Re: D4D TX power

#2862

Congratulations! 600mV is the threshold to trigger the VOX. However, about 50mV is the point to overdrive NE602 per KD1JV. That's why I recommend a modification to improve IMD. Rule of thumb for acceptable IMD: Decrease the audio input until you find the RF output becomes about half.

Thanks,
Adam

D4D TX power

Fernando S

#2861

Hi!

I finally assembled my kit in a couple of hours, and I'm very happy with it.

Related to TX power, I read on the manual that needs to be set just at the minimum level that triggers the relay stably, so how much power is not being?used before reaching an overdriving level? Is there any rule of thumb to raise the power a few db when minimum stably triggering level was found?

Thanks!

Re: HT-1A magic modification

#2860

Someone asked me what is the secret key. How many keys are on the front panel? Try and it won't hurt.

Thanks,
Adam

Re: HT-1A magic modification

#2859

Press and hold a secret key and power on. Check the splash screen for HT-1a instead of HT-1A and now you are good to transmit on 10MHz band before power off.

The spur and sensitivity of 10MHz is not the best, so use it at your own risk.

Thanks,
Adam

Re: HT-1A magic modification

#2858

Yes!

73,

Don, K9DRP

HT-1A magic modification

#2857

Folks,

It is a HT-1A!

You want to know how?

Thanks,
Adam

Comparison table of FT8 capable QRP radios by JL1KRA

#2856

Folks,

It is in Japanese, but you can figure out the major spec difference among our D4D and the other two radios. Thanks to the efforts from JL1KRA.

Our D4D is a simple radio kit for greater fun building, operating and modifying.

Thanks,
Adam

Re: D4D 20m kit for sale

bleepingbeep

#2855

The kit has been sold.

Jerry AA6KI

Re: D4D 20m kit for sale

#2854

I will take it.? Is it pristine? How do I pay?

Bryan B. Brauer, PE

Consulting Engineer

bryan@...

Show quoted text

On Sun, Aug 18, 2019 at 7:22 AM bleepingbeep <bleepingbeep@...> wrote:

Thanks for that comment, Adam.? The kit looks very nice indeed, but I recently did a reality check.? Too many unbuilt kits on my hands, that's all.

Jerry AA6KI

Re: D4D low power output

#2853

Re-wound the toroid and all working perfectly :-)

Re: D4D 20m kit for sale

bleepingbeep

#2852

Thanks for that comment, Adam.? The kit looks very nice indeed, but I recently did a reality check.? Too many unbuilt kits on my hands, that's all.

Jerry AA6KI

Re: D4D 20m kit for sale

#2851

35 USD would be quite good price as I have raised shipping.

Show quoted text

On Sun, Aug 18, 2019 at 9:59 PM bleepingbeep <bleepingbeep@...> wrote:

Still available.? A guy said he would take it, but? he disappeared into the woodwork and has not responded to my email.

--

Thanks,

Adam Rong

Re: D4D 20m kit for sale

bleepingbeep

#2850

Still available.? A guy said he would take it, but? he disappeared into the woodwork and has not responded to my email.

Shipping and service policy change

#2849

Folks,

I've updated the web site to show the change of the shipping and service policy. Please view:
http://crkits.com

Thanks,
Adam

Re: D4D 20m kit for sale

Jimmy Capizzi

#2848

Is this sold?

Re: New shipping rule

#2845

Ian,

Thanks for the attention. I shipped by ePacket. The introduction is here:
ePacket: an economy International express service operated by China Postal Express&Logistics in cooperation with partner posts to ship cross-border e-commerce light-weight products weighing up to 2kg. ePacket items are injected into the light-weight network of the destination post for local delivery after customs clearance via postal channel, featuring stable end-to-end speed of 7-10 working days and preferential rate.

The tracking information is here:

If you click on the tracking history, you will know the detail:

Shipped July 23

Arrive Sydney Aug 7

Left Sydney Aug 11

Delivered at QTH in West Australia near Perth Aug 16

The total shipping time is 24 days. We can see customs delay for about 4 days. The customer ordered an ARDF receiver a few weeks ago and the shipping time is very similar, about 3 weeks.

Conclusion:

1. ePacket is still a lower priority shipping and it will wait in queue for flight. EMS will be higher priority.

2. The customer is a returning customer and placed a bigger order and was anxious to build the kit but the shipping experience is still the same.

Thanks,

Adam

Thanks,

Adam

Show quoted text

On Sat, Aug 17, 2019 at 4:43 AM <gm0sim@...> wrote:

I wonder if you will get an apology if things turn up in Oz having been delayed by their customs or just a postal screw up across there?

All the best and thanks for all the good work Adam.

regards - Ian gm0sim

--

Thanks,

Adam Rong

Re: New shipping rule

#2844

开云体育

I wonder if you will get an apology if things turn up in Oz having been delayed by their customs or just a postal screw up across there?

All the best and thanks for all the good work Adam.

regards - Ian gm0sim

Re: New shipping rule

#2843

The web site is updated. My shipping agent will get rich now, hihi.

Thanks,

Adam

Show quoted text

On Fri, Aug 16, 2019 at 11:49 PM Adam Rong via Groups.Io <rongxh=[email protected]> wrote:

Folks,

Lesson learned. This weekend I will update the web site to default EMS shipping with higher freight 20 USD. For the returning customers with good transaction experiences, you can save money by requesting regular air shipping by email in 2 hours after order placed via PayPal. The shipping cost will be based on the actual and the extra will be partially refunded.

Both EMS and regular air shippings can be tracked. However, the regular air shipping is slower and varies within 7-30 days for most of the countries.

I hope you can understand the trouble caused, in order to improve experience.

Thanks,
Adam

--

Thanks,

Adam Rong

New shipping rule

#2840

Folks,

Lesson learned. This weekend I will update the web site to default EMS shipping with higher freight 20 USD. For the returning customers with good transaction experiences, you can save money by requesting regular air shipping by email in 2 hours after order placed via PayPal. The shipping cost will be based on the actual and the extra will be partially refunded.

Both EMS and regular air shippings can be tracked. However, the regular air shipping is slower and varies within 7-30 days for most of the countries.

I hope you can understand the trouble caused, in order to improve experience.

Thanks,
Adam

Re: D4D low power output

#2839

开云体育

It happens. One of our domestic customers also did like that. Enjoy the QSO then.

Thanks,

Adam

在 2019年8月16日，下午8:37，Nicholas Triantafyllou <nicholas.triantafyllou@...> 写道：

Show quoted text

Thanks Adam for getting back so quickly. I have just realised what I have done wrong. When winding the transformer I did connect the middle tap incorrectly!?