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Reviews For: WELZ SP-600

Category: SWR & Wattmeters & Dummy Loads

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Review Summary For : WELZ SP-600
Reviews: 2MSRP: ?
WAttmeter/SWR Meter that covers 1.6 to 500 mhz.Has 3 sensors
for which are selectable by 3 buttons on the front of the
meter.Also has 3 power ranges(20,200,& 2000 watts).It's an
average reading lighted meter.
Product is not in production
More Info: http://
# last 180 days Avg. Rating last 180 days Total reviews Avg. overall rating
WA4RDX Rating: 2018-06-28
Outstanding value / extremely accurate Time Owned: more than 12 months.
I purchased one of the Welz SP-600 meters way back in March of 1986. I bought it NEW at a hamfest. I had done some research on these and decided on this model for the fact that it has separate sensors for three different frequency ranges built in for increased accuracy across the amateur bands. Essentially they can be viewed as an HF, VHF, and UHF sensor. This model has three power ranges as well, covering most any typical application. The power ranges are 20 Watts, 200 Watts, and 2000 Watts. Only sensor 1 for the HF range functions on the 2000 Watt range. When I purchased this unit, a friend purchased a Coaxial Dynamics at the same time. We compared readings between the two, and the Welz was extremely close to the CD. This meter is STILL in service in my shack, and a couple of years ago I made another check against a Bird 43 using 250 Watt and 1000 Watt elements into a dummy load. My transceiver is a Kenwood TS-990, and the Bird meter showed the wattmeter on the Kenwood to be spot on, and the Welz extremely close, well within the published 10% accuracy, and closer to 5%. I also checked the 2000 watt scale of the Welz against the Bird with the 1000 watt slug. Using the Heathkit SB-201 amplifier, I took note of the power level into the dummy load as well. The Bird showed 750 Watts out. All readings were taken at 14.200 MHz. I later spent some time pouring over the schematic of the Welz, and found that it was well designed for accurate calibration. All sensors and ranges independently adjustable, as well as an independent Reflected power adjustment for each range as well. I performed some minor adjustments on the Welz, and have found that it seems every bit as accurate as a Bird 43, or Coaxial Dynamics. If you spot one of these and it appears to have been taken care of, I suggest you grab it! My purchase price for the NEW unit in 1986 was $145.00 plus tax. That's 32 years of reliable service and counting!
W4KVW Rating: 2014-03-02
VERY NICE! Time Owned: 0 to 3 months.
I picked this meter up at Orlando Hamcation in 2014 & could find very little information about it.I finally found a copy of the owners manual & ordered it.The meter now reads PEP after adding a K4DPK PEP board.It is a very nice looking meter & is easy to read & use as well with it's lighted display.I needed a PEP reading wattmeter for use on 6 meters with at least a 1 Kilowatt scale to use with my ICOM PW-1 & the WELZ SP-600 now fits my needs perfectly.Very well built & looks GREAT as well.I will be keeping it & would say with the PEP upgrade that most anyone would find it VERY acceptable for use in their station as well.The power scale on VHF & UHF is limited to just 200 watts other than the 6 meter VHF band.{:>)