Yes I would say you have to build it. The only reason make such a requirement is if the amplifier is not using a split power supply. But instead is a single supply with the output at 50% of the supply voltage. It could be very reasonable if what I suggest is true to open the amp and install the caps within it. Just a thought. Regards Paul wb8tsl
On Mon, Jun 4, 2018 at 10:06 AM, Julien Goodwin <time-n...@studio442.com.au> wrote: > Making my own that fits in either the mini Pomona boxes (which has > BNCs)[1] or the nice really tiny Crystek SMA housings[2] with a BNC to > SMA looks like it's probably the sensible option. > > 1: https://www.pomonaelectronics.com/products/boxes/boxes-with-connectors > > 2: http://www.crystek.com/microwave/spec-sheets/ > enclosure/SMA-KIT-1.3MF.pdf > > On 04/06/18 22:52, Bob kb8tq wrote: > > Hi > > > > DC blocked 50 ohm terminations are indeed a bit odd. One answer is to > simply use the > > 75 ohm version and move on. The gotcha there is that they may / may not > have a block > > that works well at 10 MHz ( = the cap is to small ). The one thing *not* > to do is to run the > > device with no termination on the cable. The gizmo will be perfectly > happy. Your lab will > > be a mess. The coax will normally be long enough to make a great antenna > at 10 MHz. > > Leaving the end un-terminated puts it in “antenna mode”. You will have > RF all over everything. > > I have a lot of experience with this specific problem ….. > > > > Bob > > > >> On Jun 4, 2018, at 12:09 AM, Julien Goodwin <time-n...@studio442.com.au> > wrote: > >> > >> I'm looking at using a Spectracom 8140 for 10Mhz distribution, and they > >> specify using a DC-blocking 50-ohm terminator on each run. > >> > >> These seem to be odd enough that none of my usual sources have them > >> (75-ohm DC-blocking terminators yes, 50-ohm, no). > >> > >> While it's easy enough to chain a DC block and a terminator, I'd prefer > >> a single module I can more obviously label as the line termination. > >> _______________________________________________ > >> time-nuts mailing list -- time-nuts@febo.com > >> To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > >> and follow the instructions there. > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.