PHILIPS

FM92E

Conversion

To

6 Meters

Part 3

Ver 4.2 - 08 Jun 2007

Rod McCosker VK2DOT

Philips FM92E Conversion to 6 Meters Part 3:

Rod McCosker VK2DOT

1: Weekly Procedures:

6th March 2007 - Lecture covers this document; what is needed, what we shall do, brief description of what will be done, etc.

13^th March 2007 – Upgrade your soldering techniques by Bruce VK2ZAD. This lecture will cover the file solderin.ppt.

20^th March 2007 – Tonight will cover the following procedures:->

• Members to bring along:-
1. Small & A4 GLAD bags.
2. No 1 Philips Screwdriver to remove FM92E covers.
3. In-Line Fuse holder – VK2ZAD will be supplying.
4. Fuse 8 or 10 Amp. For fuse holder.
5. 12 Volt 10 Amp power cable.
6. Old tooth brush for cleaning.

• Transceivers will be given out.

• Remove cover on Synthesiser board side from the FM92E Transceiver, this is the side closest to the two sockets at the rear of the FM92E transceiver. Then mark the cover with your call-sign, then place it & the cover’s screws into their GLAD bags & mark your Glad bags with your call sign. Should be a minimum of 4 screws.

• Note the center frequency or single frequency your transceiver was working on.

• Undo screws, holding the Synthesiser board down. Swing Synthesiser board out.

• Remove can covering the EPROM socket. [4 screws] Place Can & Screws into Glad bag.

• Solder single fuse holder onto positive power lead [red cable from transceiver; NOT red lead with black dashes]. Or; remove fuse section on earth lead from transceiver, then connect this section via fuse to the positive section of the red wire from the transceiver. * This can be done before EPROM can removal.

• Solder 12 Volt black cable power cable onto the earth lead from the transceiver [red with black dashes] and red onto end of fuse. * This can be done before EPROM can removal.

• Plug in Test EPROM 6mtest1l.bin, 6mtest2r, 6mtest3l or 6mtest4r see page 3 on “Files associated with this project”. For testing the FM92E Transceiver from 68-88 MHz. EPROM notch points away from hinges of Synthesiser board.

• Apply 12 Volts to the FM92E Transceiver. Check that audio emanates from the speaker

• With Marconi VHF Signal Generator check that FM92E receiver mute works under 4 micro Volt on test frequency and note this reading.

• Connect VHF Power Meter and press PTT button so a power out is registered on the Power Meter. Note the power reading.

• Disconnect Power.

• Remove EPROM.

• Plug in EPROM 6m1loc.bin, 6m2rem.bin, 6m3loc.bin, 6m4rem.bin, 6m5.bin, 6m6.bin, 6m7loc.bin or 6m8rem.bin See page 3 on “Files associated with this project”. to EPROM socket. EPROM notch points away from hinges of Synthesiser board.

• Replace EPROM tin box over EPROM, 4 screws.

• Screw down the Synthesiser board.

• Replace cover for Synthesiser board side.

• Clean up FM92E transceiver. * This can be done at any time.

27^th March 2007 – Break, but group can continue on with last week’s procedure, if not finished, eg fuse holder.

03^rd April 2007 –

• Recheck that your EPROM receiver frequency is correct, NOT off frequency as some people had last Tuesday nite. If they were off-frequency [Ken (VK2KJ) will recheck your FM92E transceiver again], we will change your EPROM. Those that were given the short FM92E, we will change them back to the long FM92E that was converted from the batch of FM91E’s.

Ken, VK2KJ will recheck that your FM92E is on the frequency, again; then

10^th April 2007 – Easter Break. The Rev Bruce, VK2ZAD has to recover from chocolate over eating.

17^th April 2007 –

• Members to bring along:-
1. Soldering Iron. [only if you have one]
2. De-Soldering Iron. [only if you have one]
3. 0.63mm [B&S 22] Enamelled Copper Winding Wire. [Leon has some spare wire!!!!]
4. Paper if they want a printout of tonight’s operation. [approximately 10 pages]

• Remove cover on Receiver board side from the Philips FM92E Transceiver, this is the side opposite from the two sockets at the rear of the FM92E transceiver. Then mark the cover with your call-sign, then place it & the cover’s screws into their GLAD bags & mark your Glad bags with your call sign. Should be a minimum of 4 screws.

• From http://vk2afy.dyndns.org/6mconv/6mfiles.htm site, download the document pages from sections 19 & 20 of file 6m_con.pdf, or from the directory “D:FM92E Conversion to 6 meters” of the main computer in the operations room.

• Do VCO Change – See section 19 & 20, starting on page 20 of this document.

24^th April 2007 – ANZAC pre-day break.

01^th May 2007 – Overview of conversion, continue with week 17^th April 2007.

08^th May 2007 – Break to fix De-Soldering Station.

15^th May 2007 – Break to fix De-Soldering Station.

22 May 2007 – Break to fix De-Soldering Station.

05^th June 2007 – Continue with VCO change.

12^th June 2007 – Continue with VCO change.

19^th June 2007 – Continue with VCO change.

26^th June 2007 –

03 July 2007 -

Start Receiver/Mixer Module change.

• Members to bring along:-
1. 4 of capacitors.
2. 0.80mm [B&S 20] Enamelled Copper Winding Wire. [Leon has some wire!!!!]

• From http://vk2afy.dyndns.org/6mconv/6mfiles.htm site, download the document pages from sections 21 & 22 of file 6m_con.pdf, or from the directory “D:FM92E Conversion to 6 meters” of the main computer in the operations room.

• Do Rx RF Amp/Mixer Change – See section 21 & 22, starting on page 29 of document 6m_con.pdf.

Continue with week 08^th May 2007.

Continue with week 08^th May 2007.

Continue with week 08^th May 2007.

Video Movie.

Start Tx PA Change.

Continue with week 12^th June 2007.

- Continue with week 12^th June 2007.

10 July 2007 - Continue with week 12^th June 2007.

17^th July 2007 - Continue with week 12^th June 2007.

24^th July 2007 - Continue with week 12^th June 2007.

31^th July 2007 - Continue with week 12^th June 2007.