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Search took 0.01 seconds. Search: Posts Made By: fairbank56
Forum: Marine Electronics 21-10-2014, 19:02
Replies: 45
Views: 5,340
Posted By fairbank56
Re: Question for the Electronically Savvy

Ditto!
Forum: Marine Electronics 21-10-2014, 18:32
Replies: 45
Views: 5,340
Posted By fairbank56
Re: Question for the Electronically Savvy

The contact pad is obviously ok because pressing the button makes the unit come on. The problem is that it shuts off again if the button is released. I can however confirm that the CaiKote is great...
Forum: Marine Electronics 21-10-2014, 16:48
Replies: 45
Views: 5,340
Posted By fairbank56
Re: Question for the Electronically Savvy

If you routinely serviced this stuff, you would see them. The M506 that I mentioned that has over 60 discrete transistors also has 3 mechanical relays. They have their applications and are still...
Forum: Marine Electronics 21-10-2014, 16:04
Replies: 45
Views: 5,340
Posted By fairbank56
Re: Question for the Electronically Savvy

Not "could well be", it's a fact, and I wasn't trying to help the OP, I was disputing the claim. :rolleyes:

Eric
Forum: Marine Electronics 21-10-2014, 15:14
Replies: 45
Views: 5,340
Posted By fairbank56
Re: Question for the Electronically Savvy

I quoted svfinlandia, who claimed "I haven't seen a discrete 3 Pin transistor in a piece of electronic equipment in a long time", but the point is, discrete transistors are still widely used in...
Forum: Marine Electronics 21-10-2014, 14:30
Replies: 45
Views: 5,340
Posted By fairbank56
Re: Question for the electronically savvy

The discrete transistor is alive and well. The modern Icom M506 VHF/AIS has over 60 of them as does the M802 SSB. Still commonly used elsewhere in marine electronics power supply circuits, power...
Forum: Marine Electronics 22-05-2014, 07:25
Replies: 6
Views: 1,823
Posted By fairbank56
Re: Kaito KA1102 question

Because weatherfax frequencies are listed as assigned frequencies which are at the center of the band. Most SSB radio's display and require entering the carrier frequency which for weatherfax...
Forum: Marine Electronics 01-04-2014, 05:34
Replies: 30
Views: 4,318
Posted By fairbank56
Re: DSC Distress Message Test

It's the idiot factor. Idiots, nitwits, morons, sheeple, whatever you like to call them. The Coast Guard is receiving approximately 100 DSC distress calls per month. 90% of them have no position...
Forum: Marine Electronics 29-03-2014, 18:32
Replies: 9
Views: 6,396
Posted By fairbank56
Re: Icom M710

With the field programming software EX1726.exe you can program the ITU simplex channels 18-1 thru 18-9 with the ham bands. These channels are usually blank on the M710. Once radio is opened up and...
Forum: Marine Electronics 10-03-2014, 06:37
Replies: 16
Views: 7,278
Posted By fairbank56
Re: Dumb DSC Question - Distress without MMSI

Well, I just tested an Icom M502 (circa 2000) and it will not transmit a distress call without an ID number programmed and I just happen to have an Icom M127 with DSC board (circa 1997) (first Icom...
Forum: Marine Electronics 09-03-2014, 19:59
Replies: 16
Views: 7,278
Posted By fairbank56
Re: Dumb DSC Question - Distress without MMSI

So....where's the proof that it doesn't meet ITU DSC specs and is capable of transmitting a DSC distress call without a programmed ID?

Eric
Forum: Marine Electronics 09-03-2014, 17:10
Replies: 16
Views: 7,278
Posted By fairbank56
Re: Dumb DSC Question - Distress without MMSI

Came across an article from a couple years ago about the Coast Guard complaining about the number of false DSC distress calls. About 100 a month, 90% with no lat/lon data and 60% using unregistered...
Forum: Marine Electronics 09-03-2014, 15:56
Replies: 16
Views: 7,278
Posted By fairbank56
Re: Dumb DSC Question - Distress without MMSI

Name one model that does not.

Eric
Forum: Marine Electronics 09-03-2014, 14:34
Replies: 16
Views: 7,278
Posted By fairbank56
Re: Dumb DSC Question - Distress without MMSI

I know for a fact that Icom and Standard radios will not transmit distress calls without a number programmed. Iv'e tried it in controlled test environment. The calls you received either had bogus...
Forum: Marine Electronics 09-03-2014, 13:27
Replies: 16
Views: 7,278
Posted By fairbank56
Re: Dumb DSC Question - Distress without MMSI

They will not transmit any DSC data without an MMSI programmed as per ITU recommendations.

Eric

12.4 MMSI
DSC equipment should not transmit any DSC call until own ship’s MMSI allocated to...
Forum: Marine Electronics 24-02-2014, 17:59
Replies: 10
Views: 2,775
Posted By fairbank56
Re: Icom 710

The 710 and 802 can be used with either tuner (130/140). The 802 has lousy average talk power as compared to the 710. The 802 is advertised as having better average talk power due to it's audio...
Forum: Marine Electronics 04-01-2014, 06:51
Replies: 12
Views: 1,631
Posted By fairbank56
Re: SSB reception

The smaller cables current carrying capacity.

Eric
Forum: Marine Electronics 22-12-2013, 16:10
Replies: 11
Views: 1,781
Posted By fairbank56
Re: Icom AT141 Exposed Location?

I was just joking ;). Iv'e installed and serviced lots of these tuners. Iv'e come across a few which were mounted horizontally that were full of water and completely rusted/gunked up inside. I would...
Forum: Marine Electronics 22-12-2013, 09:01
Replies: 11
Views: 1,781
Posted By fairbank56
Re: Icom AT141 Exposed Location?

Wonder why they have a designated "water drain screw" on them :confused:

Eric
Forum: Marine Electronics 13-12-2013, 07:56
Replies: 5
Views: 2,438
Posted By fairbank56
Re: VHF Static After Reception

That noise isn't "broadcast", it's receiver noise that is normally suppressed through the receiver squelch circuitry. Try turning your squelch up a little bit. If that doesn't work, turn everything...
Forum: Marine Electronics 08-12-2013, 17:33
Replies: 36
Views: 5,206
Posted By fairbank56
Re: ICOM 802 Power Draw When Off

That is in reference to the RF ground. Even though they are connected, don't rely on the engine block and/or DC battery ground as your RF ground.

Eric
Forum: Marine Electronics 08-12-2013, 09:47
Replies: 36
Views: 5,206
Posted By fairbank56
Re: ICOM 802 Power Draw When Off

The M802 is just one of many that comes to mind.

Eric
Forum: Marine Electronics 31-10-2013, 13:08
Replies: 22
Views: 3,432
Posted By fairbank56
Re: M802/AT140 and occasional high SWR

You mean like this? Iv'e done a few like that. It works quite well and is a lot sturdier than it looks and you can certainly see for sure if you have a shield connection problem :)

You might want...
Forum: Marine Electronics 31-10-2013, 12:08
Replies: 22
Views: 3,432
Posted By fairbank56
Re: M802/AT140 and occasional high SWR

Which model is that?



The AT-140 also saves the tuning setup in it's memory. The only problem being there is no backup battery, only a capacitor is used so if you don't use the radio for a...
Forum: Marine Electronics 31-10-2013, 06:57
Replies: 22
Views: 3,432
Posted By fairbank56
Re: M802/AT140 and occasional high SWR

This is incorrect. The control cable wires do not directly operate any relays in the tuner. All that is done by microprocessor control in the tuner. The control cable wires supply power to the tuner,...
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