From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Wilson G. Hein" Subject: Re: Coupling a scope to transmitter output Date: Sat, 04 Nov 2006 17:06:00 -0500 Message-ID: <1162677960.31762.94.camel@CO> References: <20061104201458.8A520D15@teufel.hartford-hwp.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-reply-to: <20061104201458.8A520D15@teufel.hartford-hwp.com> Sender: linux-hams-owner@vger.kernel.org List-Id: Content-Type: text/plain; charset="us-ascii" To: Linux Hams Mailing list How about a simple pickup loop? Tak a piece of coax, on onme end put your connector to go to the spec an, and on the other strip the coax back enough to have enough of the insulated inner conductor to make 3 or more loops, strip about 1/4 inch of insulation off of the end of the center conductor and solder it back onto the shield where it goes back into the outer insulator. Put the loop around the coax between the transmitter and antenna. Should be satisfactory coupling to read the tx'd signal. Willie, WJ3G On Sat, 2006-11-04 at 15:14 -0500, Haines Brown wrote: > I have the feeling this question will be a bit OT, and so let me first > ask to what forum it should have been directed. > > I have a Tektronix 2235 I'd like to use to monitor the PSK31 signal > from a FT-817. I googled a bit and looked in the Handbook, but no > clue. > > The simplest coupling would be a coax T connector between the FT-817 > and the antenna coax, and a length of coax to the scope's External > Input BNC connector. > > This connector is 1 meg-Ohm, 20 mFd, 400 V peak max, about 100 mV/div. > > But I have no reason to think this simple coupling would work. Any > advice? > > Haines Brown KB1GRM > - > To unsubscribe from this list: send the line "unsubscribe linux-hams" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Wilson G. Hein