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Reviews Categories | Ham radio kits | W7RY Amplifier QSK control board Help


Reviews Summary for W7RY Amplifier QSK control board
W7RY Amplifier QSK control board Reviews: 5 Average rating: 5.0/5 MSRP: $18
Description: This is a PCB that contains circuitry for The board has adjustable bias so you can set the ZSAC (idling current) to your desired level.
The board also provides "soft key" as part of it's design. Your transceiver will only see 10 volts DC @ 1ma to key the amplifier. You can also key the amplifier with + voltage. (5-20 VDC @ < 10 uA) in the case of the Heathkit SB220 amp.
Product is in production.
More info: http://www.ebay.com/sch/sis.html?_nkw=W7RY%20Heathkit%20SB%20220%20QSK%20Board%20Linear%20Amplifier%20QSK%20System&_itemId=281051269896
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KC7JK Rating: 5/5 Nov 2, 2016 12:22 Send this review to a friend
super smooth quiet  Time owned: 0 to 3 months
I had K7htk Gary install the qsk and input board that W7ry Jim has into an L4b Drake and it is totally made the amp a way better operating amp.
quiet smooth like nothing i have ever ran before,,
yes i would recommend this great upgrade.now i know why i would only run the amp before for max 20 minutes.....i got tired of hearing the clanging relay before the w7ry upgrade.....hi..Kc7jk Bill
 
WD4ED Rating: 5/5 Jul 11, 2016 21:00 Send this review to a friend
Great Product  Time owned: more than 12 months
I have three of these boards in use. An SB-1000 converted to 6m, a homebrew 160m Single 3-500z amp and a Henry 2kd5. Yup even got it to work with a Henry. Boards work great, all three worked perfectly first try and I've never had a failure. All three have been in use for over a year.
 
K5ZG Rating: 5/5 Feb 16, 2016 09:01 Send this review to a friend
wonderful  Time owned: more than 12 months
put one in the TL922 Smooothe and fast. equals any tentec qsk without the hassle of in and out lines. All I hear is ting ting from the relays not KABANG. Soft key is great. Forgot the high voltage on key line when I first got the amp and had to fix the rf relay in the Pro 3. DUH I use it with Pro3, IC751A, IC745 and K3. just cant say enuff abt it.
Brad KV5V modifying an AL1200 for me to get rid of the pin diodes.

KV5V did these mods for me and I really appreciate his expertise
 
CE3DNP Rating: 5/5 Dec 10, 2015 17:55 Send this review to a friend
Running ok  Time owned: 0 to 3 months
My TL-922 seems more powerful with this modification and looks like very light when taking one kilowatt or more. Totally silent with a pair of vacuum relays and really QSK, no more annoying and noisy clicks.
Already it has two top contest and zero failure.
 
N4ZAW Rating: 5/5 Apr 12, 2015 22:19 Send this review to a friend
Well-designed!  Time owned: 0 to 3 months
I just finished remodeling a Heathkit SB220 amplifier. During my research phase, I ran-across this board designed by Jim, W7RY. He offers the blank board only, and has versions for the SB200, Kenwood TL922 and others. He also provides the link to a ready-made parts list at Mouser to populate it with, like 13 bucks worth of components to make it go.... It was a fun build, and is made of high quality material. The layout is straightforward. When built and installed, this little thing supplies power for the addition of your vacuum relays for TIMED full-qsk relay operation. Another neat feature of the board is it takes the place of the original under-rectified bias circuit (and bias tx/rx switching too), while making the bias level fully-adjustable. WAY cool! It adds "soft-key" for use with modern rigs. Mine works flawlessly, granted, I just installed it last week. But I'm thoroughly impressed! It made a classic amp even better.
 


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