Re: S-40B - What is the socket on the back for?
Correction: the S-77 is AC/DC of the S-40B .? The socket is to run the receiver from batteries.? I did not look at the schematic to see how it's arranged.? On the AC only version the filaments are in parallel and run off? 6 volt battery while a seperate B battery supplies the plate voltage.? The filaments on the S-77 are in series so, presumably everything can run off a single battery in the absence of a DC main supply. So, the S-77 is really a three-way receiver: AC, DC and batteries.
toggle quoted message
Show quoted text
-------- Original message -------- From: don Root <drootofallevil@...> Date: 1/10/23 5:36 PM (GMT-08:00) Subject: Re: [HallicraftersRadios] S-40B - What is the socket on the back for?
On Tue, Jan 10, 2023 at 03:36 PM, Richard Knoppow wrote:
Marine version has an AC/DC power supply to operate on ships which have only DC mains.? The S-77 is the marine version of the S-40
=== end quote begin comment===== hi Richard again ,and others i don't understand your wording ... I can see that the S-40 [no B] has an octal socket? not a supply? to allow it to be connected to some? DC from somewhere, rather than AC I can also see the S-77A has an octal socket? for? asimilar purpose, and? voltages=? while the normal plug can work on AC or DC. ?if the octal socket scheme justifies "marine"? ok .. but .hold on... my Osterman's calls the s-51 [sea arer] a "marine band" receiver and then list band 1 as .132 to .405 Mcees--- looks like "marine" to me. The next listing is the S-52? also called "marine band" but bands are typical of most SW receivers, and don't look "marine" to me.
halli listing in catalog?? saysS-51 Marine ReceiverRugged and specially constructed for dependable seaor air use. Range 132 KC to 13 MC covers all impor-tant channels. Fixed frequency operation possible onthree pre-tuned channels; facilitates switching fre-quency and/or standing guard. Built-in PM speaker.CONTROLS: Band Selector ¡ª 132-405 KC, 485-1530KC, 1450-4550 KC, 4.2-13.0 MC, plus 3 fixed freq. posi-tions in 200-300 KC and 2-3 MC range; RF gain,Volu me, C W/A M, Range Filter, ANL, Tuning, 3 posi-tion Tone, C W Pitch, Rec./Standby. Gray steel cab-inet: 18 % by 9 by 9% in. deep; piano hinge top.Doublet or single wire antenna. Phone jack. Socket for6, 12, or 32 v. vibrapack. 105-125 v. 50-60 cycle AC or DC.9 TUBES PLUS RECTIFIER: 6SS7 RF Amp., 7A8Cony., two 6SS7's IF Amps., 7C6 Det., 35L6 or 6V6Output, 7A6 Noise Li miter, 6SS7 BFO, 35Z5 Rectifier.S-51. Ship. wt. 31 lbs Amateur Net $149.50Vibrapack for 6, 12, or 32 v. operation
|
Hi Walt! ?? Here's the repair note I have for my own SR-400 concerning T3:
21.?? Thermal intermittent internal disc ceramic caps in T3.?? Replaced with 82 pF mica caps internally; 10 pF mica caps externally to equal approximately 90 pF original value.
? T3 tuned up nicely after this change, so 90 to 92 pF must be pretty close.?? I wasn't able to find a 90 pF capacitor and there wasn't room in the can for two caps on each side, so I mounted the two 82 pF internally and bridged the can terminals under the chassis with two 10 pF.?? I assumed that I might have to tailor this value a bit and so the under-chassis location of these caps seemed OK to me.?? As it turned out, T3 aligned just fine; no change in value of the smaller caps was required. Good Luck, -- Jim T. KB6GM
|
Re: S-40B - What is the socket on the back for?
On Tue, Jan 10, 2023 at 03:38 PM, KW4H wrote:
Well, so the plot thickens.? I have an S-40B here under the bench for eventual restoration and pulled it out and had a closer look.? Attached is a photo of where the power cord enters and the covered-up opening to the right of it.? Engraved in the metal below the opening is ¡°Standby¡±.? Hmmm!? Still, that covered-up jack is in the location where a DC power input socked USED to be on the S-40.? It would appear that, for the S-40B, this was intended (if designed into the radio) to be for a remote standby switch.? I have never seen a S-40B with that feature wired in.
?
yes Steve, but this is Halligan's? gymnastics, so musterys never end I am just replying to mention whati thought i said before... that picture from ??? up there^^ shows an ac outlet in that spot with screws, and has standby below 73 don VA3DRL
|
Re: S-40B - What is the socket on the back for?
