Presentation is loading. Please wait.

Presentation is loading. Please wait.

1 F5DQK August 2008 Getting started on 10 GHz band Getting started on 10 GHz.

Similar presentations


Presentation on theme: "1 F5DQK August 2008 Getting started on 10 GHz band Getting started on 10 GHz."— Presentation transcript:

1 1 F5DQK August 2008 Getting started on 10 GHz band Getting started on 10 GHz

2 2 F5DQK August 2008 Getting started on 10 GHz band Overview On 10 GHz, not many hams did build anything at industrial scale. -Before 1995 the only choice was the 10 GHz SSB-Electronic transverter Kits and also total assemblies, but only a few « on shelf » ready to use ones. - After 1997, DB6NT did really democratise the SHF transverter. Not only on 10 but from 1.3 to 24 GHz and also above. -In 2008 the 3rd generation with a MHz self Quarz oscillating LO is replaced by a tcxo locked to a 10 or 100 MHz precision reference frequency (also GPS referenced)

3 3 F5DQK August 2008 Getting started on 10 GHz band GHz beacons, SCPs and QSOs from JN18gr 4- Indoor, then outdoor operations with a single 49 cm Procom dish - Positive tension added on Tx mode to the 144 MHz coaxial cable for PTT purposes - S-meter desensibilisation GHz DB6NT transverter - Version 1: -schematics & practical - LO frequency drift 5- FT-817nd modifications 6- Prime-focus & offset dish gain comparaison 7- IK1GEX 5.7 / 10 GHz double horn - Isolation measures between both bands 8- Antenna settings of well known french « hyper » dXers Abstract - Versions 2 and 3 : Rx Nf and principally LO stability improvements GHz SSB-Electronic transverter (<1995)

4 4 F5DQK August 2008 Getting started on 10 GHz band GHz beacons and QSOs with 1W

5 5 F5DQK August 2008 Getting started on 10 GHz band 10 GHz beacons QTHF (MHz)D (Km) Dir FT-817nd T>30 minComments F5XBD/77JN18js Favières °.0775 F5HRY .072 F5ZTR/60JN09xj Beauvais °.842 F1XAI/45JN07wt Orléans ° prévue sur.860 F5ZWM/19JN05we ° F1XAU/21JN27ih ° F5ZPS/33IN94qt ° F1URI/73JN35kt Mt Blanc ° F6KPL/50IN99io.315à °Pas dans la table ! LX1DBJN39co ° HB9EMEJN36lx °Essais HB9AKJN47li.985 ON??JO20ht ° DB0UXJN59bd ° DB0JKJO30lx ° Beacons direction from JN18gr Synthé règlé à MHz donne MHz Appel sur.100 réel ou.125 affichés Voie de service MHz Appel sur MHz

6 6 F5DQK August 2008 Getting started on 10 GHz band  MHz HB9EME/b MHz French 10 GHz beacon list QRT définitif  dpt 43 ? Constantly 50% time Occasionally (RS) 10 GHz beacons

7 7 F5DQK August 2008 Getting started on 10 GHz band 10 GHz rXed beacons from JN18 : geographical positions Constantly 50% time Occasionally (RS)

8 8 F5DQK August 2008 Getting started on 10 GHz band 10 GHz SCPs for RS Example of qso with F6DRO via scp in JN26 SCP = scatter point RS = rain scatter (thick thunderstorm cumulonibus) F5DQK F6DRO

9 9 F5DQK August 2008 Getting started on 10 GHz band June /July 5008 from JN18gr via tropo & principally RS 10 GHz QSO’s

10 10 F5DQK August 2008 Getting started on 10 GHz band GHz SSB-Electronic - 2 separate Rx and Tx mixers boxes GHz self oscillating LO with MHz quarz - Pout > +20 dBm or 100 mW

11 11 F5DQK August 2008 Getting started on 10 GHz band 10 GHz SSB-Electronic Transverter Rx converter scheme

12 12 F5DQK August 2008 Getting started on 10 GHz band Rx converter layout 10 GHz SSB-Electronic Transverter

13 13 F5DQK August 2008 Getting started on 10 GHz band Tx converter scheme 10 GHz SSB-Electronic Transverter

14 14 F5DQK August 2008 Getting started on 10 GHz band Tx converter layout 10 GHz SSB-Electronic Transverter

15 15 F5DQK August 2008 Getting started on 10 GHz band 10 GHz SSB-Electronic Transverter GHz local oscillator

16 16 F5DQK August 2008 Getting started on 10 GHz band 10 GHz SSB-Electronic Transverter Boxed transverter XTM-1 aboveXRM-1 under GHz LOOutput PADC/DC converter SMA/WR-90 transition 24V TRx relay

17 17 F5DQK August 2008 Getting started on 10 GHz band 3a- 10 GHz DB6NT transverter vers 1 That was my choice - 1 Rx and Tx box - same GHz self oscillating LO with MHz quarz - Pout = +7 dBm or 5 mW

