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Mohican question, capacitors.
01-22-2016, 06:13 PM
Post: #30
RE: Oscilliscope question
Hi Ray,

No Sydney's for awhile, maybe feb or later. Up for a meet? Will let you know and send me the dates you expect to be in Sydney. Also, the GC-1000 is a neat system. I have two, one for spares and the other running. Someone out there makes EPROM replacement chips for the synching receiving and our Jim Johnson is the moderator for a the GC-1000 Yahoo forum.

Jebem:

I use a 1957 HeathKit RF Signal generator similar to this one:

http://biggerbids.com/auction-image-gall..._id=724565

The Mohican:

Today, polish case, new speaker wire with two pin plug halfway, just in case I have to get back into the radio, saves soldering. I will temporarily install the 8 ohm speaker for testing purposes.

Spent quite awhile reading up on speaker impedance, watt ratings, the theory and etc. Sure didn't teach me this in Botany/forestry or palynology at university!

The Mohican, GC-1000, the signal generator on a shelf together along with the HP 59309a (http://www.hpmuseum.net/display_item.php?hw=741) and my HP 1202a oscilloscope make for interesting shelf mates.

?????

Now for another Mohican question. The speaker wire is a two part shielded wire. The outer braided shielding is for side of the speaker conducting wire, the inside is the second. It does not appear to me that the shielding is functional. Secondly, none of my other shortwave or tube radios (zenith transoceanic 7000-3000, Grundig 4035 and others) have shielded speaker wire. The wire was in bad condition (really sloppy solder joband to be expected on the braided side) and needs to be replaced. After reading about shielded speaker wire for sound systems (different application) is the shielded cable required or can standard speaker wire work? Even the GC-1000 does not have shielded speaker wire and no transient hum from the ac circuitry is picked up.

Geoff
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Messages In This Thread
RE: Oscilliscope question - Garth Wilson - 01-21-2016, 05:49 AM
RE: Oscilliscope question - walter b - 01-21-2016, 09:55 AM
RE: Oscilliscope question - jebem - 01-21-2016, 05:16 PM
RE: Oscilliscope question - rprosperi - 01-21-2016, 11:51 PM
RE: Oscilliscope question - Steve Simpkin - 01-22-2016, 04:15 AM
RE: Oscilliscope question - jebem - 01-21-2016, 06:27 PM
RE: Oscilliscope question - Garth Wilson - 01-22-2016, 02:10 AM
RE: Oscilliscope question - vk6ti - 01-22-2016, 09:30 AM
RE: Oscilliscope question - jebem - 01-22-2016, 10:29 AM
RE: Oscilliscope question - Geoff Quickfall - 01-22-2016 06:13 PM
RE: Oscilliscope question - jebem - 01-22-2016, 08:46 PM
RE: Mohican question, capacitors. - vk6ti - 01-23-2016, 12:14 AM
RE: Mohican question, capacitors. - jebem - 01-23-2016, 07:55 AM
RE: Mohican question, capacitors. - jebem - 01-23-2016, 07:53 PM



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