Hydroponics Online Store



Hydroponic Systems

Hydroponic Grow Lights & Bulbs

Hydroponic Tents & Grow Boxes

Hydroponic Ballasts

Grow Light Reflectors

Hydroponic Nutrients

Grow Media Rocks

Hydroponic Pumps

Hydroponic Pots

Hydroponic Books

Meters

Hydroponic Exhaust Fans

Hydroponic Seeds

Hydroponic Foggers

Home Store Blog Forums FAQs Lesson Plans Pictures


Search:



Heathkit SB-201 Ham Radio Linear Amplifier Transmitter or Transceiver Excellent For Sale


Heathkit SB-201 Ham Radio Linear Amplifier  Transmitter or Transceiver Excellent



This item has been shown 0 times.

Buy Now

Heathkit SB-201 Ham Radio Linear Amplifier Transmitter or Transceiver Excellent:
$430

Used Heathkit SB-201 Amplifier is just what you need to be heard through those pile-ups.  The first 500watts is the most important ... that's why these Heathkit Amps are so popular even today.  This one was well cared for and still does a nice job.  The modern radios require a little interface box to protect the internal switching ICs from too much current in the switching relay but those can be had for about $25 to $50 bucks depending on where you get them. I have no manual for this amp but they are often available on .   The 572B tubes look new and the DC voltage on the HV meter position reads about 2400 volts which is normal for these amps.   This amp will be well packed for survival and shipped to your QTH.  UPS Shipping is FREE in CONUS.  Other methods at your expense.  This Amp covers 80 40 20 and 15 meters. Thanks for looking.  

On Oct-24-11 at 08:41:01 PDT, seller added the following information:

I put the SB-201 on the bench this morning and checked its performance... this is what I measured thru my watt-meter into a Dummy Load: 80 meter band ...3.840 Mhz with 70 watts in ... key down ... 500 Watts out measuring with my MFJ-986 tuner's built in watt-meter. (not a lab instrument) 40 meter band ...7.172 Mhz with 70 watts in ... key down ... 500 Watts out     "             "     "      "             "        "   "    "        "   20 meter band .14.226 Mhz with 70 watts in ... key down ... 420 Watts out      "            "     "      "             "        "   "    "        "  15 meter band .21.310 Mhz with 70 watts in ... key down ... 300.Watts out      "            "     "      "             "        "   "    "        " On 40 Meters ... I talked to a couple of stations on LSB and got reports of 5 9 with good quality audio from both when I requested a critical report as I was testing a  Amp.   

On Oct-24-11 at 10:13:48 PDT, seller added the following information:

Remember... that under CW key down conditions the power supply DC output voltage drops quite a lot... when using SSB voice peaks of current do not pull the voltage down near so much so the power input and power output peaks will be quite a bit more... usually you can figure 150 to 200 watts more on SSB peaks than you will get with key down...   confusing enough for most... ha ha... so my guess is that this amp may put out about 600 to  650 on peaks in SSB mode with most voice types on 80 and 40 meters and maybe 450 peak on the higher bands... thats my guess..   Thanks for your interest.  

On Oct-25-11 at 11:24:19 PDT, seller added the following information:

Oct 25, 2011 ... Last night I checked into a 40 meter net with this amp in-line instead of my usual amp which is a SB-221 Heathkit.  I made several contacts and the reports and comments were all good and about the same as if I was using my SB-221.   Probably because I run about the same power even when I could be running more.  Everything worked smooth and as it should.  A great little amp.  Good luck in the offers.  


Buy Now


 

Hydroponic Forum Discussions:

Solenoid valves for stock solution control
Root problems and slime balls
Brown tips?
Seeking Advice on Vertical Farming
Basic Ebb & Flow, looking for advice on vertical farming.
Need fertilizer high in potassium!
Drilling holes for net pots, the correct way
FOR SALE: BC Northern Lights "Bloombox" w/ all the bells and whistles!
PPM problem
Zucchini leaves "bleaching"?
Advice on DWC
watering time

Popular Hydroponic Items:


Rf Gain 88-108 Mhz 30db Gain Pallet Amplifier Module For Fm Stereo Transmitter picture
Rf Gain 88-108 Mhz 30db Gain Pallet Amplifier Module For Fm Stereo Transmitter


Smart Kit Electronics Diy 1w Fm Transmitter 1009 Af Preamplifier Rf Ham Radio    picture
Smart Kit Electronics Diy 1w Fm Transmitter 1009 Af Preamplifier Rf Ham Radio


Mirage B1016 2 Meter Amplifier Ham Radio picture
Mirage B1016 2 Meter Amplifier Ham Radio


Fatboy Straight 6 Pill Toshiba 10 Meter Amplifier Cw Davemade Xforce Base Linear picture
Fatboy Straight 6 Pill Toshiba 10 Meter Amplifier Cw Davemade Xforce Base Linear


Vintage Hallicrafters S20r Sky Champion Ham Radio  picture
Vintage Hallicrafters S20r Sky Champion Ham Radio


Cb/ Speaker For Cobra  2000 picture
Cb/ Speaker For Cobra 2000


Palomar 250 Linear 80-15 Meter Pulled Working From An 18 Wheeler picture
Palomar 250 Linear 80-15 Meter Pulled Working From An 18 Wheeler


10w Power Amplifier Qbs-327, 800-1000 Mhz picture
10w Power Amplifier Qbs-327, 800-1000 Mhz


Heathkit Sb-221 picture
Heathkit Sb-221


Fatboy Linear Amplifier Am/ssb picture
Fatboy Linear Amplifier Am/ssb