non group buy (independent) builders

[wa2t]

Hi Ron,

The IM43TS are not on AE but other places (the usual suspects) have them. If you are referring to the HFD4/5's, here you go: https://www.aliexpress.com/item/1005003560540747.html But, be forewarned, although I have studied the datasheets for both extensively, the non-latching/matching polarity gobbledy-gook in the data sheets was quite confusing, I will not be responsible for parts that do not work (although my best instincts say they are a drop-in).

73,

Robert, WA2T

[va3rr]

Ron;

I ordered my IM43GR from HONGGUIJIE Store on Aliexpress. They are the SMD type, but I know you have experience soldering this type in your ATU-10.

https://www.aliexpress.com/item/4000381 ... 4c4dzosSmg

You can also buy them from Mouser - no waiting!

[wa2t]

Ron;

I ordered my IM43GR from HONGGUIJIE Store on Aliexpress. They are the SMD type, but I know you have experience soldering this type in your ATU-10.

https://www.aliexpress.com/item/4000381 ... 4c4dzosSmg

Me too! I will have those (10) available (when they arrive) for anyone not wanting to wait for the "slow boat from China".

73,

Robert, WA2T

[ve3lbg]

:) thanks for the info, if you keep the pins straight the SMD version should be ok. it worked well on the ATU-10.

Ron VE3LBG.

[Kazu.T]

I recommend to pre-solder (tinning) the pins after straighten, before put on the PCB.
Kazu.

[Kazu.T]

For Pin header and Pin Socket, I will try
https://www.mouser.com/ProductDetail/Sa ... Bmpw%3D%3D
and
https://www.mouser.com/ProductDetail/Sa ... jz2Q%3D%3D

But since the 14pin socket is expensive, I will also order 16pin socket (then cut 2 pins off)
https://www.mouser.com/ProductDetail/Sa ... ofyw%3D%3D

Kazu. AG6NS

[R1NAO]

Good afternoon community and Manuel! Thank you very much for your work! Tell me, is it possible to replace the relay with HFD4/5L ? Another question, several positions of inventory shortage capacitors, how can they be replaced? Can release BOM file version 1.1? when there is free time, of course. And yet, why are C10, C13, C15, C17, C18, C26, C34, C39 unnecessary for soldering? For the future?

[Faraaz VK4JJ]

Good afternoon community and Manuel! Thank you very much for your work! Tell me, is it possible to replace the relay with HFD4/5L ? Another question, several positions of inventory shortage capacitors, how can they be replaced? Can release BOM file version 1.1? when there is free time, of course. And yet, why are C10, C13, C15, C17, C18, C26, C34, C39 unnecessary for soldering? For the future?

1. The HFD4/5L has been ordered for testing and evaluation. Once it arrives, and has been tested for equivalence, an announcement will be made.

2. They can be replaced with equivalent C0G/NP0 parts of suitable voltage rating.

3. Empty pads are there to allow you to put multiple caps in parallel, in case of parts shortages.

[wa2t]

Hi Group,

FWIW, the HFD4/5L is the latching version of the HFD4/5, this is not what we want. Without the L is the non-latching version. So, the desired PN is HFD4/5 (no S either, which is for the SMT version).

73,

Robert, WA2T

[DL2MAN]

No, actually Latching is what we want....
Non Latching not supported.
IM43 are Latching, SIngle Coil, 5V.
HFD4/5L might work, while noone has tested it yet.

73 Manuel; DL2MAN

[wa2t]

No, actually Latching is what we want....
Non Latching not supported.
IM43 are Latching, SIngle Coil, 5V.
HFD4/5L might work, while noone has tested it yet.

73 Manuel; DL2MAN

Yikes, I screwed up again!

[DL2MAN]

Yikes, I screwed up again!

You tried to help, and that´s all that counts !

[wa2t]

Yikes, I screwed up again!

You tried to help, and that´s all that counts !

Thank you.

[wa2t]

Hi Group,

Today as I completed assembly of my first (tr)uSDX, I tried the HFD4/5-L which I had built the RF board with. They seem to work fine, at least as far as I have tested. I getting between 2W (20m) and 3W (80m) RF output, I do not think that this has anything to do with the relays. I will be firing up a second (tr)uSDX tomorrow and will see if the power levels are similar or different (using toroids from a different source). The HFD4/5-L relays seem to be working fine (as I would expect them to).

73,

Robert, WA2T

[Dewil23]

Hello all,

Anyone here bought the kit from *Rxxxx*.com?
If so do they calculate VAT into the price at checkout? I am in the EU. Cheers.

[wa2t]

Hi Group,

Today as I completed assembly of my first (tr)uSDX, I tried the HFD4/5-L which I had built the RF board with. They seem to work fine, at least as far as I have tested. I getting between 2W (20m) and 3W (80m) RF output, I do not think that this has anything to do with the relays. I will be firing up a second (tr)uSDX tomorrow and will see if the power levels are similar or different (using toroids from a different source). The HFD4/5-L relays seem to be working fine (as I would expect them to).

73,

Robert, WA2T

China T37-2's, JUNK! Inductance is low (and so is output power as a result!). AVOID!

[wa2t]

Hi Kazu and group,

Here's a link to the short headers (3.5mm and 5mm) I bought on AE: https://www.aliexpress.com/item/32994110363.html...

Robert, WA2T

The 3.5mm (female) headers work perfectly, and the price is good.

Also, highly recommend putting the female header on the main board and the male on the RF board. The power source (main board) should have female to help avoid inadvertent shorts to ground.

73,

Robert, WA2T

[wa2t]

...1. The HFD4/5L has been ordered for testing and evaluation. Once it arrives, and has been tested for equivalence, an announcement will be made...

Hi Faraaz,

FWIW, the HFD4/5-L's are working fine for me.

73,

Robert, WA2T