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Reviews Categories | Amplifiers: RF Power - 6M/VHF/UHF+ | Microset SR200 Help

Reviews Summary for Microset SR200
Microset SR200 Reviews: 6 Average rating: 4.5/5 MSRP: $300
Description: 144 MHz, 12v, 200w output, solid state linear amplifier.
Product is in production.
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G8RBW Rating: 5/5 Aug 20, 2017 10:19 Send this review to a friend
Best value and very reliable  Time owned: more than 12 months
This is probably the cheapest decent 200 watt linear for 2m. I owned one for three years or so and never had any problems with it but I was careful not to overdrive it and I used it with a fan on if I was doing anything intensive. It ran clean and I would get good audio reports with it in circuit. I did not use the preamp so cannot comment on that. It does need a good power supply with a bit of headroom. I used a 40 amp at 13.8v supply and that was just enough.
G4CQM Rating: 4/5 Sep 23, 2016 13:55 Send this review to a friend
An affordable and useful 2M linear amplifier  Time owned: more than 12 months
I purchased my Microset SR200 secondhand a couple of years ago. Things you need to know: Do not overdrive, no more than 30-40W, otherwise damage can occur! A clip on fan keeps the amplifier very cool indeed! The 12 volt power leads can pick up external noise which is noticeable on a sensitive receiver. Clip on ferrite or slip over screening stops this! Otherwise an affordable and useful 2M linear amplifier.
GM4FVM Rating: 5/5 Jun 7, 2016 02:50 Send this review to a friend
Great piece of kit  Time owned: more than 12 months
I have had the Microset for a couple of years. I bought it from an Italian eBay site as it was a lot cheaper than UK sellers. Service from the site was excellent. The amplifier runs 200W for me with 50W drive, as claimed.
I do use the internal preamp when I turn off the one in the rig (usually IC-7100). Both together would be very noisy but can work on meteor scatter.
Use it for both SSB and data. On data I have had long QSOs running 100% duty cycle data - 30 seconds on, 30 second off, for an hour or more. I have a 120mm fan on all the time. The fan runs on 6 volts to cut down the noise. Sometimes use two fans (they are in series on the shack 12V supply). Like that it never gets more than warm. It shares a MyDel 50 amp power supply with my other linears.
Still using the PL259s. I have it wired for PTT which is much better than rf switching, even for data.
Really happy with this and it works 100% as it said it would.
M0ATV Rating: 4/5 Dec 5, 2010 12:55 Send this review to a friend
Good workhorse but runs HOT  Time owned: more than 12 months
This is the 2nd SR-200 I've owned, a real workhorse, but as some of the other reviewers have stated, the pre-amp function is only good if your rx is a tad deaf, they do run very hot if used in FM mode, but I tend to have a standard 120mm PC 12v fan on top of the heatsink with the fan in BLOW mode rather than SUCK, mine has N type sockets as a retro fit, also got to add mine doesn't seem to like RF sensing very much, so ended up having to run a PTT cable from radio, works like a treat now, 150 watts out draws around 21 amps at 13.8v DV, good value for money.
G6NHU Rating: 4/5 Oct 24, 2010 01:34 Send this review to a friend
Does what it promises but be aware of a couple of issues.  Time owned: 6 to 12 months
This amplifier works perfectly, I bought it a while ago and did some tests to make sure it was clean when running the full output power of 200w and it was really good.

The first time I used it for a six hour contest it got very hot though so I've bought a silent PC fan (Noctua NF-S12B ULN) which I just have rested on the top of the amplifier sucking air through the vanes. After a twenty four hour contest with very high duty cycle, the amp was only just warm.

My only issue is that the preamp is useless. Most people who want to run this sort of power will already have a decent masthead preamp and won't need the internal one. I wish manufacturers would produce amplifiers without preamps and would also realise that SO-239 connectors are terrible. I've replaced the SO-239s with N-types.

So apart from the fact that it runs hot, has a useless preamp and dodgy connectors, it's a good solid amplifier and I'd recommend it providing you're happy with these points but two of the three (heat and connectors) are easy to get around anyway.

M0PRO Rating: 5/5 Aug 30, 2005 14:01 Send this review to a friend
Great little amp!  Time owned: more than 12 months
I had to write a review for this little amp, because it was so good.

My SR200 was great, I owned it for around 12 months, and gave it some pretty heavy use. 35w in, gave 200w, and I never had a single problem with it, in fact I which I didn't sell it now!

Gets very hot if not used with some kind of external fan, but what do you expect at this price?

Well done Microset.

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