18 18 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter V1 : Pout 10 à 15mW, NF=3dB 15mW (1991) bufferX4 LO GHz GHz 144 MHz GHz Transverter version 1 Tx Rx

19 19 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Transverter version 1 layout NF=3dB Pout 10 à 15mW GHz resonators GHz resonator

20 20 F5DQK August 2008 Getting started on 10 GHz band GHz LO in 10 GHz DB6NT Transverter Transverter version 1 hardware

21 21 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Outside GHz MKU25 LO with MHz quarz X4 inside the transverter

22 22 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Alternative to constant LO drift with temperature: JWM Model 2556-ALN phase locked oscillator GHz +17 dBm 10 to 12 dB attenuator needed 10 or 100 MHz ref in Ext lockin output Price $

23 23 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter 5 to 200 mW first amp 16 dB gain

24 24 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter HEMT Nf=1 dB, gain=24 dB preamp

25 25 F5DQK August 2008 Getting started on 10 GHz band 0.1Win/1.3Wout 11 dB amp I=0.5A DG1VL preamp 23 dB, Nf=1.3 dB +12V TRx relay 5mWin/200mWout 15 dB amp +12V DC relay Pin 144 MHz <= 2W Pout 10 GHz fiche N 29.8 dBm ou 0.76W Pout direct dBm ou 1.26W Rx 12V 180 mA, Tx 1.15 A -0.7 dB !! -0.3 dB DB6NT transverter V 1, Pout=15 mW dB 10 GHz transverter inside view 10 GHz DB6NT Transverter -0.3 dB LO = GHz soit (106.5 x 24), P=10 mW

26 26 F5DQK August 2008 Getting started on 10 GHz band instead of -0.7 dB Transverter version 1 10 GHz transverter : how getting 0.5 dB more on Tx 10 GHz DB6NT Transverter

27 27 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Oscillator drift after ½ hour heating compared to F5XBD/b 77 frequency T °COscillator drift (kHz)

28 28 F5DQK August 2008 Getting started on 10 GHz band 3b- 10 GHz DB6NT transverter vers 2 - Whole GHz LO with MHz quarz inside - External MHz LO input for far better stability - Pout = +23 dBm or 200 mW

29 29 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Transverter version 2 (2003) NOW: like V1 and -Pout=200 mW, nF=1.2 dB -LO totally on same board Option 1 is: MHz external ocxo fitting a subsidiary SMA connector

30 30 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Transverter version 2 layout

31 31 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Transverter version 2 hardware MHz separate ocxo LO feeding

32 32 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Transverter version : ocxo schematic (Eisch-Kafka)

33 33 F5DQK August 2008 Getting started on 10 GHz band 3c- 10 GHz DB6NT transverter vers 3 -LO=106.5 MHz ocxo at 40°C -External 10 MHz ref input for rock stability (ocxo or GPS) -Tx Nf improvement

34 34 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Transverter version 3 (2007) NOW: like V2 and MHz with internal PLL -LO with internal oven -Ext 10 MHz ref input for frequency stability like the GPS

35 35 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter

36 36 F5DQK August 2008 Getting started on 10 GHz band GHz indoor & outdoor tryings

37 37 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter First RS tryings with open window in the shack room Alu fixation tube for definitive 3 to 5° elevation DC bias-tee for 1st Tx tries 25M DC wire for Δ V measures in future mast mounting

38 38 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Transverter DC pinning

39 39 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Summer configuration « complement »

40 40 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Procom Φ 48 cm prime-focus dish F/D=0.4 F=19.2 cm Gain 27 dBd (37 dBd à 24 GHz) Elévation 3 à 5° Zoom on 10 GHz ensemble

41 41 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter Transverter 10 GHz sous 12V : - Rx 180 mA - Tx, 1.15A - Pout max avant transition guide – = dBm ou 960 mW - Pout sortie directe ampli 1.2W 29.8 dBm ou 0.76W 12.77V descendent à 12.2 V dans 25 m câble 2 x 1.5 mm2 Δ V = V Pin 144 MHz <= 2W Pout 10 GHz fiche N 29.8 dBm ou 0.76W Pout direct dBm ou 1.26W Le point de rain-scatter se comporte comme une antenne avec un diagramme de rayonnement qui est celui d'un dipole, dont l'un des max est orienté vers l'observateur (diagramme en 8). Ce diagramme présente des nuls à 90 degrés et évolue en sinus carré ( en densité de puissance), çàd que l'énergie reçue est plus ou moins forte selon où se trouve le correspondant. Dans les cas où ceux-ci sont du côté des 90°+/- 10 deg, ça ne marche pas. DC & RF measures

42 42 F5DQK August 2008 Getting started on 10 GHz band 5- FT-817nd mods for Tx purposes -Gives a positive voltage in the 144 MHz coaxial while tXing

43 43 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter FT-817nd mod for DC addition in coax while Txing (upper side) BNC socket 4.7 k Ω 1 nF serial cap DB6NT transverters need +V in coax cable for switching in Tx mode !! Or « reversal PTT » !!

