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Author Topic: health kit hm-102  (Read 5749 times)
KD0ZBC
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Posts: 27




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« on: February 27, 2014, 11:12:21 AM »

My Elmer has one for 50 bucks is this a good meter to start out with ??  Thanks
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KB4QAA
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« Reply #1 on: February 27, 2014, 11:31:20 AM »

Sure, they are good power/swr meters.  You might want to go through it and check the components for correct value in case they have drifted over the years. 
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KA4POL
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Posts: 1996




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« Reply #2 on: February 27, 2014, 10:01:23 PM »

Modern SWR meters do have some advantages. For information on the HM-102 search for vr_apl_006.pdf‎ and read the document. You may be lucky to get one in an auction for a lower price  Wink
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K7MEM
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« Reply #3 on: February 28, 2014, 03:28:23 AM »

My Elmer has one for 50 bucks is this a good meter to start out with ??  Thanks

Yes, it is a good SWR/Power meter but, IMHO, $50 is a little high unless it is in excellent condition with no scratches on the meter face. I usually see the HM-102s at ham fests for $35 to $40. I have two HM-102s and a HM-2102 (VHF version). I like the nice big meter and the fact that the sensor is remote from the readout. But I find it a little clumsy to read SWR.

In the SWR mode, the control on the right is pulled out and then adjusted for full scale. Then you push in the control and read the SWR. I have always found that the control is loose and changes when you push it in. I'm never sure that I am getting an accurate reading, but in reality, close is really good enough.

Part of that problem is that I like the meter to be on the left of my rig. But I am right handed and and my left hand doesn't work as well as my right hand.

I also find the 2000 Watt position useless for my setup. I don't have any equipment that would exceed the 200 Watt setting. I have considered modifying that position to do a peak reading.

The advantage of many new SWR/Power meters is that they read SWR directly, without any messing with controls. The disadvantage is their cost.
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Martin - K7MEM

http://www.k7mem.com
KD0ZBC
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Posts: 27




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« Reply #4 on: February 28, 2014, 04:29:31 AM »

What would be a nicer newer one with in reason ?? Thanks for all the help guys ....I will hit  him with 40 bucks  ...lol...

  Set up is Kenwood 570s and All-811 ....
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KA4POL
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Posts: 1996




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« Reply #5 on: February 28, 2014, 05:50:23 AM »

Just hope he is not in this forum  Grin
It is difficult to make recommendations for one particular meter. Some may not agree, some may. I think the Daiwa CN-101L might be a good solution: http://www.eham.net/reviews/detail/413
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WB8VLC
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Posts: 120




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« Reply #6 on: March 01, 2014, 09:37:21 PM »

as others said they are fine meters; however the VSWR CAL POT becomes intermittent and it effects VSWR measurements.   The RF power measurement isn't affected by this dirty POT issue.

The fix is a new pot or spraying the existing pot with contact cleaner.

If you do buy it have your friend go thru the VSWR measurement and watch closely when he pulls the right control/pot knob outward and sets the full power calibration to full right deflection. 

If the meter jumps around when he performs the VSWR CAL then make a 10 or 15 dollar offer and buy some electrical spray cleaner.
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KD8GEH
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Posts: 466




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« Reply #7 on: March 03, 2014, 06:48:44 AM »

I have several of them. Have to be calibrated .. kinda ugly. Smiley

I paid 20 for my first one, then 5 each for the other two at Hamventon.  I did blow one (diode) on HF running 650 watts. Remember how old they are, you may be better off finding a cheap tru-rms wattmeter-SWR bridge.

73 and welcome

KD8GEH  Dave
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KD8GEH
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Posts: 466




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« Reply #8 on: March 03, 2014, 06:58:01 AM »

http://www.rffun.com/catalog/meters/1889.html

Ops, this is what I have with my 811H.   73
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KJ7WC
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« Reply #9 on: March 03, 2014, 12:16:57 PM »

... and if you like BIG meters, look at these: http://www.rffun.com/catalog/meters/2140.html

I've got a CN-801HP, and it's taller than most radios! I like big, crossed-needle displays.  Grin
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WD4CHP
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Posts: 147




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« Reply #10 on: March 03, 2014, 03:39:14 PM »

To correct the accuracy of the HM-102, replace the forward/reverse switch with a spdt switch separate from the SWR SENSE control.

This should have been used in the original enginering of the product.

This can be done without physically modifying the case.
« Last Edit: March 03, 2014, 03:49:35 PM by WD4CHP » Logged
W8JI
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« Reply #11 on: March 03, 2014, 04:00:24 PM »

My Elmer has one for 50 bucks is this a good meter to start out with ??  Thanks

You really want a true peak reading meter for SSB use.

That meter came out when a lot of stuff was AM, and long before the FCC changed regulations to all be in peak output power.
It is out of date and pretty much useless for modern methods of reading power.
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KD0ZBC
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Posts: 27




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« Reply #12 on: March 03, 2014, 05:51:50 PM »

That's what i was thinking ...Thanks
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WA8UEG
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Posts: 354




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« Reply #13 on: March 03, 2014, 06:21:27 PM »

I have a few of them, I modified one for reading PEP that was in a QST article a while ago. It works very well & is a simple mod.
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KD0ZBC
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Posts: 27




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« Reply #14 on: March 04, 2014, 02:36:02 AM »

Going with the AWM-30 , Thanks for all the help ....
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