On Dec 16, 2024, at 11:07?AM, Lyndon VE7TFX <lyndon@...> wrote:

?Robert Logan via groups.io writes:

Put in byrdpete

And therein lies your problem :-) It's 'bydpete'.

--lyndon

On Dec 9, 2024, at 3:02?PM, Lyndon VE7TFX <lyndon@...> wrote:

?Sorry for coming in late here, but my solution to a lot of the
RCA cabling issues lies with the "Bydpete" store in eBay. They
sell every permutation of jumper cable you can imagine.

My Omni VI has about an acre of RCA connectors on the back panel.
To deal with that I just bought an acre of RCA-to-RCA coax jumpers
from that eBay seller. For the audio and control lines, the RG-316
jumpers are fine. Those cables are very flexible, and provide much
better shielding than audio cables or twisted pair. I also have
an assortment of RG-174 BNC jumpers, and a large handful of RCA-M
to BNC-F adapters. I use those when there is more power involved,
or when I'm being obsessive-compulsive about loss or shielding.

--lyndon

Sorry for coming in late here, but my solution to a lot of the
RCA cabling issues lies with the "Bydpete" store in eBay. They
sell every permutation of jumper cable you can imagine.
--lyndon

I know very little about chemistry but I've read that the black stuff
on silver is oxidation and conducts as well as the silver. Maybe I've
read incorrect information.
Barry - N4BUQ

I would guess more likely silver sulfide. Silver actually oxidizes
with some difficulty but sulfides fairly easily. Silver sulfide is not
very conductive. You are right about sulfide or oxide removers, they
tend to remove metallic silver as well. The problem is caused by
sulfides and peroxides in the atmosphere. It is a problem in preserving
photographs.
On 12/7/2024 10:07 AM, Jim Shorney via groups.io wrote:

The black stuff is likely silver oxide, which is conductive. It can usually be
left alone. OTOH the tarnish removers will strip come of the silver that you
want to keep.
On Sat, 7 Dec 2024 09:55:59 -0800
"VE7PS via groups.io" <ve7ps@...> wrote:

That oxidation can be polished off with a bit of Tarn-X or other silver
polish. Might be easier dipping it in a *liquid *type of silver polish
first.

--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998

Domenic:

Congrats on the two FS-4's.? They are not getting any easier to find, though an inexpensive alternative?nowadays?is the "FS-4b" that Gary, WB6OGD, and Bernie VE3FWF, have come up with, with contributions by others as well (sorry...?forgotten?who all was involved).? More available in the archives for this group.? Just search?FS-4b.

That oxidation can be polished off with a bit of Tarn-X or other silver polish.? Might be easier dipping it in a liquid type of silver?polish first.

Low capacitance cables were used by Drake for the Car Osc and INJ cables for the 4-line.? ? They were usually "marked" with a small metal tab.? I haven't tried?it but a short audio coax lead should probably work fine.? RG-6 can be used but is too stiff for my liking.? Belden 8421 cable works well.? Much about this in the archives as well.

I have never tried?hooking up multiple rigs to one FS-4 at the same time, but you could use a coax switch and switch between radios pretty easily.? A BNC switch might be the best choice, but you could probably use a cheap 1 x 4 RCA audio (or audio/video) switch and get away with it too.? Worth a try.

73

Peter

VE7PS

On Sat, Dec 7, 2024 at 9:04?AM Dominic Dambro via <dominic1967= [email protected]> wrote:

I went on a spree and bought two FS-4 units this week. Both work fine (thank goodness) but I'm curious about what looks like oxidation on this original injection cable. What would work to safely remove the buildup and clean the surface?

?

Also- why do I hear that regular RCA cables, intended for audio, are not as good as coax cables, intended for antenna connections? Is it the resistance?

?

Lastly- has anyone hooked up an FS-4 to multiple receivers at one time? I enjoy comparing reception between my R-4A, B and C receivers and would love to have one FS-4 permanently attached, maybe switching between units without having to reach back and connect/disconnect for each receiver. Any downsides to this?

?

Thanks,

Dominic

?

?

?

I have an FS-4 and E-Tek digital dials (FR-4 and FR-4tr) that I plan to set up with the C4 and my B/C lines and TR4CW RIT.? Just have not gotten to it yet since I moved back to Idaho.

?

?

I would guess more likely silver sulfide. Silver actually oxidizes
with some difficulty but sulfides fairly easily. Silver sulfide is not
very conductive. You are right about sulfide or oxide removers, they
tend to remove metallic silver as well. The problem is caused by
sulfides and peroxides in the atmosphere. It is a problem in preserving
photographs.

On 12/7/2024 10:07 AM, Jim Shorney via groups.io wrote:

The black stuff is likely silver oxide, which is conductive. It can usually be
left alone. OTOH the tarnish removers will strip come of the silver that you
want to keep.

On Sat, 7 Dec 2024 09:55:59 -0800
"VE7PS via groups.io" <ve7ps@...> wrote:

That oxidation can be polished off with a bit of Tarn-X or other silver
polish. Might be easier dipping it in a *liquid *type of silver polish
first.

--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998

The black stuff is likely silver oxide, which is conductive. It can usually be left alone. OTOH the tarnish removers will strip come of the silver that you want to keep.
On Sat, 7 Dec 2024 09:55:59 -0800
"VE7PS via groups.io" <ve7ps@...> wrote:

That oxidation can be polished off with a bit of Tarn-X or other silver
polish. Might be easier dipping it in a *liquid *type of silver polish
first.

That doesn't look like an original Drake cable. ?What is interesting is that the connector is corroded but the solder lug/wire are not. ?Almost suggests it was a cable from another application or was in storage for a very long time; the fact that the center pin appears to have corrosion around the entire circumference supports this.

Criticality of shielded cables for certain applications has to do with amount of shielding, impedance, and loss. ?There are experts here on the Reflector that can explain it.

On Saturday, December 7, 2024 at 12:22:15 PM EST, Joe via groups.io <toptyp19@...> wrote:

Hi Dominic,

?

White vinegar should pretty much take that off.

Afterwards, rinse with water.

I had an FS-4. Worked well.

?

73, Joe-WA9LAE.

?

?

?

?

-----Original Message-----
From: <[email protected]>
Sent: Dec 7, 2024 11:04 AM
To: <[email protected]>
Subject: [DRAKE-RADIO] FS-4 Injection Cable Questions

?

I went on a spree and bought two FS-4 units this week. Both work fine (thank goodness) but I'm curious about what looks like oxidation on this original injection cable. What would work to safely remove the buildup and clean the surface?

?

Also- why do I hear that regular RCA cables, intended for audio, are not as good as coax cables, intended for antenna connections? Is it the resistance?

?

Lastly- has anyone hooked up an FS-4 to multiple receivers at one time? I enjoy comparing reception between my R-4A, B and C receivers and would love to have one FS-4 permanently attached, maybe switching between units without having to reach back and connect/disconnect for each receiver. Any downsides to this?

?

Thanks,

Dominic

?

?

?