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Old 5th Nov 2020, 10:56 pm   #1
Sparky67
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Default Philips FM1100 Question

Hi all,

I am currently setting up an FM1100 with a standard display for use on 4m and I seem to remember it was possible to have a 2-digit code in the display as well as the channel number, so Ch 01 could also display say, 45, to the left.

Is it possible, and if so, can anyone explain how to do that please, using a PDP?

Many thanks.

Martin
G4NCE
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Old 7th Nov 2020, 3:39 pm   #2
TALKINGWITHPYE
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Default Re: Philips FM1100 Question

Hi Martin, I saw your posting on this topic in the Marconi test instrument group site and replied on that site but here goes again. Those numbers are either CTCSS codes which are selected by using the user defined ctcss function. This is parameter 335 set to 1 and a button along the row of function buttons is programmed with 52 which switches ctcss on/off and another button programmed with 53 which brings up the two digits which relate to the tones sent and looked for on receive. 01 is 67hz 02 is 71.9 03 is 74.4 04 is 77.0 hz 05 is 79.7hz 06 is 82.5 hz 07 is 85.4 hz 08 is 88.5 hz 09 is 91.5 hz 10 is 94.8 hz 11 is 97.4 hz 12 is 100 hz 13 is 103.5 hz 14 is 107.2 hz 15 is 110.9 hz 16 is 114.8 hz 17 is 118.8 hz 18 is 123.0 hz 19 is 127.3 hz 20 is 131.1 hz 21 is 136.5 hz 22 is 141.3 23 is 146.2 hz 24 is 151.4 hz 25 is 156.7 hz 26 is 162.2 hz 27 is 167.9 hz 28 is 173.8 hz 29 is 179.9 hz 30 is 186.2 31 is 192.8 hz 32 is 203.5 hz 33 is 210.7 hz 34 is 218.1 hz 35 is 225.7 hz 36 is 233.6 hz 37 is 241.8 hz 38 is 250.3 hz.
The other sinareo is if sellective calling is programmed. In selective calling there are 5 tones sent in sequence by the base station and received by the mobile, the mobile will sound an alert when it recognises these codes. Other functions can be executed from codes received such as resetting the called indicator and muting the rx. The mobile user can select two didgits to send which can have prearranged meanings so say 364 is the identification code for the vehicle and 36401 means I am ready for duty, then further into the day 36423 could mean I have completed my 23rd delivery and 36460 could mean I am on a meal break and 36472 could mean I have finished for today. Other codes could mean I need help ie: broken down or had an accident.
I see how you would want to use these digits for indicating the suffix frequency but I do not see how you could do this as getting theese digits will affect the function of the radio.

Dave (ex Philips engineer)
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Old 7th Nov 2020, 5:06 pm   #3
Jon_G4MDC
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Default Re: Philips FM1100 Question

I suspect that could have been done by running non standard software.

Does anyone know how to make the squelch behave properly yet?

It was easily the worst I have ever encountered and it defied all my attempts to fix.
All mine went > out as a result.
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Old 7th Nov 2020, 9:38 pm   #4
Sparky67
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Default Re: Philips FM1100 Question

Thanks gents. I did post in the Marconi test gear group Dave, although that was a Marconi comment. The question on this set was in the FM1000 group, which I had completely forgotten about since it moved over from Yahoo...!

Your reply is very comprehensive Dave, thank you for that. I will have to sit down and digest the info with the PDP and a radio I think.

A reply has also been received direct from one of my old colleagues, Tony Rowsby, another ex-Pye Regional Engineer, with a slightly different method suggested, which I will also have to try out with the PDP.

At least this radio is working conventionally on 4m now after receiving it as an E-band trunker which had been completely wiped, including all of its cal parameters...!

Thanks again,

Martin
G4NCE
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Old 8th Nov 2020, 8:23 am   #5
TALKINGWITHPYE
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Default Re: Philips FM1100 Question

Ah you received the radio as a trunker, that is another story, I thought it was a standard lcd E band set. I never got far into trunking as I took voluntary redundancy after 38 years in 2008. On another tack do you know of anyone stripping a Marconi 2955, I have one belonging to a friend with a duff AC1 board but I mentioned I was looking for one of theese boards on the Marconi group and so far no results. As I am in Northern Ireland I would not want to go to the expense of a complete unit sold for spares, nor would my friend so just a good board would be helpful.

All the best
73's
Dave GI8LCJ
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Old 8th Nov 2020, 11:30 am   #6
Sparky67
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Default Re: Philips FM1100 Question

Just for completeness should anyone with the same question look at this thread in the future, Tony suggested...

The secret is to program a fixed status but with no means of using it! (parameter #143) as the freq prefix (eg 70).
The channels are programmed so that the first 2 digits after the decimal point (eg. 70.450MHZ) is programmed into channel 45.

Martin
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