On Tue, Jan 10, 2023 at 03:36 PM, Richard Knoppow wrote:
Marine version has an AC/DC power supply to operate on ships which have only DC mains.? The S-77 is the marine version of the S-40
=== end quote begin comment===== hi Richard again ,and others i don't understand your wording ... I can see that the S-40 [no B] has an octal socket? not a supply? to allow it to be connected to some? DC from somewhere, rather than AC I can also see the S-77A has an octal socket? for? asimilar purpose, and? voltages=? while the normal plug can work on AC or DC. ?if the octal socket scheme justifies "marine"? ok .. but .hold on... my Osterman's calls the s-51 [sea arer] a "marine band" receiver and then list band 1 as .132 to .405 Mcees--- looks like "marine" to me. The next listing is the S-52? also called "marine band" but bands are typical of most SW receivers, and don't look "marine" to me.
halli listing in catalog?? saysS-51 Marine ReceiverRugged and specially constructed for dependable seaor air use. Range 132 KC to 13 MC covers all impor-tant channels. Fixed frequency operation possible onthree pre-tuned channels; facilitates switching fre-quency and/or standing guard. Built-in PM speaker.CONTROLS: Band Selector ¡ª 132-405 KC, 485-1530KC, 1450-4550 KC, 4.2-13.0 MC, plus 3 fixed freq. posi-tions in 200-300 KC and 2-3 MC range; RF gain,Volu me, C W/A M, Range Filter, ANL, Tuning, 3 posi-tion Tone, C W Pitch, Rec./Standby. Gray steel cab-inet: 18 % by 9 by 9% in. deep; piano hinge top.Doublet or single wire antenna. Phone jack. Socket for6, 12, or 32 v. vibrapack. 105-125 v. 50-60 cycle AC or DC.9 TUBES PLUS RECTIFIER: 6SS7 RF Amp., 7A8Cony., two 6SS7's IF Amps., 7C6 Det., 35L6 or 6V6Output, 7A6 Noise Li miter, 6SS7 BFO, 35Z5 Rectifier.S-51. Ship. wt. 31 lbs Amateur Net $149.50Vibrapack for 6, 12, or 32 v. operation $22.50-52 Communications ReceiverExactly like the S-40A except designed for AC or DCoperation. 7 Tubes plus rectifier and ballast tube; RFand IF tubes like S-40A; then 6H6 Det., 6SC7 and AFAmp., 25L6 Output, 25Z6GT Rect., and Ballast.S-52. Ship. wt. 30 lbs Amateur Net $79.95
this listing says nothing about "marine" or having optional dc power packs.
from a quick look, the s-52 power source variations are not as flexible as the s-51.. but somewhere there must be some fine print.
so sometime is need to see what manuals indicate ..
so i remain for now unsure what to take from it all.
enufff
73? don VA3DRL
|
Re: general question re polarized ac plugs on receivers as shipped originally
Back in the time frame of 1974-75 power tools for CA had to have polarized plug plus double insulated. Most US brands made the switch instead of running 2 production lines. One thing that drives me crazy in old houses was you never knew if the black or white wire was HOT! Then some one installs a modern grounded outlet but no ground wire GRRRR.
|
Re: S-40B - What is the socket on the back for?
Interesting. The S-52 and the S-77.? They were the Acey'Deucy versions of the S-40 and S-40B.? Regarding the 2 prong ac plug looking accessory socket on the rear panel, my S-40B has it but no schematic, to include Run 3 shows this plug. Other S-40 schematics show the external power octal and the sometimes 5 pin S-meter accessory plug. I will unforseen my B model and see where the mystery plug goes. As a novice in the late 50's, I used an S-40B and muted it via a Dow-Key relay. It may be in parallel with the Stby switch. Very common.
Jeep K3HVG
On 01/10/2023 6:36 PM Richard Knoppow <1oldlens1@...> wrote:
Marine version has an AC/DC power supply to operate on ships which have only DC mains.? The S-77 is the marine version of the S-40
-------- Original message --------
From: don Root <drootofallevil@...>
Date: 1/10/23 3:09 PM (GMT-08:00)
Subject: Re: [HallicraftersRadios] S-40B - What is the socket on the back for?
