throughout mainland France by the Telecomsatellite, in scrambled form to prevent unauthorised viewing.Close examination of off -air signals along the south coastof the UK should reveal telltale random blackends to the scanning lines to confirm scrambling. Denmark: The new TV2 network should commence oper- CATALOGUE ations in 1988, with twelve main regional transmittersand ONLY 65p eventually fill-in relays where necessary. The servicewill be independent of Danmarks Radio (DR)and will be commercially financed. A 100W ch. E9 relay is at present operating near the main ch. E7 Sonderjyllandtransmitter. Stereo sound: The Italian RAI-3 network(u.h.f.) is at present experimenting with stereophonicsound, using the EQUIPMENT & PROFESSIONAL ADVICE two -carrier system. There are some twohours of stereo Aerial Techniques offer a unique blend of the best equip- transmissions a week. In the USA NBC isgradually ment and impartial professionaladvice for Television/FM hours DXing or simply better domestic reception. converting its entire system to stereo: over twenty LABGEAR UPCONVERTERS ideal for TV-DXing, used butguaranteed in good of stereo broadcasts a week are at present beingtransmit- working order, mains powered, limited stock E17.95 cent of FERNSEH-ANTENNA DR1712 Combined Band 1/3 wideband aerialfor TV-DXing, ted from fifty main stations covering 47 per covers 47-68MHz and 175-230MHz; 2 elements(Band 1); 9 elements Band 3 gold mainland USA, with satellite signal distribution. anodised, requires single down lead E4/3.70 31°W has ceased SPECIAL OFFER! - ANTIFERENCE XG14 Multi -element 17dB(peak) High Gain Satellite news: The 4GHz Intelstat bird at Wideband UHF aerial, covering channels 21-68 09.95 Libya(transponder17)andArgentina LABGEAR CM7271 UHF Wideband Masthead Pre -,15dB Gain; very low operations. f16 20 satellite at noise figure of only 1.6dB. High signal handling 200rnV (transponder 24) have moved to the Intelstat f13.50 with "appall- LABGEAR CM7261 Matching Power Supply for above pre -amp 27-5°W. NTA (Lagos) is on transponder 19 SPECIAL OFFER! - THOMSON TS 2503P1 10" screen ColourTelevision/Monitor, ing quality" - the sound is likened tospeech down a Multi -standard PAUSECAM for Systems B/G/I/L VHF -UHF,mains and 12/24v oper- ation, video/Audio i/p & o/p connections, comes completewith infra -red remote testing a new E2913.90 cardboard tube! The USSR has been control (SAE leaflet) 0.50 satellite, with three TV channels at 32dBWlevel, at 11°W. 'NEW BEST OF CO -TV book by John Wood TSS-1 remains on the 3.675GHz satellite at14°W. Thanks Whether your need is for local or fringe reception,alternative forthisinformation on 4GHz channels, TV/FM DXing, or for a distribution system,Aerial toNickHarrold Techniques is the 'one stop' address for allequipment. transmissions. All prices inclusive of VAT and Carriage. Delivery 7-10 days. An unusual Ku band aerial was shown bythe US firm ACCESS & VISA Mail and Telephone orders welcome. Focus Technology at a recent exhibition.It's a flat, AERIIIAL TEOHNICILIES(T) BARCLAYCARD1 frequency -selective device made from atwo-inch thick 11, Kent Road, Padtstone, sheet of aluminium on which concentricparabolas are Poole, Dorset, 131112 2EH. Tel: 0202 738232. machined. The feedhorn is mounted at thefocal point of the centre parabola. switching between standards is increasing. Luxor,Salora On a personal note, I was surprised to seelightning and Grundig all produce such sets. OurBrussels cor- flashes displayed on the picture while watchingthe CNN respondent recently bought a Grundig P40/242./90which during a heavy Europe 11GHz feed via a 2m dish can tune over 48-340MHzplus u.h.f., has 99 channel thunderstorm! Then down came the summerrain, the memory selection and awide range of fine tuning.It picture became noisy and virtuallydisappeared with loss covers systems B/G, L, I andD/K with switching between of syncs. The picture gradually returned tothe noise -free PAUNTSOSECAM - the NTSC option isuseful for condition as the torrent subsided. watching AFN-TV in suitable locations. Theset's cov- erage includes the S channels usedfor cable distribution. Multi -standard TV Receivers Because losses are greater at u.h.f. than v.h.f.in a cable The use of multi -standard TV sets withautomatic system there's a tendency for cable operatorsto convert to v.h.f. Table 1 lists S channel allocations.

Table 1: S channel allocations. Narrow -band IF Amplifier The use of a narrow i.f. bandpass responsefor weak Bandwidth Bandwidth signal reception or for improvedselectivity during an Bandwidth Ch. Ch. Ch. (MHz) (MHz) (MHz) intense SpE opening gives greatly improvedresults. Most established DXers use a degree of switchedselectivity. S2 111-118 S14 251-258 S26 342-350 Originally use of a 405/625 -line dual -standardreceiver S3 118-125 S15 258-265 S27 350-358 would do the trick, the 405 -line sectionproviding the S4 125-132 S16 265-272 S28 358-366 366-374 narrow vision i.f. bandwidthrequired. Subsequently use S5 132-139 S17 272-279 S29 chassis vision selec- 139-146 S18 279-286 S30 374-382 has been made of surplus Philips G8 S6 tivity modules and designs have appearedin this magazine S7 146-153 S19 286-293 S31 382-390 S20 293-300 S32 390-398 (see the February 1982 issue). Morerecently HS Publica- S8 153-160 commercial unit, type S9 160-167 S21 302-310 S33 398-406 tions of Derby have introduced a S10 167-174 S22 310-318 S34 406-414 D100, that consists of an integratedtuner/i.f. strip with Sll 230-237 S23 318-326 S35 414-422 switched selectivity. Narrowing the i.f.bandwidth will S12 237-244 S24 326-334 S36 422-430 reveal signals that are completely lostwith a standard, 430-438 S13 244-251 S25 334-342 S37 wide i.f. bandwidth. simple circuit Ml -M10, S11 -S19 as Paul Barton recently sent us a relatively Belgian variations: Sl-S10 referred to as (see Fig. 1) that will provide a 2MHzbandwidth when U1 -U9, S20 -S37 not used. Belgian channelS1 is 69-76MHz, S2 readily 76-83MHz, S3 83-90MHz. correctly aligned. The components required are 663 TELEVISION AUGUST 1986