the next few days. The Par antenna will allow me to get active on some of the HF bands. The earth rod will form the far end of my new earth electrode pair "antenna" which will be used for a series of tests on 8.97, 136 and 472kHz from the new garden. My 8.97kHz beacon can be fired up in QRSS quite easily so RX tests out in the fens can start as soon as the earth-electrode antenna is ready. It will be fascinating to see how this compares at the new QTH.

My big wheel for 2m has still to be procured or made and erected. When this is in place I shall try some QRP weak signal work as mentioned before.

Something else I want to do is some tests locally on 6, 2 and 70cm using a signal generator connected to my V2000 antenna. Tests with G6ALB suggest just a few uW are enough to reach the next village. So I was wondering what the coverage to a mobile would be like locally with, say, 10uW from my generator? A drive-around test in all directions might be fun.

We are still waiting for Virgin Media internet and home phone access though - due Sept 2nd - to allow proper WSPR tests to begin. I bought a 3G wi-fi dongle with 3GB of data which is being used as a stop-gap. WSPR is my mode of choice when testing new antennas or new set-ups as the internet database (near instant) feedback gives a very good idea of how things are working.

V2000 erected and first QSOs on 6, 2 and 70cms from new QTH

On Tuesday I completed the erection of my tri-band colinear at the new QTH and carried out some tests over a 3km path to G6ALB to see how results compared between my old and new QTH on 6, 2 and 70cms. I was expecting results "on the hill" to be somewhat better, but in actual fact over this short path the results were identical within the limits of experimental error. Andrew put in various levels of attenuation to see how low he could go and still copy me. On 2m for example he could put in 43dB attenuation and still just copy me. 43dB is an attenuation of 20000 times suggesting just a few uW is enough to cover this distance.

Yesterday morning I was able to work through the Welwyn Garden City 70cm repeater, although conditions were up a bit. Last night I worked several I and HA stations on 6m SSB and CW during an unexpected Es opening, getting good reports with my 5W.  Conclusion so far: the antenna works fine.

I am now considering that big-wheel for 2m on the same mast. I am looking forward to working some SSB/CW stations again on 2m.

All my antennas now dismantled ready for the move

Today was an historic day: for the first time in around 20 years or more, I have NO antennas up outside at this QTH. The Par 10/20/40 end-fed HF antenna and the trusty V2000 VHF/UHF tri-band colinear were taken down this evening. The V2000 has been up continuously now for the best part of 10-12 years and is in remarkable condition still. Apart from a bit of dirt on the fibre glass covers and a little oxidisation on the metalwork, it is like new and electrically still works perfectly. There are several "copies"  of this antenna around, some of which are nothing like the original version.

It will be some days before I get the antennas sorted and erected at the new QTH, but at least the brackets and antenna hardware are now down and available for a suitable moment.

V2000 vertical on 6m

Several recent local tests on 6m lead me to believe the V2000 triband vertical is not that good for local working. It is fine for DXing but signals around 15-25 miles away are weaker than I'd expect. Maybe the polarisation is not as truly vertical as I had believed? I can access the 6m repeater 25 miles away OK and can work stations, but at levels lower than I would have expected. Essentially the V2000 should be like a vertical halfwave on 50MHz, so this is a bit puzzling. In the past I had assumed it to be a pretty good antenna, but maybe not.