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Planar Transformer
Tim N9PUZ
I was reading an announcement about a new POE Hat for the Raspberry Pi computer board. What caught my eye was mention of it using a "planar transformer" in the circuitry instead of a wire wrapped ferrite core. The planar transformer has the windings etched onto a small PC board which is then sandwiched between two pieces of ferrite to form the transformer. I have not seen this technique before. Here is a link to the article. A picture of the transformer appears at the end. Announcing the Raspberry Pi PoE+ HAT - Raspberry Pi 73, Tim N9PUZ
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Re: Tonight's Nets
Ok Dick We’re just checking to see if your ok! 72 Johnny
On Thu, Jun 3, 2021 at 5:57 PM Dick Hammond <n0tgr2@...> wrote:
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Check out the 4SQRP website at 4sqrp.com
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Re: Tonight's Nets
Dick Hammond
N0tgr ok, trouble with Hotspot. Will return soon. Dick
On Wed, Jun 2, 2021, 9:50 PM Robert <e1dslr@...> wrote:
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What a great improvement, Yahoo just didn't work for me. Dick, n0tgr
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Tim N9PUZ
GA everyone!
Just wanted to put out a quick note regarding Moderator response time. We currently have a couple of people who are unavailable to help out, so our response to owner/moderator questions may be a bit delayed. We still expect to turn around a request within a day but in most cases we like it when we are able to respond in a more timely fashion. 4SQRP Volunteer Moderation Staff
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Tonight's Nets
Robert
40 mtrs N4MJ GLENN KO8S/4 KARL AG4CC KAREN N9AC JERRY W2SH CHAS WA4GIR JOE W5ESE SCOTT AD0YM MIKE NK8O CHARLES N0MII JEFF 80 MTRS K0LWY WALLY N4MJ GLENN NK8O CHARLES AC0BQ JOHNNY DELTA MIKE ROMEO NET N0RSR ROGER WA9BNZ BILL WG5F ED KC0PP KEITH K0BOG CHUCK K5DSJ DAVID W8NWA MIKE NK8O CHARLES K0LWY WALLY ( SAW YOU ON THE DASH BOARD BUT DIDN'T MAKE CONTACT) N0EVH JOHN AC0BQ JOHNNY N0MII JEFF WA2TOP MIKE KE0PVI RUSSELL AND A SHOUT OUT TO DICK N0TGR, HAVEN'T HEARD YOU ON THE NET FOR AWHILE HOPE YOU ARE WELL. 73'S BERT N0YJ GOOD EVENING
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Happening Now: Wednesday Evening 40 and 80 meter Nets - 06/02/2021
#cal-notice
main@4SQRP.groups.io Calendar <noreply@...>
Wednesday Evening 40 and 80 meter Nets When: Where: Organizer: jomatlock@... Description:
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HF NETS
Ge Group
Bert N0YJ will be NCS tonight. I have to attend to my Civic Duties. Cu all next week. 72 Johnny ACØBQ -- Check out the 4SQRP website at 4sqrp.com
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Event: Wednesday Evening 40 and 80 meter Nets - 06/02/2021
#cal-reminder
main@4SQRP.groups.io Calendar <noreply@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Where: Organizer: jomatlock@... Description:
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Event: Wednesday Evening 40 and 80 meter Nets - 06/02/2021
#cal-reminder
main@4SQRP.groups.io Calendar <noreply@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Where: Organizer: jomatlock@... Description:
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Re: HF test set
John Myers ll
Would like to see the dummy load 15 – 20 watts Thanks John Myers II WB9EWM
Sent from Mail for Windows 10
-- john myers II WB9EWM
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Re: 4SQRP HF Test Set
Rick Lloyd
Count me in too! Rick AA4W
On Tue, Jun 1, 2021 at 10:55 AM Louis Visconti <Kd2mu345@...> wrote:
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Re: 4SQRP HF Test Set
Louis Visconti
I would order one also. Lou, KD2MU
On 5/30/2021 10:43 PM, Johnny AC0BQ
wrote:
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Re: HF test set
David B Rogers
I am interested, also.
toggle quoted messageShow quoted text
David, WA7ZYQ C’est la vie, c’est la guerre, vive la salade de pommes de terre.
On May 31, 2021, at 3:09 PM, Johnny AC0BQ <jomatlock@...> wrote:
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Re: 4SQRP HF Test Set
Kenneth Delap
Count me in as well.
toggle quoted messageShow quoted text
Ken KX9U
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Event: Wednesday Evening 40 and 80 meter Nets - 06/02/2021
#cal-reminder
main@4SQRP.groups.io Calendar <noreply@...>
Reminder: Wednesday Evening 40 and 80 meter Nets When: Where: Organizer: jomatlock@... Description:
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Re: HF test set
James S
I'm interested in a test kit as well. Thanks, James, KK4WXA
On Mon, May 31, 2021 at 8:04 PM Gary E. Kohtala via groups.io <gary.k7ek=yahoo.com@groups.io> wrote:
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Re: HF test set
Gary - K7EK
I'd be interested too. Thanks! Best regards, Gary, K7EK ---
On Monday, May 31, 2021, 6:09:41 PM EDT, Johnny AC0BQ <jomatlock@...> wrote:
We’re not that far Tim. Still working out some details. I was just wondering if the group would be interested. The origional one is in the retired kits. No enclosure, very simple, really nice. It uses jumpers to set the options. Dummy load 10 watts, freq counter, RF volt fererence, noise bridge, Simple TDR, audio generator, single freq not sweep. 72 Have a safe holiday. Johnny On Mon, May 31, 2021 at 5:05 PM Timothy East <Timothyeast@...> wrote:
Check out the 4SQRP website at 4sqrp.com
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Re: HF test set
Curt
Johnny
Thanks for listing the original features, I need go get mine out to find the dummy load (-: See my list from earlier posting, I still think its got the most usefulness to fill in gaps that builders may lack - lc measurements, precise signal generation with 2 levels etc. Okay to keep its control spartan and less essential to provide a case, okay that may be controversial. Idea is to provide a useful tool set to the builder, I see n5ib made a major contribution. Let's see where it goes, but I sense a lower cost instrument will sell more than an exotic. 73 Curt
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Re: HF test set
Timothy East
From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of Johnny AC0BQ <jomatlock@...>
Sent: Monday, May 31, 2021 5:09:21 PM To: main@4sqrp.groups.io <main@4sqrp.groups.io> Subject: Re: [4SQRP] HF test set We’re not that far Tim.
Still working out some details.
I was just wondering if the group would be interested.
The origional one is in the retired kits.
No enclosure, very simple, really nice.
It uses jumpers to set the options.
Dummy load 10 watts, freq counter, RF volt fererence, noise bridge,
Simple TDR, audio generator, single freq not sweep.
72
Have a safe holiday.
Johnny
On Mon, May 31, 2021 at 5:05 PM Timothy East <Timothyeast@...> wrote:
Check out the 4SQRP website at
4sqrp.com
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Re: HF test set
We’re not that far Tim. Still working out some details. I was just wondering if the group would be interested. The origional one is in the retired kits. No enclosure, very simple, really nice. It uses jumpers to set the options. Dummy load 10 watts, freq counter, RF volt fererence, noise bridge, Simple TDR, audio generator, single freq not sweep. 72 Have a safe holiday. Johnny
On Mon, May 31, 2021 at 5:05 PM Timothy East <Timothyeast@...> wrote:
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Check out the 4SQRP website at 4sqrp.com
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