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LX2SM Rigs and ants

Big brother is watching you

Please visit my recently started old and vintage microphone blog

My station VHF

Rig: KENWOOD TM-733E KENWOOD

(I’m looking for a DFK-3B and for an MC-45D, the mic with DTMF encoder , if you have one to sell, send me an e-mail.

ICOM IC-706 MK2G ICOM

When the repeaters in my neighborhood started to switch from 1750Hz to CTCSS I noticed that I was unable to open some relays on UHF, quite annoying and I begun to investigate. First looking in the specs from my IC-706MKIIG I see that the frequency stability could be as bad as +- 7 ppm from 1mn to 60mns after power on with the standart quartz built in. +-7 ppm is 3kHz on 430MHz... I test my rig and found that although mine was not worst case it was 1.7KHz off frequency after 1 hour so I adjust the reference frequency as mentioned in the service manual and can be spot on after 1 hour. I’ve ordered in between a CR-282 as i wanted top specs, it haven’t be necessary as I got after all my adjustement a frequency stability from 0.4 ppm (172Hz) after 2 hours, better than the CR-282... BUT, the 706 as another problem, not only mine but all 706, meaning it can get hot very hot and it does even in RX mode, affecting long term stability. Fortunately there is a quite simple cure and I made it following the tip from SQ7BCE  (you can find others tutorial about this mod on the web) I take the 12V on the tuner connector and not where SQ7BCE does as I found it was neater. This mod improve vastly the t° problem and improve freq stab.

After all that job I was almost able to open all repeaters but only almost, so there was still something wrong with my unit. I take a look at the CTCSS generation and meas the deviation produce by the CTCSS tone. I found 200Hz, this was too low, the recommendation for CTCSS dev is 500 to 600Hz (sometimes more). I measure the deviation using the ICOM protocol and found 2.2KHz (wide position) again much too low for me (recommendation is 4.5KHz). Again service manual and adjustment and I got my 4.5KHz. and finally open without problem all the repeaters I can listen too

If you still have problem with CTCSS after all that job there is another cure see there.

 

TM-V71E KENWOOD

For Echolink use.

tm_v71e

Power suply: Pan International 25070 Pan International

Antenna: SERENE TSB-3301

Antenna: DIAMOND X-200N DIAMOND ANTENNA

Antenna: DIAMOND X-50N DIAMOND ANTENNA

Antenna: DIAMOND X-30AN DIAMOND ANTENNA

Portables: TG-F7 KENWOOD

Portable: FT-50R YAESU

My station HF

Rig: KENWOOD TS-850S KENWOOD

If you have one of this rig you have to replace the back-up battery about each ten years, you will find here one of the existing tuto.

If your PLL unlock (symptom are whatever the reason, no more RX, the frequency disappear on the display and you hear the morse code DI DI DA, DI DA DI DI which is the code for U L “unlocked” The most likely cause is the VCO2, the trimmer cap gets flaky as it heats up or is oxidized. Control and adjust the voltage of this VCO2, If you have the TS-850 service manual go to page 98 and check step 8, It solve my and only problem I got with this rig.

Mic: KENWOOD MC60 KENWOOD

Mic: Astatic silver eagle ASTATIC

Rig: KENWOOD TS-690S KENWOOD

ICOM IC-706 MK2G (see the VHF section for more informations about this rig) ICOM

Speaker: KENWOOD SP-31 KENWOOD

Tuner 3KW: AA&A LTD (factory sk) beautiful piece of work

Power supply: ITC EP-925 ITC

Power supply: Pan International 25070 Pan International

Amplifier: AMERITRON AL-80BX AMERITRON

Coax switch: AMERITRON RCS-8V AMERITRON

Digital interface: DigitalMaster DataLink and many other one ZLP Electronics

Swr & power meter: DIAMOND SX2000 DIAMOND

Swr & power meter: YAESU YS-60 YAESU

Pc interface: KENWOOD IF-232C (RIP) KENWOOD

DSP: TIMEWAWE DSP-59+ (momentary not in use) AEA

Antenna rotor: YAESU G-600RC YAESU

Antenna: CUSHCRAFT A3S CUSHCRAFT

Antenna: SPIDERBEAM 12HD 40MTS FULL SIZE 1/4 WAVE

 

My SWL station

Receiver: Grundig satellit 800    A very good sounding short-wave receiver, on this one the synchronous detection really works and vastly improve short-wave reception under bad or severe reception conditions, as the FM part is also very good, this is my kitchen receiver.

