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Reviews Categories | Amplifiers: RF Power - HF & HF+6M | Collins 30S-1 Help

Reviews Summary for Collins 30S-1
Collins 30S-1 Reviews: 15 Average rating: 5.0/5 MSRP: $1,556.00
Description: HF Linear Amplifier
Product is not in production.
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N6YE Rating: 5/5 Apr 2, 2006 13:10 Send this review to a friend
Built like a battleship!!!  Time owned: more than 12 months
I had the pleasure of using the Collins S Line while I was stationed at the US Army Maintenance Command, Naha Okinawa, September 1964 to February 1966. The amateur radio station in our company was KR6CF, which I operated many hours running phone patches back to the states for military personnel. Also ran patches for the Navy guys on the USS Coral Sea. Collins equipment was always reliable! If you can find a 30S1 grab it! It will never let you down. Ken N6YE
AD5QP Rating: 5/5 Feb 3, 2006 11:31 Send this review to a friend
Super, Reliable Amp  Time owned: more than 12 months
I have had the 30S-1 for a number of years now. Absolutely no problems. Have just added a 330uf filter in parellel with C204, the screen supply filter, and it increases the sideband punch. I clean it and oil the fan motor every 6 months or so, and it just keeps on working. The smell when it's operating is so reminiscent of the old equipment. I think it's the coatings on the transformer..... I am driving it now with a TS-850S, and it loves it. I traded a Henry amp for this and I think I got the better deal.
K8HU Rating: 5/5 Jul 2, 2004 16:54 Send this review to a friend
Great Amplifier, from a kinder time  Time owned: more than 12 months
Have had my Round Emblem 30S-1 for 14 years with only 1 problem, the diode for the grid current metering opened. Easy fix, hard to find the diode. It is mounted on an unused set of lugs on the POWER switch.

There is little better than running my "S" Line with this amplifier on a cold winter night on 40 or 75M. The room is filled with the smell of warm tubes.

At any rate. Have kept with the 4CX1000 PA v/s going to the 4CX1500. Reason? The cooling system on the Collins was engineered to be dead quiet and to do that, pushes just enough air through the fins of the PA to remove the heat generated when the amplifier is loaded to 1KW INPUT. The 4CX1500 has a greater fin density which results in not as much air flow.

Also, one has to remember this fine piece of equipment uses a TETRODE for a PA. The loading/tune up procedure is basically the same but the operator must monitor Screen and Grid Current. Screen current is always a negative deflection. If it goes positive, the amp is flat-topping. The grid current rating of the 4CX1000 is essentially zero. To keep from buying an expensive ceramic tetrode, the amplifier can never be allowed to draw grid current.
WA6BOB Rating: 5/5 Dec 21, 2002 07:00 Send this review to a friend
The Best  Time owned: more than 12 months
I have owned this Collins 30S-1 for over 30 years as well as maintained it in perfect condition. The 4CX-1000 has been replaced with a 4CX-1500A for easier handling in the RTTY mode.

It is great for its continious duty when needed as well as its overkill in interlock safety, design, and true linerity.

I also subscribe to the Collins email for any updates or notes of recommendation. If you have the opportunity to obtain one, do so and refurbish it to the max. It will make the central point of conversation many times around.
KC4CLD Rating: 5/5 Jul 9, 2001 00:54 Send this review to a friend
The best ever built!!!  Time owned: 0 to 3 months
Collins 30S-1 HF Amplifier. 80-10 meters. 1000 Watts PEP.
Total coverage band:
80 meters position: 3.5-5.0
40 meters position: 6.5-9.5
20 meters position: 9.5-16.0
15 meters position: 16.0-22.0
10 meters position: 22.0-30.0
RF INverse feedback for better linearity and Automatic load control assuring a clean signal.

My Review:

A month ago I was lucky enough to find a used Collins 30S-1 in mint condition al all rebuilt by his former owner who is very sick and was selling all his ham equipment.

The Collins Radio equipment, including the 30S-1 is better built both mechanically and electrically than most HN amplifiers on the market today, performs well at its power level and doesn't require much maintenance not ever troubleshooting. Not to mention that you signal will the best and clearest one on the air compared with ANY other HF amplifier today.

This babe push out 1000 watts very easy and uses the Eimac 43X1000A as the only tube.

The components in the 30S-1 have NOT way to compare with the today's amplifiers and this explain why the US Military depended long time for Collins Radio in the World War II and later in the Cold War.

If you are able to find a Collins 30S-1 in good working condition, go for it. You will own not only the best amplifier ever built but also a very nice piece of the American Radio History that will make yourself proud.

Go for it!!!! If you can find one.
Nobody and nothing...can't beat a Collins Radio!!!
No way Jose!!!
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