Tag Archives: Mark (M7MHY)

Mark’s First Impressions of the PK MW Loop

by Mark (M7MHY)

It was while travelling in the Greek islands a few weeks ago, I first spoke to Paul Karlstrand.

I’d sent him an email, requesting a shipping quote from his home country in Australia to mine, Scotland, UK. I got a prompt reply, and he was only too happy to answer any questions I had, not only regarding shipping, but with any other queries I may have had concerning his loops. What a nice guy.

Fast forward to present day and I’ve been using his 36cm MW passive loop (catalogue code ‘TAM’) for a few days now. From paying the invoice through PayPal, the loop being built and assembled, to arriving on my doorstep around 11,000 miles later – it took just 10 days.

The free pen is a nice touch!

This is most certainly not a review of the antenna, it’s just a quick note on my observations and experience from the hours of enjoyment I’ve now had using it.

My conclusion? It’s brilliant.

I’ve caught several stations now generally not audible through the day with the Tecsun AN-200. The signal gain of the larger 36cm diameter PK loop compared with the 22cm Tecsun, improves reception quite drastically. Combined with a ‘split band?’ switch from 525 to 710kHz in the left position and from 710 to 1725kHz on the right, it does a great job of matching the radio’s tuned frequency to the loop without feeling finicky while turning the knob.

MW band is split into two sections

Of course, during grey line propagation or after dark, things just keep getting better. I have a few low power ‘test’ stations that I’ll use to check conditions and test radios and antennas with and am pleased to report, that the PK Loop 36cm performed remarkably in its job of funneling those weak signals into my receiver.

Pulling in some weak signals during the twilight hours

These products are very well made and are obviously manufactured with passion, care and attention. I think it would be very difficult to break or damage one, within the confines of normal use.

As soon as I can think of an elaborate enough story to tell my other half, explaining why another large package has arrived from Australia – I can see myself ordering the larger 50cm version from Paul, too.

Click here to check out PK’s Loop Antennas.

73

Mark (M7MHY)

Pocket-Sized DX: Mark’s Roberts Sports 995 Review

Many thanks to SWLing Post contributor, Mark (M7MHY), who shares the following review:


Impressive Pocket Performance!

‘Shirt pocket’ radios are one of my favourite aspects of the hobby. For me, nothing quite beats the enjoyment of cruising the MW band (and a little SWLing on radios that allow), with a tiny, generally inexpensive unit and pushing the boundaries of what is possible with these receivers and their mini-sized internal ferrite bars. I think there should be another subsection of the ultralight category to accommodate such radios – “super ultralight”!

Both radios are of ‘ultralight’ status, but note the size difference.

A couple of days ago, the mail arrived and with it, brought another ‘shirt pocket’ radio for my ever-growing collection – a Roberts Sports 995, which I believe to be a rebadged Sangean DT-120 for the UK market.

Two AAA batteries brought it to life, and a quick glance at the manual told me how to set the clock. I plugged in my headphones and confirmed all was working before waiting patiently for the dark hours to arrive.

I live in a rural location just outside of Edinburgh, Scotland and my band scan was done indoors ‘barefoot’ – with no passive MW loops or suchlike, anywhere in sight.

I settled in with the new radio around 12:30 am and began to scan the medium wave frequencies.

I have omitted the strong daytime stations from this list. Here are my results;

648 kHz – Radio Caroline, Orford Ness, Suffolk, 4kW

327 miles

882kHz – BBC Radio Wales, Washford, Somerset, 10kW

324 miles

972kHz – Sunrise Radio, Southall, London, 1.6kW

323 miles

999kHz – Cadena COPE, Madrid, Spain, 50kW

1067 miles

1035kHz – Lyca Gold, Southall, London, 2.5kW

323 miles

1116kHz – BBC Radio Derby, Burnaston Lane, Derby, 1kW

217 miles

1170kHz – unable to ID foreign station

1260kHz – unable to ID foreign station

1296kHz – Radio XL, Birmingham, 10kW

239 miles

1305kHz – Premier Christian Radio, Chingford, London, 0.5kW

322 miles

1368kHz – Manx Radio, Foxdale, Isle of Man, 20kW

129 miles

1386kHz – Radio Baltic Waves International, Viesintos, Lithuania, 75kW

1093 miles

1458kHz – BBC Asian Network, Birmingham, 5kW

239 miles

1467 kHz – TWR Europe, Roumoules, France, 1000 kW

930 miles

1557kHz – Radio Letna, Kaunas, Lithuania, 50kW

1064 miles

1602kHz – unable to ID foreign station

I am fortunate enough to own a number of this style of radio, and this is without doubt the best performance I’ve experienced with one of these. The Roberts Sports 995 truly is, in my opinion, a tiny DX machine, which will only improve further with an MW loop. I know of no better performing “super ultralight” in this price category (RRP £39.99). It is well worth considering if you happen to enjoy this area of the radio hobby as much as I do.

Best 73’s

Mark

M7MHY