G4NSJ – AMATEUR RADIO STATION

Union Jack flag

G4NSJ home page. Orange radio display reading Welcome to G4NSJ with the web address www.g4nsj.co.uk

Union Jack flag
G4NSJ AUDIO
READY
AUDIO MESSAGE
0:00 / --:--



MAIN MENU HERE

Hi, I’m Ray. I was first licenced in the 1960s with the call, G8CUH. That was after many years of short wave listening, firing up WS No 19 sets, 52 sets, 22 sets, 18 sets, 62 sets, a B44 on 4 metres and a host of other army surplus gear. There was an abundance of second hand gear and army surplus equipment available in those heady days! I then took the morse exam at North Foreland, GNF. And I became G4NSJ. That was a happy day!

In my early teens, I’d tune around 160, 80 and 40 metres and listen to the old boys chatting about aerials. Those knowledgeable gents had been around for years and they’d learned from experimentation and experience, They knew what they were talking about. I learned from them, making notes about the aerials they were discussing as well as listening intently to their musings about transmitters, receivers, ATUs and everything radio.

Now, I’m an old boy chatting about aerials, ATUs and whatever. Well, I’m not that old! What I aim to do with this web site is help newcomers to the hobby, and perhaps procure some interest from old timers. So, newcomer or old timer, I hope you find my site interesting and useful.

THE NATIONAL RADIO CENTRE:

Here I am at GB3RS Bletchley Park. A great couple of days out!

THE RADIO ROOM (shack):

My radio room, or shack, is upstairs in what was the front bedroom. I monitor our local 6 metre repeater GB3CQ, 4 metres FM, 2 metres FM and our local 2 metre and 70cms repeaters. I also monitor the 5MHz frequencies.

Radio room desk crowded with transceivers, a laptop showing a waterfall display, a keyboard and handheld radios, with notes and aerial feeders on the wall behind

MY HF COMMUNICATIONS RECEIVERS:

This is my Marconi CR100 communications receiver. They were popular in the 1960s but are fairly rare these days. This isn’t my original receiver from the good old days but it’s a lovely example. I spent many happy hours listening to the CCF frequencies, the trawler band, the amateur and broadcast bands and much more. The aerial I use for the CR100 is a simple wire, about 80 feet long and 30 feet high. Marconi CR100 communications receiver in a blue metal case, with a meter and tuning scale across the top, a central tuning knob and black control knobs below

UPDATE: April 2025:

I’m now the proud owner of an AR88D communications receiver. I first came across this truly amazing piece of kit when I joined my local radio club back in 1967. It’s taken me 58 years to get one of my own!

Front panel of an AR88D communications receiver, black with a central tuning knob, two glowing orange tuning scales and a row of black control knobs

UPDATE: May 2025:

I’ve been lucky enough to get hold of a Sailor R-105 marine receiver.

Sailor R105 marine receiver with a green metal panel, a large round tuning dial on the right, two columns of band buttons and a speaker grille on the left

UPDATE: November 2025:

I’m now the happy owner of a Racal RA-1772 communications receiver.

Racal RA-1772 communications receiver, a grey rack panel with a red digital frequency display, a meter on the right and rows of knobs

I’m building a Paraset Spy Radio:

You can see from the photo that construction of the Paraset Spy Radio is well underway. It was sometimes known as the Whaddon Mark VII radio. Or, as MI6, The British Secret Intelligence Service named it, the MK7.

Replica Paraset spy radio under construction on a wooden base, with valves along the top, a large tuning dial, several knobs and a crystal holder on a pale blue panel

 

How about this for a communications receiver? It’s my Eddystone 910/1. I’ve had this radio for a good few years and, after a full realignment, it’s working really well. It covers what was the 500kHz marine band but not medium wave, which is a shame. Short wave coverage is 1.5 to 30 mHz.

Eddystone 910/1 communications receiver with a grey front panel, a long tuning scale across the top, a red stop button and two large black knobs

This is one of my two Kenwood TS-570D transceivers. Remember the trawler band? It covered approximately 1.7 to 3.3 Mc/s and was full of ships’ comms and coast stations, not to mention fishing vessels and other craft. The good news is, the trawler band is not dead. Have a tune around during the evenings and, with patience, you’ll be surprised what you’ll hear. I’ll be listing some interesting frequencies later.

Kenwood TS-570D transceiver with its orange display reading 2185.80, in the trawler band

I’m very pleased with this wonderful little communications receiver. It’s a Lowe HF150 covering 30kHz to 30MHz.  I’ve been offered a great deal of cash for this radio… but it’s not for sale! There’s more on this vintage gem here.

Lowe HF-150 communications receiver with a digital display reading 7.290 and a large black tuning knob

And how about this one… it’s a Yaesu FRG-7 with digital readout box and the matching FRT-7700 ATU. I like this vintage communications receiver. It’s great to use and it works really well. No, it’s not for sale!

Yaesu FRG-7 communications receiver with the FRT-7700 antenna tuner and a digital readout box stacked above it

Here is my National HRO receiver. I’ve been restoring this receiver for several weeks and it’s now finished.