On Tue, Jan 10, 2023 at 05:25 AM, KW4H wrote:
I stand corrected on something ¨C there are interesting notes on this in the Osterman book.? Actually, there were AC/DC variants of the S-40B ¨C they were the S-77 and S-77A.? There was also a SC-77A which is the same as the S-77A, but manufactured in Canada.? This wasn¡¯t the first time Hallicrafters produced an ac/dc/marine version ¨C the S-52 was the AC-DC version of the S-40.? SO ¨C the DC outlet on the rear of the S-40B is for DC power for the marine version (otherwise, the chassis are identical).? Now -- if someone has a S-40B WITH a DC power receptacle installed, then that¡¯s a stumper.? The hole for the DC supply was there for the variants.
hi Steve, others too
I am reading your comment Steve, with interest, and ran into "marine version" and wonder, in the ongoing context, what "marine version" implies. Should it be obvious, and I am just to slow??.. I have scratched my head over this and get only little bugs!!HiHi
73?? always wanting a bit of etucation ...don VA3DRL
|
Re: general question re polarized ac plugs on receivers as shipped originally
On Tue, Jan 10, 2023 at 02:52 PM, Richard Knoppow wrote:
I am old enough to remember. Few? homes had polarized sockets when these receivers were new.?
The 0.01 uF capacitor was to bypass RF on the incoming power..............
hi richard ,others too Re; The 0.01 uF capacitor was to bypass RF on the incoming power. well ok it this it true much of the time, any RF incoming? on neutral will be RF connected to chassis so the chassis can vibrate with RF too.? the reversed plug-in? will? take Rf on the hot wire to the chassis.? Light dimmers have a heyday. at least with this capacitor your local BCB station can ride in on the power lines, with no need for an antenna. Re; Three-wire cords won't prevent shocks,? ?depends on the house wiring plus what exactly is "ground"?
I agree, is your house wiring is other than "by code" since say 1975 it might be quite shocking, but if you follow the post 197* rules, the polarization inherent in proper 3-wire stuff will save you in newer equipment, and might save you while doodling with old metal cabinet, transformered Hallis ..... if you first? watch the "polarization",? then maybe add the AC power supply ground, but don't forget what you are going to do with the antenna TB ground wire.
there is too much variation in AC/DC sets to say alot, but for most just AC/DC the chassis voltage is closer to one AC wire or the other so always plug it in with the chassis close to ground... and keep doing that: just flatten and widen the right prong on the plug. and use a GFCI too
worn out again!
73?? don VA3DRL
|
Re: S-40B - What is the socket on the back for?
Well, so the plot thickens.? I have an S-40B here under the bench for eventual restoration and pulled it out and had a closer look.? Attached is a photo of where the power cord enters and the covered-up opening to the right of it.? Engraved in the metal below the opening is ¡°Standby¡±.? Hmmm!? Still, that covered-up jack is in the location where a DC power input socked USED to be on the S-40.? It would appear that, for the S-40B, this was intended (if designed into the radio) to be for a remote standby switch.? I have never seen a S-40B with that feature wired in. ? 73 ¨C Steve, KW4H ? Craig and Steve mainly
here I am still confused as usual but ,back up top Craig seemed to ask about a two prong socket which perhaps we can also see on Jeep's picture, and Steve replied that it was a "DC power connection"
my thought is that the S-40 had an octal socket to allow for "a DC power connection" which was abandoned in the B version.
so am puzzled about that.
Craig mentions having an S-40B as well as an SC-40B; I wonder if the latter is a "U" version perhaps not/poorly marked, but with a large nameplate frequency? range, and maybe voltage too??
73?? don?? VA3DRL
=== pasted-in quoted reference=== I CANT GET THE QUOTE TO WORK NOW= That was a DC power connection, which was eliminated in the S-40B.? Hallicrafters covered up the outlet with a metal plate. ? 73 ¨C Steve, KW4H ? Subject: [HallicraftersRadios] S-40B - What is the socket on the back for? I have an S-40B that I picked up recently and am currently refurbishing it.
I am wondering what the two-prong outlet, to the right of the power cord, is.? My SC-40B does not have this, only a plate riveted over the hole.
Thanks.
Craig, VE3OP
====end quote=== and reply==
|
Re: S-40B - What is the socket on the back for?
Marine version has an AC/DC power supply to operate on ships which have only DC mains.? The S-77 is the marine version of the S-40
toggle quoted message
Show quoted text
-------- Original message -------- From: don Root <drootofallevil@...> Date: 1/10/23 3:09 PM (GMT-08:00) Subject: Re: [HallicraftersRadios] S-40B - What is the socket on the back for?
