eHam.net - Amateur Radio (Ham Radio) Community

Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net


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


Reviews Summary for Collins 30S-1
Collins 30S-1 Reviews: 13 Average rating: 5.0/5 MSRP: $1,556.00
Description: HF Linear Amplifier
Product is not in production.
More info: http://
Email Subscription
You are not subscribed to this review.

Subscribe!
My Subscriptions
Subscriptions Help

You can write your own review of the Collins 30S-1.

<— Page 2 of 2

WA4HHG 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
SOME SPECS:
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!!!
 
<— Page 2 of 2


If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager.