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

donate to eham
   Home   Help Search  
Pages: Prev 1 [2]   Go Down
  Print  
Author Topic: Acom 1010 Vs Acom 1011  (Read 15158 times)
CR7AGJ
Member

Posts: 6




Ignore
« Reply #15 on: November 10, 2012, 12:47:21 PM »

but forgeting the valves which amplifier is better and can get more power?

Maybe the Acom 1010 has that GU?? that vales are stronger than the Acom 1011 no?
Logged
KH6DC
Member

Posts: 770




Ignore
« Reply #16 on: December 21, 2012, 04:01:35 PM »

I would go with the 1010 since it's been out there tried and true.  It turned out to be very reliable.  The 1011 is still new though ACOM has an excellent reputation of building excellent amplifiers, there may be some bugs which still exist.
Logged

73 and Aloha,
de Delwyn, KH6DC
W1BG
Member

Posts: 33




Ignore
« Reply #17 on: March 07, 2015, 07:57:42 PM »

According to Array Solutions most recent price list, the ACOM 1011 appears to have been discontinued and now shows as "Obsolete"

Logged

The Pay-TV Industry may not hold the patent on poor customer service, but Comcast in particular has made an art form of it.
KK5DR
Member

Posts: 617


WWW

Ignore
« Reply #18 on: March 08, 2015, 08:44:29 AM »

Here is an example of how many 4CX250B tubes are out there. I've seen them at nearly ever hamfest I've been to. Once I found a guy selling used ones, he had a bucket full of them. I bought them for a buck each. 90% of them tested good! At one time I had 25 of them in my stock pile, I had about $30 in all.
These little guys will put out 500 watts all day in a pair, and on ssb they will pep 750 with little trouble.
The only ham amp other than the Acom I know of that used them is the THP 1KA. Lots of commercial/mil amps use them.
If I were in the market for an HF amp today, the Acom 1011 would be in my top 3 for consideration. Never have to worry about not having replacement tubes with it.
Logged
G3RZP
Member

Posts: 7385




Ignore
« Reply #19 on: March 08, 2015, 02:28:17 PM »

RCA rated the 7203/4CX250B for 295 watts PEP out at 30 MHz with -30dB 3rd order IMD. Without feedback, it isn't a very linear device. So 700 watts might be a bit much for cleanliness.
Logged
KM1H
Member

Posts: 1277




Ignore
« Reply #20 on: March 08, 2015, 03:21:12 PM »

It should be noted that Eimac didnt rate the 7203 for IMD and I suspect the RCA results, which do not agree with any 4CX250B I and others have tested, were created by using the ARRL method of cherry picking the two tones for best performance.
BTW that tube is an Eimac development, not RCA.

In fact the later Eimac 4CX250R/7280 which was specifically developed for ship and aircraft SSB use can only reach -23dB 3rd which is more in line with reality and appears to be a worst case spec.
http://frank.pocnet.net/sheets/140/7/7580W.pdf

Carl
Logged
W8JX
Member

Posts: 9714




Ignore
« Reply #21 on: March 09, 2015, 06:49:27 AM »

According to Array Solutions most recent price list, the ACOM 1011 appears to have been discontinued and now shows as "Obsolete"

Acom still lists it on their site.

Click Here
Logged

--------------------------------------
Ham since 1969....  Old School 20 WPM Extra
W1BG
Member

Posts: 33




Ignore
« Reply #22 on: March 17, 2015, 04:12:44 AM »

According to Array Solutions most recent price list, the ACOM 1011 appears to have been discontinued and now shows as "Obsolete"

Acom still lists it on their site.

Click Here

True enough, but Array Solutions' price list says it's obsolete


Click Here
« Last Edit: March 17, 2015, 04:17:24 AM by WB9FOP » Logged

The Pay-TV Industry may not hold the patent on poor customer service, but Comcast in particular has made an art form of it.
WX0B
Member

Posts: 52




Ignore
« Reply #23 on: March 17, 2015, 02:07:55 PM »

They do not manufacture it any more guys....1010 only.
I think ACOM is just not updating their site. 

Jay, WX0B
Logged
W1BG
Member

Posts: 33




Ignore
« Reply #24 on: April 01, 2015, 07:59:45 PM »

They do not manufacture it any more guys....1010 only.
I think ACOM is just not updating their site. 

Jay, WX0B

Thanks Jay.
I see on the Acom Yahoo Group in the file section there is a document that spells out the protection parameters and healthy tube regime parameters for the 1000 in rather exhaustive detail. I realize the 1010 lacks some of the sophistication of the 1K, but am wondering if a similar document could be made available for the 1010?

Thanks
Bill
Logged

The Pay-TV Industry may not hold the patent on poor customer service, but Comcast in particular has made an art form of it.
Pages: Prev 1 [2]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!