On Tue, Jan 10, 2023 at 05:25 AM, KW4H wrote:
I stand corrected on something ¨C there are interesting notes on this in the Osterman book.? Actually, there were AC/DC variants of the S-40B ¨C they were the S-77 and S-77A.? There was also a SC-77A which is the same as the S-77A, but manufactured in Canada.? This wasn¡¯t the first time Hallicrafters produced an ac/dc/marine version ¨C the S-52 was the AC-DC version of the S-40.? SO ¨C the DC outlet on the rear of the S-40B is for DC power for the marine version (otherwise, the chassis are identical).? Now -- if someone has a S-40B WITH a DC power receptacle installed, then that¡¯s a stumper.? The hole for the DC supply was there for the variants.
hi Steve, others too I am reading your comment Steve, with interest, and ran into "marine version" and wonder, in the ongoing context, what "marine version" implies. Should it be obvious, and I am just to slow??.. I have scratched my head over this and get only little bugs!!HiHi 73?? always wanting a bit of etucation ...don VA3DRL
|
Re: S-40B - What is the socket on the back for?
On Tue, Jan 10, 2023 at 05:25 AM, KW4H wrote:
I stand corrected on something ¨C there are interesting notes on this in the Osterman book.? Actually, there were AC/DC variants of the S-40B ¨C they were the S-77 and S-77A.? There was also a SC-77A which is the same as the S-77A, but manufactured in Canada.? This wasn¡¯t the first time Hallicrafters produced an ac/dc/marine version ¨C the S-52 was the AC-DC version of the S-40.? SO ¨C the DC outlet on the rear of the S-40B is for DC power for the marine version (otherwise, the chassis are identical).? Now -- if someone has a S-40B WITH a DC power receptacle installed, then that¡¯s a stumper.? The hole for the DC supply was there for the variants.
hi Steve, others too I am reading your comment Steve, with interest, and ran into "marine version" and wonder, in the ongoing context, what "marine version" implies. Should it be obvious, and I am just to slow??.. I have scratched my head over this and get only little bugs!!HiHi 73?? always wanting a bit of etucation ...don VA3DRL
|
Re: general question re polarized ac plugs on receivers as shipped originally
I am old enough to remember. Few? homes had polarized sockets when these receivers were new.? The 0.01 uF capacitor was to bypass RF on the incoming power. Goes from the unswitched side of the line to chassis ground.? The power cord goes to the power transformer primary so, except for the cap it's floating, polarity doesn't matter.? If the cap will always pass some AC but at 60Hz it's very little? unless it's very leaky.? On some receivers with metal cabinets you can feel a slight buzz when you run your fingers over it. This is from the small amount af AC causing the skin to vibrate.?? Removing the bypass cap will usually stop it but insulation leakage in the power transformer can also cause it. ? AC/DC receivers will not work at all on DC if the line cord is reversed.? Some will suggest reversing the plug if there is excessive hum on AC. Worth trying both ways. ? Three-wire cords won't prevent shocks,? ?depends on the house wiring plus what exactly is "ground"?
toggle quoted message
Show quoted text
-------- Original message -------- From: "D. Platt" <jeepp@...> Date: 1/10/23 1:08 PM (GMT-08:00) Subject: Re: [HallicraftersRadios] general question re polarized ac plugs on receivers as shipped originally
Hear!? Hear!
K3HVG
On 01/10/2023 3:49 PM don Root <drootofallevil@...> wrote:
On Tue, Jan 10, 2023 at 03:21 AM, Craig Delmage wrote:
Makes me wonder what the internal electrical situation was when you plugged it in one way, versus the other.
===END QUOTE,? BEGIN COMMENT====
as I tried to finish this comment, I am reminded that what triggered this question and this specific comment? was the S-40? topic so this is specifically for the S-40 model and many others ?
these comments are addressed to those who are not too familiar with electronic circuits and may have similar questions ....?
If that "cap wired from the plug to the chassis" did not exist, there would in theory be no difference if the AC plug is reversed other than for the transformer primary and the power switch and so only a very small concern,
But given that the cap exist:
- [call it normal desired] the incoming AC hot wire gets connected to the switch while the neutral? wire gets connected to the cap which tends to take the chassis to neutral/real ground?? .. and the condition of the cap hardly matters, so only little concern.
