During the Whitsun week I tested the Perseus FM+ against the Elad FDM-S2 at the Carcassonne QTH. Now here’s the rub……..I identified a dodgy F female to BNC male adapter. And on testing the FM+/Elad/XDR I found they are all about the same sensitivity on 93.3 RNE Radio Nacional Cataluña from Rococorba – slight edge to the XDR. So I take it back (see previous post 21 April 2015) – the Elad is not deaf on Band II. Leaves me with some egg on my face but I’m happy that the discrepancy between receiving in London and Carcassonne has been resolved.
So why do some dxers find the Elad deaf? Dodgy connectors? Sample variations? Hmmmmm………….
I was at the Carcassonne QTH over Easter and I was wanting to do a test on Band II in between the Elad FDM-S2, Sony XDR (Konrad modded), E4000 generic dongle and an ezcap R820T2 dongle. The QTH is in a rural location and I can hear several Catalan stations over 100 km away through the gaps in the Pyrenees.
First I had to order and have delivered a 6m 3mm thick 50mm diameter alum pole to replace a 2mm thick one which had collapsed at the top bracket due to the high winds – the worst part of living in the area – no doubt. I reinstalled a couple of FM5s in H and V orientation. Feedlines come into shack and into a Maplin 2-way F switch. Then output from switch goes into a Maplin 4-way splitter (no pre-amp). So with one switch I can switch between H and V signals.
For the tests I beamed at 120 degrees on 102.2 Mhz – Catalunya Ràdio from Rocorba – 25kw and a distance from me of 139 km. (data from FMlist), and used H polarised twig.
Sony XDR was as usual superb – good signal on 102.2. Next came a generic E4000 dongle which gave up some audio in SDR# – not good though.The Elad and the R820T2 dongle had no audio on 102.2.
I was surprised the Elad was so poor – I can now see why pre-amps are required. I did not bring the Perseus FM+ but I will do next time.
I finally checked the powerful 103.6 Flaixbac outlet from Maçanet de Cabrenys at a distance of 103 km. FMlist says the power is 0.2 kw. I’m pretty sure it’s much higher than that. It’s audible in many locations in Aude and Pyrenees Orientales. At my QTH it powers in, and the XDR was rocking, both dongles were about the same while Elad had audio but trailed the dongles.
I was so surprised by how poor the Elad was that I by-passed the 4-way splitter on 102.2 – to no avail. I am very surprised that there has been no real outcry about high poor the Elad is out of the box on Band II. It certainly is not deaf on MF.
Here are some pictures of the antennas in use here.
First up here’s the Triax FM5s, HS Pubs Band I/II and III, Tonna, satellite 2m/70cm, 23cm, DAB antenna for 250 Mhz sats, Diamond V2000 and the Cushcraft R8 40-10m vertical.
Here’s a couple of pictures of the 40/80m Inverted V (25m legs) with apex on a 12m Spiderbeam:
It’s been nice and sunny today but clouding over now in late afternoon – snow capped Pyrenees look fantastic – Mont St Barthelemy and Pic Soularic:
and snow capped Canigou visible from the QTH in Catalunya del Nord – modern day French department of Pyrenees Orientales – Catalan border is the other side of Canigou. Canigou is a sacred mountain to the Catalan nation.
WR International from The Wrekin area of England was making it into Carcassonne this morning. The station broadcasts every Sunday morning between 08-11 UTC on 12257 kHz – normally inaudible in the UK due to skip. Here’s a short clip of how it was sounding on the Perseus SDR and 300m BOG: