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| Reviews Summary for N8LP/TelePost Inc.- LP-100 Digital Vector Wattmeter |
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Reviews: 81
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Average rating: 5.0/5
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MSRP: $335 kit / 435 assembled
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Description: LP-100A Digital Vector wattmeter with complex impedance
display (R+jX) / autoranging 50mW to 3KW (5 & 10KW options) / bright,
fast Graphic VFD display / simultaneous display of POWER and SWR (or REF
PWR) in numerical & bargraph form. Additional displays for dBm, RL,
compression & calibrated field strength in dBm. Automatic band-by-band
power correction with built-in frequency counter / peak hold mode /
flash upgradeable firmware / serial interface / free control, monitoring
and plotting software / SWR alarm / NIST traceable calibration / much
more. Available as kit or assembled.
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More info: http://www.telepostinc.com/
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write your own review of the N8LP/TelePost Inc.- LP-100 Digital Vector Wattmeter.
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W1UJ
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Rating: 5/5
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Dec 18, 2008 17:28
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Excellent.
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Time owned: more than 12 months
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There is not much more that I could write about my 1st generation LP-100 that hasn't already been written except for the regret that I forfeit the satisfaction of building it from a kit.
I use this for antenna measurements and tuning and for measuring output from Softrock mini SDR transmitter kits all the way up to my QRO amplifiers during long contests.
Top quality construction, and assembly with no nonsense.
Quick SWR protection, good display response and appearance.
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N7VXD
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Rating: 5/5
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Dec 5, 2008 11:22
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OUTSTANDING WATTMETER, THE BEST THERE IS!
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Time owned: 0 to 3 months
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After researching several meters, I was impressed with the additional features of the LP-100A, so I ordered the kit from Larry, N8LP, and went to work. My soldering skills were a bit rusty, but I managed to get through the assembly which which turned out to be an enjoyable experience. WARNING! Don't get ahead of the sequence of Larry's instructions, or you may regret it later on. I ended up de-soldering some delicate componets which didn't help matters at all. But Larry was always available to help me through process. I also sent the wattmeter back and had him calibrate the unit, a worthwhile move.
How do I like the LP-100A? This wattmeter has exceeded all my expectations and far exceeds the competition in features and quality, and the customer service is second to none. The LP-100A is flash-upgradeable for future enhancements and features computer control and Vector Graphing through computer software. This alone is a real bonus. Get one, you won't regret it!
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W4LTD
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Rating: 5/5
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Nov 12, 2008 12:08
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As Good As They Get!
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Time owned: 3 to 6 months
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The LP-100A is truly the Rolls-Royce for VSWR analysis & power metering. Great build and above-par customer service, Larry will go out of his way to back this product!
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N8BA
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Rating: 5/5
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Nov 8, 2008 11:14
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Great Quality and Fun to Build!
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Time owned: 0 to 3 months
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I enjoyed building the LP-100A. The instructions were not overly detailed but left no doubt as to what needed to be done.
During construction, electrical checks performed before the several main circuitry sections were tied to power would have localized any shorted power supply problems. None occurred and the meter operated on the first power up.
A Calibration Menu supports a couple of simple calibration steps (for power, resistance, and frequency).
The built-in default settings for all of the more obscure parameters are sufficient for any imagineable amateur activity. (However, the purist can check or set just about any of them by making a few simple test loads and delay lines and doing a little touch up.)
The display allows power and load impedance to be displayed in a variety of formats, with a bar graph. The last measured SWR can be retained on the display during receive. A callsign screen-saver is a nice touch.
Provided PC software will graph antenna parameters, including making Polar Plots.
The only suggestion that I could make for future versions of the LP-100A would be to have a USB port instead of the RS-232, and to allow the unit be powered by same.
Bill N8BA
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HI8RWD
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Rating: 5/5
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Nov 6, 2008 20:38
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Excelent
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Time owned: more than 12 months
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I was looking for the best meter some years before,I looked to all possible option, The LP-100 was my choice, having other good meters, I found the Larry's LP-100 meter superior in all respect.
I got more than I pay for it.
Great service too.
tnx Larry.
Rafelito/HI8-RWD=KJ4-DTS
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K9IUQ
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Rating: 5/5
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Sep 22, 2008 18:39
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Feature Packed
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Time owned: 3 to 6 months
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I needed a high power meter with an alarm circuit to protect Big AL, my new Al-1500 amplifier. Looked at Array Soulution Powermaster and the LP-100a. The LP-100a has more features. Has dual bargraph which is very useful. Also comes with software for plotting SWR, etc and even does the Smith Chart. Very useful and interesting for antenna experimenting.
This class of meter is very expen$ive.However it will protect your even more expensive amp from dumb mistakes. It also will keep you legal as it is very accurate. One of the best accesories I have bought in 48 yrs of hamming. Well designed and highly useful.
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G0MJW
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Rating: 5/5
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Sep 22, 2008 06:40
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Revealing
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Time owned: 0 to 3 months
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This type of meter is something anyone using a linear amplifier should have. Apart from the accuracy and the high VSWR protection features to protect the PA, this meter is very revealing.
The display shows forward and reverse power graphically and in figures. It has a peak hold feature that responds instantly to potentially damaging power spikes, ones that you will not see with a normal meter yet which could see off your PA or at best cause splatter. It allows you to measure your transmit duty cycle and peak to mean signal ratio. It can be programmed to generate an alarm if the VSWR exceeds a threshold and if you route your PTT line through it, it will drop the PTT for you.
There is a computer interface which allows you display the meter remotely - this was one of the reasons I bought it.
I built mine from the kit. I did not enjoy winding the detector coils, but everything else was easy.
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EI3GSB
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Rating: 5/5
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Aug 6, 2008 07:30
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LP-100A the ONLY meter you'll ever need
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Time owned: 0 to 3 months
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I got my LP-100A in June and I'm delighted with the meter. The obvious advantage of using this type of meter is that you always have a visual presentation of your SWR and power output and the inclusion of an SWR alarm (which is user configurable) is, although not a new idea, a great addition to the meter.
Since I've had mine I've barely used it other than a power/SWR meter but I know it's capable of much more. When the VHF coupler is available I'll get that too.
All in all the LP-100A is a great addition to the shack and offers peace of mind when monitoring your SWR and output levels.
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W5AO
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Rating: 5/5
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Jul 24, 2008 17:35
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Excellent
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Time owned: 0 to 3 months
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Accurate, well built, easy to use, good looking. One dit gives accurate peak measurement, worth the money on saved TX tubes alone. Valued addition to this shack
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W0JX
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Rating: 5/5
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Jul 3, 2008 20:29
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A Superb Tool
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Time owned: 0 to 3 months
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I bought the LP-100A at Dayton 2008 and purchased the assembled and calibrated unit. It was shipped within three weeks and came with the prepunched holes in the back for the second RF coupler. So far, I am extremely pleased with my choice.
My first use was for a QRP experiment where I was able to crank the 100 watt exciter output down to 100 milliwatts! It also revealed that my old Mirage MP-1 was reading about 250 watts low on the 2 KW scale. I recalibrated all three MP-1 scales to the LP-100A. I also have used it to measure feedline loss accurately of some older coax at 50 Mhz.
My most recent tests were to measure SWR changes of my 5 element, 6 meter beam as I experimented with element placement. I took the LP-100A up on the roof and powered it with a small 12 volt lead-acid cell.
The LP-100A has many more useful functions that I have yet to use. If you want an accurate, multi-function wattmeter and SWR bridge with impedance and phase readout, buy this unit. You won't be disappointed!
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