- [call it reversed] the incoming AC neutral wire gets connected to the switch and the hot wire gets connected to the cap which tends to take the chassis to 117 VAC? [the? chassis is going to tend to float] ??
- under new-capacitor conditions, the current thru the cap will not be much, and will easily be swamped by the ground wire? on the antenna TB? if it is connected but otherwise could give you a tingle if your feet are "grounded"
- ... but if that cap leaks/shorts the cap will strongly tend? to take the chassis to 117 VAC ... it will be a fight between the 117AC and any antenna TB ground[possible smoke etc], but if the chassis is not grounded? and you touch the cabinet/chassis? it all depends on how isolated you are from ground at that time, and how dry your skin is too.
BTW: this is why I like to see the neutral always connected to that capacitor and the hot to that switch, so always plug it in that way, or just make the plug polarized to prevent this problematic situation, but then as i must have babbled elsewhere; why is the cap there? a real question; not yet rhetoric.
73 don? VA3DRL
|
Re: general question re polarized ac plugs on receivers as shipped originally
On Tue, Jan 10, 2023 at 01:27 PM, dcc98_05 wrote:
Sometime around 1972-1973 before 3 prong outlets were required by the NEC. Working on old houses with 2 prong outlet never recall seeing a polarized outlet.
David I am up north of 49 where things are similar, but not the exact same. I believe we had, and required 3 prong polarized outlets before 1955, but only for Outside, Garages, Laundry.... so the outlets with polarization were available here, but most of the wiring and outlets were 2 wire. I recall that we went from 2-wire non-polarized to 3-wire inherently polarized; in the 60's, we had to have lots of "cheaters"! ? ?? I don't recall any a 2-wire polarized outlets, for some time; just 3 wire. All extensions were either 3 wire, or 2wire, non-polarized; only later did we see 2-wire polarized. At any time, Our "National"electrical code perhaps did not require only 3-wire, but whoever was in charge of local approval might have been under tighter control ,but likely universal requirements dragged on in a similar way as yours. Also, here the CSA set the rules for appliances, cords, house wire etc so, the two bodies had to be in-step. ? 73 don? VA3DRL
|
Re: S-40B - What is the socket on the back for?
Craig and Steve mainly here I am still confused as usual but ,back up top Craig seemed to ask about a two prong socket which perhaps we can also see on Jeep's picture, and Steve replied that it was a "DC power connection" my thought is that the S-40 had an octal socket to allow for "a DC power connection" which was abandoned in the B version. so am puzzled about that. Craig mentions having an S-40B as well as an SC-40B; I wonder if the latter is a "U" version perhaps not/poorly marked, but with a large nameplate frequency? range, and maybe voltage too?? 73?? don?? VA3DRL === pasted-in quoted reference=== I CANT GET THE QUOTE TO WORK NOW=
That was a DC power connection, which was eliminated in the S-40B.? Hallicrafters covered up the outlet with a metal plate.
?
73 ¨C Steve, KW4H
?
Subject: [HallicraftersRadios] S-40B - What is the socket on the back for?
I have an S-40B that I picked up recently and am currently refurbishing it.
I am wondering what the two-prong outlet, to the right of the power cord, is.? My SC-40B does not have this, only a plate riveted over the hole.
Thanks.
Craig, VE3OP
====end quote=== and reply==
|
Re: general question re polarized ac plugs on receivers as shipped originally
Sometime around 1972-1973 before 3 prong outlets were required by the NEC. Working on old houses with 2 prong outlet never recall seeing a polarized outlet. David
|
Re: general question re polarized ac plugs on receivers as shipped originally
toggle quoted message
Show quoted text
On 01/10/2023 3:49 PM don Root <drootofallevil@...> wrote:
On Tue, Jan 10, 2023 at 03:21 AM, Craig Delmage wrote:
Makes me wonder what the internal electrical situation was when you plugged it in one way, versus the other.
===END QUOTE,? BEGIN COMMENT====
as I tried to finish this comment, I am reminded that what triggered this question and this specific comment? was the S-40? topic so this is specifically for the S-40 model and many others ?
these comments are addressed to those who are not too familiar with electronic circuits and may have similar questions ....?
If that "cap wired from the plug to the chassis" did not exist, there would in theory be no difference if the AC plug is reversed other than for the transformer primary and the power switch and so only a very small concern,
But given that the cap exist:
- [call it normal desired] the incoming AC hot wire gets connected to the switch while the neutral? wire gets connected to the cap which tends to take the chassis to neutral/real ground?? .. and the condition of the cap hardly matters, so only little concern.