Restored front panel of a National HRO receiver, black with a large round tuning dial, a meter at the top left and two small scale windows

I’ve listed my Tecsun S-2000 as a communications receiver because... that’s what it is, isn’t it?

Tecsun S-2000 desktop receiver, black with a speaker grille on the left, two displays, a keypad and a large tuning knob on the right

My reception set R-209 communications receiver.

Front panel of a Reception Set R209, olive green with a large round dial, a wedge-shaped scale, several knobs and sockets

MY RECEIVING STATION:

Below is my receiving set up where I do all my short wave listening. I like to tune around outside the amateur bands and listen to military comms, shipping, aircraft and broadcast stations so this is ideal. The signals feeding this lot come from a MiniWhip active antenna which can be switched to each receiver in turn. My favourite reciever is the Marconi CR100. On top of the CR100 is my Lowe HF-150. No doubt you’ve spotted the Yaesu FRG-7 which is another oldie.

Short wave receiving station on a desk, with a blue Marconi CR100 receiver, a Lowe HF-150 on top, a Yaesu FRG-7 and other radios, and a handheld radio and notes in front
The MiniWhip active antenna can be switched to each receiver in turn, as shown below. I fitted a six-way rotary switch in the box and used the RCA photo sockets for aerial input and outputs. There’s no matching problem as it’s for receive only. As a matter of interest, Heathkit and Collins used RCA antenna plugs and sockets on their gear.

Black aerial switching box with a rotary switch marked 4 way audio input control and gold RCA sockets with cables plugged in on top

MFJ 1020C Active Antenna:

This MFJ 1020C active antenna/preamp/preselector is ideal for use with my communications receivers and various aerials.

Black MFJ-1020C active antenna unit with a telescopic whip on top and tuning and band knobs and a bypass switch on the front

ON THE AIR:

I’m active on two metres, mainly monitoring GB3RW the 2 metre repeater in Worthing, West Sussex. I can also be found on the Isle of Wight repeater, GB3IW from time to time. I monitor 70.450MHz on the 4 metre amateur band so give me a call if you’re within range. I’m also on 6 metres, monitoring  GB3CQ, a repeater located in Worthing: output on 50.750 FM with a tone of 88.5Hz to access the repeater.

My HF radio was a Kenwood TS570D. (See update below) It’s a nice radio, when I can hear above the horrendous noise level! Unfortunately, I suffer from bad interference on the lower bands. 160 and 80 metres are usually wiped out by noise. My main HF aerial is a 132 foot doublet fed with 300 ohm ribbon. It runs from the back garden, over the house to the front garden – hence the interference from mains wiring and noise from phone lines in the street carrying ADSL. Fortunately, the 5MHz frequencies relatively free of interference.

Kenwood TS-570D HF transceiver with its orange display showing 14.000 MHz and a large tuning knob

UPDATE: January 2022

I’m now the proud owner of an Icom IC-7300. This is a fantastic piece of kit and I’ll be writing more about it once I’ve got to grips with it. One thing I have discovered is the noise blanker and reduction work extremely well. One problem is the solitary aerial socket on the rear panel. Why aren’t there three sockets? Information on my coax switching arrangement here.

Icom IC-7300 touchscreen showing a spectrum and waterfall display on 5.398 MHz

Clansman radio equipment:

I’m now the proud owner of several Clansman transceivers.

Clansman PCR-320 military transceiver, a wide dark metal unit with rows of small knobs and switches and a latch at the right

Xiegu G90 transceiver:

Th G90 is an amazing little radio. I bought it to go HF mobile. Well, not actually mobile but portable from the car when parked up on the hills.

Xiegu G90 HF transceiver with a small colour display showing a waterfall, a large tuning knob and a protective frame

WSPR Weak Signal Propagation Reporter:

I’m active on WSPR using my Zach Tek transmitter.  I’ve had amazing results on 10 metres mobile. You can find out more about my WSPR activites here.

Black Zach Tek WSPR transmitter box printed with a circuit diagram, with USB and aerial cables attached

WSPR transmitter used with my QRP Z-match:

This QRP Z-Match is ideal for use with my Zach Tek transmitter.

Zach Tek WSPR transmitter on top of a Z-Match tuner with load and tune knobs, an SWR light and a tune and work switch

ECHOLINK:

I’m not keen on EchoLink but it can be useful at times. For example, I can listen to myself through certain repeaters to check my signal strength into the repeater. If you have EchoLink, try searching for my callsign. If I’m listed, give me a shout.

 

Black Morse key with a rounded plastic body and a cable attachedMORSE CODE:

I recently had my first CW contact in 35 years! I’ve not been on the key since the seventies so I’m brushing up on my Morse code. I’ve just acquired a new (lovely old) Morse key which I believe was the type issued to the Czech army in the early fifties. It’s easy to adjust and really nice to use. I’m now pretty good at 12 wpm so I hope to begin having regular contacts on the air before too long. 15 wpm is my goal at the moment. Oh, and I’ve just joined FISTS CW Club. Kent Morse practice oscillator with a speaker grille, a chart of Morse characters and a volume knob

A practice oscillator is useful but, if you’re just starting out with Morse code, don’t touch a key until you’re receiving 12 words per minute. There’s more about Morse code here.

