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HF Amplifiers

Displaying ads 1 to 10 of 202 ads in this category.
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 FS: 30L-1 power supply and relay board   
FS: 30L-1 power supply and relay board
I am a professional power supply engineer. I have been making this power supply board since 2004. This board was reviewed on Dec.2009 QST. This is a completely assembled and tested board not a kit with lesser quality parts like others. The board is made with one FR-4 board and contains 105 deg C caps ( 220 uf, 6 of them) and the Current shunt and HV multiplier resistors ( 4 meg ohm) all included.
The heat sensitive caps are mounted under the PCB while the heat generating resistors are mounted on top of the board which makes the board very reliable. The board is $69 + $10 for S/H. I also have a brand new 500V MOSFET linear amp interface board which will reduce the Current and V from 70mA, -170V to 1mA,-14V on the 30L-1. price is $27 plus $3 for shipping. If you want bias parts protection if 811A grid to plate gets shorted, I will provide largest size 200V 20 mm dia. MOV and Bias cap and diode for free with this order.
Listing #1144574 - Submitted on 07/25/14 by Callsign K6HM - IP: 75-37-192-218.lightspeed.lsatca.sbcglobal.net
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 HUNTER BANDIT 2000B  
2 K.W. P.E.P. Desktop Linear. 4-572b tubes in it. Looks good and works well.Currently in service, (mainly used on 20).Has a manual. $500 Must be picked up here in North central Mass.
This Amp. has a very heavy power transformer in it! PAYPAL IS FINE
Listing #1144476 - Submitted on 07/25/14 by Callsign WA1ACR, Modified on 07/25/14 - IP: c-50-169-118-93.hsd1.ma.comcast.net
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 Ameritron AL 1200 HF Amp
I am selling an Ameritron AL 1200 HF amplifier. Perfect condition with Eimac 3CX 1200 A7 and the EBS -1 Electronic Bias circuit installed. Easily 1800 watts with 90 watts drive.
Note this is a very heavy amplifier and I am recommending a pick up or I can meet you half way within 200 miles of Spartanburg, SC
Cash or PayPal only acceptable means of payment.
Asking 1750 dollars US. The serial of this amplifier is 12662. Low tube hours!
Listing #1144510 - Submitted on 07/25/14 by Callsign W1IT - IP: h230.41.40.69.dynamic.ip.windstream.net
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 Yaesu FL-2100B
Totally re-conditioned
Brand new band switch
Works 100% on all bands
Looks very good
Wired 110 and W/manual
$430 Pick-Up in New Orleans
or Biloxi areas
No Paypal
Listing #1144503 - Submitted on 07/25/14 by Callsign N5NGC - IP: 99-42-147-60.lightspeed.nworla.sbcglobal.net
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 For Sale: 390uf/450 Volts Capacitors  
New electrolytic capacitors…390uf/450 working volts, 105 degrees.
Ideal for replacement filter capacitors used in older amplifiers...Collins, Heathkit, Dentron, Amp Supply, Ameritron, etc. or any other high voltage power supply.
Snap in type, 30mm X 45mm...105 Degrees, pins 10mm centers.
Price: $2.75 each plus shipping of $6.50 in lots of up to Ten(10)
6 in series will give you 65uf at 2700 working volts.(Total $23.00 shipped US)
8 will give you 48uf at 3600 working volts.(Total $28.50 )
10 will give you 39uf at 4500 working volts.(Total ($34.00)
Special price on 20 or more...$2.50 each plus shipping of $12.50 on 12 or more.
These capacitors are new and made USA...
I have some 120k, 3 watt equalizing/bleeder resistors for $1.00 each.
I also have 30, 390uf/500 volt, TCI,105 deg for $4.25 each.
I accept PayPal , USPS Money Orders, or personal checks (after clearing). All shipping Priority Mail.
Listing #1143909 - Submitted on 07/22/14 by Callsign K4POZ, Modified on 07/25/14, Web Site: http://k4poz.net - IP: adsl-074-237-017-091.sip.asm.bellsouth.net
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 Wanted GS35-B or any HB AMP Project
WANTED: unfinished GS-35B or any amplifier project
Listing #1144328 - Submitted on 07/24/14 by Callsign WB8WJU, Modified on 07/25/14, Web Site: http://home.comcast.net/~wb8wju/ - IP: c-98-236-233-251.hsd1.oh.comcast.net
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 Heathkit SB-1000 Heathkit SB1000  
HEATHKIT SB-1000 it uses a single 3-500Z the amp works as it should on all bands 10 - 160 meters. the band switch turns to the right one click below 15 meters for ten meters. 10 meters is not marked on the front of the amp but it is there. it has some up grade mods done to it. it has a soft start installed and the transformer has been up graded with a new transformer for an Ameritron AL-80B it also has a new capacitor bank as well. it has bright white led lights installed in the meters. the only thing that is wrong with this amp is the transmit light doesn't work it has a burnt out LED would be my guess so it will to be replaced. it has normal wear small scratches and nicks and chips nothing bad at all there is a scratch on the front where it says transmit look at the pictures I think you can see it. the amp is wired for 240 volt the amp is built like a tank and its a real workhorse. $900.00 shipped to lower 48 states. U.S. Postal Money Order or PayPal + 3% fee they charge
Listing #1143267 - Submitted on 07/19/14 by Callsign W4JTG, Modified on 07/25/14 - IP: h209.184.29.71.dynamic.ip.windstream.net
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 Alpha 76 Two hole  
I have an Alpha 76 with two 8874 tubes, works great, always has. The standby SSB button pops out, It works as it should, but does not stay in place if you press CW button. Can be glued or replaced, I just never did as it does not affect operation.
Paypal +3%
Original manual included
$1000.00 shipped, FIRM
Listing #1141602 - Submitted on 07/10/14 by Callsign N7CAL, Modified on 07/24/14, Web Site: http://WWW.N7CAL.COM - IP: host671420021174.direcway.com
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 F/S ALPHA 9500  
For Sale Alpha 9500 Amplifier. Used about 2 hours. Warranty good until August 2015. Will deliver up to 300 miles from St. Louis. $6000.00 or best offer. Dan 573 438 5870 if no answer leave message and I will call you back. I am placing this ad for a Friend who is getting out of the hobby. All contacts should be made directly to him for any Questions or offers.
Thanks
John n0snx
Listing #1142597 - Submitted on 07/15/14 by Callsign N0SNX, Modified on 07/24/14 - IP: 172.242.221.156
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 UNBUILT Heathkit SB-221 Amplifier   
This is an undisturbed SB-221 kit. No inventory has been taken as it appears nothing has been taken out of the box. Includes the original power xfrmr in original box to be shipped separately as it weighs 25#. Will sell for $1700 PLUS shipping to USA. Tire kickers welcome. NO OVERSEAS SALES unless you have a USA address to ship to.
Listing #1144390 - Submitted on 07/24/14 by Callsign K8ZBY - IP: cpe-76-181-195-121.columbus.res.rr.com
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