- [call it reversed] the incoming AC neutral wire gets connected to the switch and the hot wire gets connected to the cap which tends to take the chassis to 117 VAC? [the? chassis is going to tend to float] ??
- under new-capacitor conditions, the current thru the cap will not be much, and will easily be swamped by the ground wire? on the antenna TB? if it is connected but otherwise could give you a tingle if your feet are "grounded"
- ... but if that cap leaks/shorts the cap will strongly tend? to take the chassis to 117 VAC ... it will be a fight between the 117AC and any antenna TB ground[possible smoke etc], but if the chassis is not grounded? and you touch the cabinet/chassis? it all depends on how isolated you are from ground at that time, and how dry your skin is too.
BTW: this is why I like to see the neutral always connected to that capacitor and the hot to that switch, so always plug it in that way, or just make the plug polarized to prevent this problematic situation, but then as i must have babbled elsewhere; why is the cap there? a real question; not yet rhetoric.
73 don? VA3DRL
|
Re: general question re polarized ac plugs on receivers as shipped originally
On Tue, Jan 10, 2023 at 03:21 AM, Craig Delmage wrote:
Makes me wonder what the internal electrical situation was when you plugged it in one way, versus the other.
===END QUOTE,? BEGIN COMMENT==== as I tried to finish this comment, I am reminded that what triggered this question and this specific comment? was the S-40? topic so this is specifically for the S-40 model and many others ? these comments are addressed to those who are not too familiar with electronic circuits and may have similar questions ....? If that "cap wired from the plug to the chassis" did not exist, there would in theory be no difference if the AC plug is reversed other than for the transformer primary and the power switch and so only a very small concern, But given that the cap exist:
- [call it normal desired] the incoming AC hot wire gets connected to the switch while the neutral? wire gets connected to the cap which tends to take the chassis to neutral/real ground?? .. and the condition of the cap hardly matters, so only little concern.
- [call it reversed] the incoming AC neutral wire gets connected to the switch and the hot wire gets connected to the cap which tends to take the chassis to 117 VAC? [the? chassis is going to tend to float] ??
- under new-capacitor conditions, the current thru the cap will not be much, and will easily be swamped by the ground wire? on the antenna TB? if it is connected but otherwise could give you a tingle if your feet are "grounded"
- ... but if that cap leaks/shorts the cap will strongly tend? to take the chassis to 117 VAC ... it will be a fight between the 117AC and any antenna TB ground[possible smoke etc], but if the chassis is not grounded? and you touch the cabinet/chassis? it all depends on how isolated you are from ground at that time, and how dry your skin is too.
BTW: this is why I like to see the neutral always connected to that capacitor and the hot to that switch, so always plug it in that way, or just make the plug polarized to prevent this problematic situation, but then as i must have babbled elsewhere; why is the cap there? a real question; not yet rhetoric. 73 don? VA3DRL
|
Hi Dan, I have an SX-25 I was planning to part out.? Please let me know what else you may possibly need.
'73, Randy WN9D
|
Re: S-40B - What is the socket on the back for?
I stand corrected on something ¨C there are interesting notes on this in the Osterman book.? Actually, there were AC/DC variants of the S-40B ¨C they were the S-77 and S-77A.? There was also a SC-77A which is the same as the S-77A, but manufactured in Canada.? This wasn¡¯t the first time Hallicrafters produced an ac/dc/marine version ¨C the S-52 was the AC-DC version of the S-40.? SO ¨C the DC outlet on the rear of the S-40B is for DC power for the marine version (otherwise, the chassis are identical).? Now -- if someone has a S-40B WITH a DC power receptacle installed, then that¡¯s a stumper.? The hole for the DC supply was there for the variants. ? 73 ¨C Steve, KW4H ? Steve - my S-40B has the DC plug and connected wiring running around the receiver.?
|
Re: S-40B - What is the socket on the back for?
|
Re: S-40B - What is the socket on the back for?
Forgot to mention... if you're going to use a grommet, a small, very tight tye-wrap close to the exit hole will keep the cord from moving.? K3HVG
On 01/10/2023 6:13 AM Craig Delmage <cddgeneral@...> wrote:
I am going with a rubber grommet for the hole, rather than drilling the original hole out. Interesting yours has a significant amount of extra label glue on the back, like mine. Were they EVER sloppy at the factory.
|
don Root