44 44 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter -TX OFF - appuyer simultanément sur A B et C et conserver les 3 BP enfoncés - mettre en marche  le 817 envoie une série de bips et passe en mode config - sélecteur à gauche pour faire défiler les menus - choisir menu 5 VHF RXG ( gain Réception en VHF ) valeur initiale=128 - descendre à la valeur 56  S1 de QRM ce qui ne saturera plus le FT-817nd FT-817nd desensibilisation procedure With only noise, S-meter then drops doww from S8 to S1 to the 144 MHz Rx Atténuation pour ramener S8 à S1 dans la ligne 144 MHz : environ 14 dB

45 45 F5DQK August 2008 Getting started on 10 GHz band 10 GHz DB6NT Transverter FT-817nd automatic CW with MixW2 : configuration FT-817nd en mode USB

46 46 F5DQK August 2008 Getting started on 10 GHz band GHz dish comparaison

47 47 F5DQK August 2008 Getting started on 10 GHz band Appareil utiliséF lue (GHz) Après Synthé HP 8672a Compteur Marconi minà TCXO Analyseur spectre Tektronix 494 span 50 Hz minà TCXO Analyseur spectre Tektronix 492bp span 200 Hz Hdérive naturelle Synthé HP 862aTektro 492bpTektro 494 Sortie FI (MHz)RF Mesure LO de MHz Frequency stability measures after ½ hour 10 GHz DB6NT Transverter

48 48 F5DQK August 2008 Getting started on 10 GHz band Gain comparaison of prime-focus and offset dishes 10 GHz DB6NT Transverter DishHeigth (cm) Width (cm)Depth (cm)Gain Procom Prime-focus49 na32 calculés Worldsat offset Echostar offset

49 49 F5DQK August 2008 Getting started on 10 GHz band /5.7 GHz IK1GEX double horn

50 50 F5DQK August 2008 Getting started on 10 GHz band IK1GEX 5.7 & 10 GHz double Horn 10 to 5.7 GHz isolation5.7 to 10 GHz isolation 10 GHz feeding – measures on 5.7 GHz SMA input NB: in opposite side of a coax cable, the guide acts like a HIGHPASS filter !! Target : double 5.7 & 10 GHz feeding on one same 80 cm offset dish Cure : far better isolation must be done on the 5.7 GHz Rx Scalar analyser HP 8757a + sweep HP 8350b

51 51 F5DQK August 2008 Getting started on 10 GHz band IK1GEX 5.7 & 10 GHz double Horn Compromise of different phase center positions on each band - Dixit F6DRO, the gain on each band cannot be optimised - - the phasing center on every band is at 2 different locations. - Not yet discussed - Under construction

52 52 F5DQK August 2008 Getting started on 10 GHz band GHz setup of some french dXers

53 53 F5DQK August 2008 Getting started on 10 GHz band F4BUC or F4DRU/p setup 6W on 10 GHz & offset Φ 85

54 54 F5DQK August 2008 Getting started on 10 GHz band

55 55 F5DQK August 2008 Getting started on 10 GHz band F1BZG/45 setup

56 56 F5DQK August 2008 Getting started on 10 GHz band Trépied F1PDX + 74 cm offset Environ 25 à 30° Fixation à retourner de 180° ? Environ 55° Poids 5.2 Kg

57 57 F5DQK August 2008 Getting started on 10 GHz band HB9AFO/p setup

58 58 F5DQK August 2008 Getting started on 10 GHz band Antenna setup of F5HRY 50 MHz DXSR 3 élts 1296 MHz F9FT 4 x 23 élts 144 MHz 10 élts 432 MHz F9FT 9 élts 2300 MHz Wimo 2 x 40 élts 5.7 GHz Prime focus Φ GHz offset Φ GHz Andrew Φ 33 60W 9W 12W 0.5W

59 59 F5DQK August 2008 Getting started on 10 GHz band Antenna setup of F6APE 10 GHz Prime focus Φ 60 1st TOWER 3 W

60 60 F5DQK August 2008 Getting started on 10 GHz band Setup of F8BRK 10 GHz Prime focus Φ 85 8 W 3 W out DB6NT preamp Sequencer DB6NT 2W amp 5.7 GHz Prime focus Φ 150

61 61 F5DQK August 2008 Getting started on 10 GHz band Setup of F2CT/p 10W à 10 GHz & offset Φ 1.20


Download ppt "1 F5DQK August 2008 Getting started on 10 GHz band Getting started on 10 GHz."

Similar presentations


Ads by Google