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Block diagram of my Amateur Station

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  #1  
Old 01-27-2009, 12:57 PM
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Default Block diagram of my Amateur Station


I don't know if anyone is interested, but it has been a slow day at work today so I decided to make a block diagram of my station. This will actually be useful for troubleshooting/documentation down the road. It's just the operating station. If I'm bored tomorrow, I may make one of the tech bench.



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Old 01-27-2009, 01:27 PM
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Suite!

Hope you get them coax switches right all the time!

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Old 01-27-2009, 01:35 PM
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Yeah, I've made that mistake a couple times. I printed out a big label and stuck it to the desk that says "CHECK THE COAX SWITCHES!" I even miss that every once in a while.

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Old 01-27-2009, 03:21 PM
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Now that I look at it again, I notice that I didn't show the station ground. Well, everything shares a common ground buss made from 2" wide copper sheet metal to an outside ground. It's also tied to the house ground (in a cheesy way, but it's the best I could do).

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Old 01-27-2009, 11:34 PM
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Hi Moleculo:

I have a few questions if you don't mind answering them.
I'm not questioning the logic or your design; I just know so little about Ham that I'm trying to learn more.

1) Your duplexer between the 2m/440 radio and the two antennas. Just how is a duplexer work? Is it like a passive speaker crossover?

2) How can these VHF/UHF antennas hook up to your IC-746? Does the Icom do VHF/UHF as well?

3) I notice that you don't use a conventional CB antenna for your Grant. You are using the Cushcraft R6000 and an antenna tuner. Does this work out well; or is it a compromise? How come you you don't use the dipole for the CB too? Or won't it tune up on 11 meters. I've always wondered about that one.

4) You aren't using a rigblaster/pro. Don't like them - or ? And you have two sets of audio cables between the Ham rig and the CAT. I don't know squat about digital modes but I am considering the Rigblaster Pug 'n Play. Too little or just not good enough? It's alittle confusing at this point, as I have a computer and want to be able to hook it all up.

5) You use a lot of outboard DSP for the Ham rig. Isn't the Icom efficient enough - or does it fall on its own face?

6) What is a 'tuning pulser'?

I'm not afraid to admit that I don't know this stuff, but I'm trying as fast as I can to make up the difference.
Thanks in advance!
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Last edited by Robb; 01-28-2009 at 12:11 AM.

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Old 01-28-2009, 12:23 AM
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I did a bit of research in the mean time.
Yes the 746 is able to go all the up to 144Mhz - got it.
Nice radio; but I'm not sure why all of the DSP gear is needed - unless I am right by thinking that the Icom DSP isn't all that it is cracked up to be.

The antenna pulser is used to fine tune the power amp so that it doesn't destroy itself - or the tubes. I'm not sure how it is used, but I found a few schematics that show how to BIY.

Saying that the duplexer is similar to a speaker crossover is a fair comparison. I found a schematic for one as well, and it is made up of capacitors and coils in paralell and series on either side of the input power. Check.
Right?

I still need to know about the antenna being used for the Grant. As I am ready to buy a dedicated 5/8 wave ground plane for my shack. If I could use the money twards a Ham antenna instead, that could save me some serious money. That is still an open question.

The question is still open about the Ham dipole for the CB use - too.

I've read on eHam that the Rigblaster Pro only got a 4.1 rating with only 30 reviewers. While the Tigertronics cost 1/3 less, got a 4.8 rating, and had almost 120 reviewers. There is a lot that I need to fill in the blanks here, as I'm quite certain they aren't even comparable to each other. They aren't capable of doing all of the same things, as the Tigertronics is simpler - yet preferred almot 4 to 1 - if that really means anything. Only one of the things out of many that is still confusing me on this aspect of Ham radio.
Digital seems to hold of a lot of fun and practical uses. I'm just not sure how to spend my money wisely at this point; so I will wait untill I know a lot more about it.
Quote: "...A RIGblaster pro for only $299.95, using a computer and appropriate software, replaces the following station accessories:

A mic. equalizer/processor up to $250
A rig control interface up to $130
A multi mode TNC up to $550
A contest Digital Voice Keyer up to $180
A DSP receive filter up to $400
A receive enhancer up to $170
A DX beacon clock with receive up to $100
An Internet remote base up to $ 65
A sound card interface (of course) up to $140..." -end quote

Sounds like a lot of hype to me; or do they have all of this on the ball?
And if all of that is true; then why aren't more Hams using this gear?
http://www.tigertronics.com/
http://www.westmountainradio.com/RIGblaster.htm

Also, any clarifications would be appreciated!
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Last edited by Robb; 01-28-2009 at 01:03 AM.

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Old 01-28-2009, 02:36 AM
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Pics?

Or a link to them?
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Old 01-28-2009, 05:21 AM
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did i miss the straight key?

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