I am planning on building a switching box, so that my hf transceiver can drive one of three linear amplifiers. I have some Omron 24V contactors MP2-24VDC. These are rated at 25A resistive 277 VAC. Th
The best deal a casual Google search turned up was RG393 at $13.20/foot from Tessco: http://www.tessco.com/products/displayProductInfo.do?sku=57757&eventPage=1 I saw 139 feet on eBay, but it was outr
Sorry, I finally noticed that your box wants to be on the 100-watt end of things. Make that RG303 instead. There are scrap lengths on eBay here and there, do a search for RG303 . Also - there may be
Mark: Tessco ( www.tessco.com ) sells RG-400/U in one foot increments. If your _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailma
Amps in series.... not so good. I would guess that most QSK amps have a form of RF 'sniffer' on the input to prevent hot switching. Following a massive brain cramp, I cabled a KWS-1 (600W) through a
N2BC: Not sure I understand why QSK would be an issue -- if your amp is in Standby, you should be able to run exciter through it, correct? You do have a point -- one needs to make sure IF series amps
I know of at least 2 on here that use a pair of 3-500's as a driver(-; Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mail
Best price I found for RG-400 was places selling on e-bay although still not cheap. Seems to be good stuff. 73 Roger (K8RI) _______________________________________________ Amps mailing list Amps@cont
I have run an AL-1500 and SB-220 in series. Absolutely do not do this if the second amp in line is equipped with QSK circuitry, because RFI from the high level of other-band power may switch its rela
As I said my experience is with the TT Titan. Standby simply cuts off the PA and inhibits transmit. If you look at the diagram, you will see a capacitive coupled circuit on the RF input BEFORE any TR
N2BC: I understand now. I use an SB220, no QSK, so that didn't enter the thought process. So, IF one were to series QSK capable amps, it would require rework of the amps and some interconnection with
W8ZR created an rig/amplifier switch box and there was a write up on it in QST. http://www.harbachelectronics.com/main/page_products_w8zr_station_pro_w8zr_stationpro.html Take a look as his design in
I am confused by this thread's apparent intent... I first thought that it was about having two or three amps powered up and then making your choice as to which you wanted to use by switching the PA r
I run my TL922 through my Alpha 9500, but of course, the Alpha is in standby and is capable of running 1500w through it. The switch box will be handy, for example, the 3cx1500 takes 3mins to warm up,
I bought this from Radiodan on eBay for about $65. It's actually a buffer box made especially for the older amps with modern rigs. You run a standard RCA phono cable from the box to your amps (the li
Ummm., I believe the original poster was talking about using power splitters at the input and combiners at the output of two medium-power amps to achieve QRO with less expensive amps. We had a 30kw H
NEVER run amplifier in series! Most amplifiers use RG58 or smaller coax for the input connector to the relay. And as mentioned before, some, like all of mine, use a small 100 watt relay for the input
Yes Krish has got the idea. I worked a station the other day who had built a similar box and he was able to transmit through one amp and then drop transmission for half a second and come back on the