 

 

 

Here is my 8 amp Morse key. It’s a basic 1940s key but very nice to use. I Wartime 8 amp Morse key with a round black knob on a black base with screws and a cable attacheddon’t know why it’s called an 8 amp. Does anyone know? These were fitted to field telephones during the war years. I had several back in the 60s but they’ve all disappeared. Thanks to Tony for donating this one.

 

 

Hi-Mound Manipulator MK-701 single paddle Morse key on a blue base with adjusting screwsThis is my single paddle key, the Hi-Mound Manipulator MK-701. Paddles are great if you’re sending shed loads of CW.  Straight keys can make your wrist ache… that’s what I find, anyway. Perhaps you disagree?

I’ve just bought a dual paddle Iambic key! It’s a Hi-Mound MK-703, used but in great condition. I began using a twin paddle key in the early 1980s, exactly like the one shown here, and I really Hi-Mound MK-703 dual paddle Morse key with clear paddles on a white marble basehave missed it. To be honest, I didn’t use it in true Iambic mode. For the straight key brigade shaking their heads negatively, I also use my straight keys. There’s more on Morse keyes here.

2 METRES – 70CMS:

This is my 2 metre – 70cms collinear aerial. It’s the Watson W50. The aerial was on a pole in the garden with the base only 14 feet above the ground. I’ve now had the redundant television aerials removed so the Watson can take pride of place on the chimney. It must be around 35 to 40 feet high now. The extra height really has made all the difference. I’m accessing repeaters which, before, I couldn’t even hear.  Obviously, simplex contacts are also far better. The seagull was hanging on the wind, probably watching me! There’s more on VHF UHF aerials here.

Ray standing on grass at the GB3IW repeater site on the Isle of Wight, pointing across the site, with tall aerial masts in the distance

Here I am at the site of GB3IW, the 70cms repeater on the Isle of Wight.  The repeater aerial is the one on the right, on the small hill. I don’t know what the huge tower to the left is for but it’s covered in VHF and UHF folded dipoles. The view from the site is amazing. It’s virtually line of sight across the sea to Worthing, where I live. It’s no wonder I can access the repeater with a hand held in Worthing. More Isle of Wight photos here.

Talking of aerials, I’ve just ordered a 70cms 10 element beam and some RG213 coax. I’m not going to get into towers and rotators so I might stick the beam on a pole and turn it by hand. There are several repeaters to the west of my location, Hampshire, Dorset, Devon, Cornwall... so I might leave it pointing in that direction. Great for simplex QSOs, too. It might be interesting during lift conditions.

 

Anytone AT-778UV mobile radio with a colour display showing GB3WO, buttons marked P1 to P6 and a volume knobThis is the radio I’m using with the Watson W50 aerial. It’s an Anytone model AT-778UV 2 metre and 70cms FM transceiver. I’m really impressed with this radio. Transmitter power is selectable, 5, 15 and 25 Watts, which is perfect for my needs. The radio also covers the VHF marine band... transmit and receive.

 

 

Marconi Power Meter:

Marconi RF power meter in a cream metal case with a large watts meter on top and two sockets belowThis is a very useful piece of test gear. Rated at 25 Watts, it’s good from 1MHz up to at least 200MHz. I’ve owned this for many years and I’ll never let it go. Obviously, it’s great 50 ohm load as well as a power meter. I’ve used this on just about everything from 19 sets, CB radios, amateur radio gear, medium wave transmitters to handheld radios.

 

NanoVNA Vector Network Analyser:

Check out my tests and videos on the amazing NanoVNa here.

NanoVNA handheld network analyser with its screen showing G4NSJ NanoVNA on a graph grid

Aerials on the roof:

This left-hand photo shows my PMR 446 antenna, bottom left of the pic. The 70cms – 2 metre colinear on the chimney. And the remains of a Ringo Ranger pole supporting the centre of my 132 foot doublet. The right-hand photo is a detailed shot of the doublet. The centre is about 30 feet high, the ends slope down to about 20 feet.

Here I am in The Radio Workshop:

This was taken just before my retirement in the spring of 2021. I now have all the time in the world to play amateur radio.

Ray sitting at a workbench in the Radio Workshop, with an old wooden radio beside him and shelves of test equipment behind

Give me a shout on GB3RW or GB3BR if you’re within range of the repeaters. I’m usually listening during week days.

Recording a podcast episode:

Listen to my podcasts here.

Black and white photo of Ray wearing headphones at a desk with a microphone, a mixing desk, a keyboard and a monitor

 

FISTS CW Club logo, a Morse key beneath a blue badge with the club name

 

Gold Lister logo on dark green paint with the caption My Lister Engine Project

 

Member of

The Wireless-Set-No19 Group