Receiver: KENWOOD RZ-1 KENWOOD  ,no particular remarks on this one, quite good on almost all bands. Have to have it for personal reasons but I don’t use it at all.

Receiver: Lowe HF-225, I add this good receiver for some month, nice filter, nice sounding but even with the remote  control I add the too few memory make it not too keep.

Wide band receiver: AOR-5000a AOR , to my opinion an incredible wide band receiver. Good from VLF to 30MHz and extremely good from 30MHz to 3000MHZ, if you can get one in good shape at a reasonable price (look on ebay) buy it as you won’t be disapointed.

Wide band portable receiver: UBC3500XLT Uniden , fast and good handled wide receiver, perfect for on the go.

Wide band receiver: Fun dongle pro +, Waouh, if you take your laptop with you during holidays, don’t forget to take your FDP+ with, you only then need some antennas to listen to everything you can imagine. Add a free virtual cable in your PC and let run your favorite decoding software and listening same time for instance. At 180€ not very cheap but the sky is the limit .

Receiver: PL-660 TECSUN , my present number 1 traveling radio receiver. Qualities and price match perfectly.

Receiver: ATS-909 SANGEAN , was my favorite traveling receiver, still have it but now use Tecsun PL-660 with it synchronous reception.

Antenna AN-1: SONY ,used to use it, but not anymore, the AOR LA320 is by far better but also too expensive.

Antenna: PA0RDT mini-whip , good tiny antenna, very good prestation regarding the price.

Antenna: HDLA Active Wideband Loop Antenna , a very good magnetique loop.

Antenna: LZ1AQ magnetic loop , presently my favorite LF/HF RX antenna.

Antenna FRA 7700: YAESU , have it in my museum.

Antenna: AOR LA320 AOR , a real good one, only too pricey, don’t have the chance to test the several successors but knowing AOR I’m quite sure there as good or even better. I make a modification on mine to use 12 volt from power supply and save battery, no problem as there is plenty of room in the case to play. I also make some ferrite elements to match my wish, you can read more informations about it in my antennas’ projects sections.

Antenna: AN-200 TECSUN , can improve a lot medium-wave reception. More about this one at the antennas’ projects section.

 

My lab accessories

SWR analyzer: MFJ-259 MFJ

RX VECTOR ANALYST VA1: Autek research

LAntenna analyser AA-230PRO RigExpert

LCR meter: 5105 Peaktech

LCR meter: L/C meter IIB AADE

Antenna current probe MFJ-206: MFJ

SW/MW/LW Tuner MFJ-956: MFJ

Matchbox M27: ZETAGIRacal 9009

Dummy load DL61: ZETAGI

Frequency counter FC-2600: Peaktech

Multimeter M-3650: METEX

5KWs RF power sampler: Henry Radio

Oscilloscope 2465BDM 400MHz: Tektronix

Signal generator 2019A : MARCONI INSTRUMENT (SK)

Digital oscilloscope DS1102E : RIGOLPM6676 philips

Digital oscilloscope DS8102V : OWON

Deviation / modulation meter 9009 : RACAL DANA (SK)

Universal frequency counter PM 6676 with TCXO PHILIPS

10MHz GPS disciplined oscillator : G3RUH

 

Luxembourg

Auckland

Tokyo

Los Angeles

This page has been accessed

times since august,08,1998 (QSL.net membership)

since november,28,2011 (station reactivation)

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