Topics

RD16HHF1 5Watt PA #chat


Al Holt
 

I'm using one and have been very happy with it. I sourced mine from ThePartsPlace from k5nwa; here's their page: http://www.thepartsplace.k5nwa.com/index.php?route=product/product&product_id=61 price/shipping is reasonable. 

I run it usually with 2W output and it seems to me in transmit the total draw in on the order of ~800-900mA. I biased it using the "zero bias" method, but I can't remember if there was any difference between it and the IRF510. 

Good luck!

73

Al Holt
WD4AH


SM7ETW Jan
 

On Fri, Oct 20, 2017 at 10:45 am, Andrew Lenton wrote:
RD16HHF1
Hi Andrew
Try the search function of the forum with RD16HHF1 (I think people are forgetting this).

Jan


Cecil Bayona
 

Those parts are Prime parts from a US distributor not from eBay or China. I have never had one be bad out of the box, and I have sold 1000's.

On 10/20/2017 1:14 PM, Al Holt wrote:
I'm using one and have been very happy with it. I sourced mine from ThePartsPlace from k5nwa; here's their page: http://www.thepartsplace.k5nwa.com/index.php?route=product/product&product_id=61 price/shipping is reasonable.
I run it usually with 2W output and it seems to me in transmit the total draw in on the order of ~800-900mA. I biased it using the "zero bias" method, but I can't remember if there was any difference between it and the IRF510.
Good luck!
73
Al Holt
WD4AH


Andrew Lenton
 

Hi Jan, I have now tested all 5 I have and all of them draw 1.2Amps the moment they are in circuit with TX on, I seem to have bought a fake batch off e-Bay, I have no idea what they even are, I will put them on a transistor tester and see what it comes up with.

 

I have ordered from SDR Kits here I the UK.

 

https://www.sdr-kits.net/index.php?route=web/pages&page_id=55_55

 

Thanks for the fast response.

 

73

 

Andrew G8UUG

 

From: QRPLabs@groups.io [mailto:QRPLabs@groups.io] On Behalf Of SM7ETW Jan
Sent: 20 October 2017 19:18
To: QRPLabs@groups.io
Subject: Re: [QRPLabs] RD16HHF1 5Watt PA #chat

 

On Fri, Oct 20, 2017 at 10:45 am, Andrew Lenton wrote:

RD16HHF1

Hi Andrew
Try the search function of the forum with RD16HHF1 (I think people are forgetting this).

Jan


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Andrew Lenton
 

Thanks Buying low cost items from the USA costs me more in postage and VAT @ 20% and £8 post office service charge to collect the VAT, so turns out not worth it in the long run.


BR

Andrew

-----Original Message-----
From: QRPLabs@groups.io [mailto:QRPLabs@groups.io] On Behalf Of Cecil Bayona
Sent: 20 October 2017 21:56
To: QRPLabs@groups.io
Subject: Re: [QRPLabs] RD16HHF1 5Watt PA #chat

Those parts are Prime parts from a US distributor not from eBay or China. I have never had one be bad out of the box, and I have sold 1000's.

On 10/20/2017 1:14 PM, Al Holt wrote:
I'm using one and have been very happy with it. I sourced mine from
ThePartsPlace from k5nwa; here's their page:
http://www.thepartsplace.k5nwa.com/index.php?route=product/product&pro
duct_id=61 price/shipping is reasonable.

I run it usually with 2W output and it seems to me in transmit the
total draw in on the order of ~800-900mA. I biased it using the "zero bias"
method, but I can't remember if there was any difference between it
and the IRF510.

Good luck!

73

Al Holt
WD4AH
--
Cecil - k5nwa http://thepartsplace.k5nwa.com/




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Jan.Verduyn@...
 

As SDR-Kits we have supplied many genuine Mitsubishi transistors with zero complaints over the past 8 years.

Many people who initially buy on Ebay are disappointed with poor output and high current then buy the genuine article. They are then surprised how well the genuine Mitsubishi transistors works and annoyed how much time they have spent debugging their design or kit.
Shipping charges from the US are now very very high.  Our UK Airmail charges for a couple of transistors are  £2.50 to European Customers and £3.50 to outside Europe.  We even have a number of US Customers for that reason.

Jan G5BBL   www.SDR-Kits.net

 


Shirley Dulcey KE1L
 

It's nice to see two of the major ham-oriented suppliers of these
parts, K5NWA and SDR-Kits, here in this thread. The Mitsubishi power
FETs are not available from hobbyist-friendly distributors like
Digi-Key or Mouser, so these companies are providing a valuable
service for those of us who just want a few parts. Unlike the parts
from eBay sellers, their transistors will always be the real deal.

On Sat, Oct 21, 2017 at 4:59 AM, <Jan.Verduyn@gmail.com> wrote:
As SDR-Kits we have supplied many genuine Mitsubishi transistors with zero
complaints over the past 8 years.

Many people who initially buy on Ebay are disappointed with poor output and
high current then buy the genuine article. They are then surprised how well
the genuine Mitsubishi transistors works and annoyed how much time they have
spent debugging their design or kit.
Shipping charges from the US are now very very high. Our UK Airmail charges
for a couple of transistors are £2.50 to European Customers and £3.50 to
outside Europe. We even have a number of US Customers for that reason.

Jan G5BBL www.SDR-Kits.net




Andrew Lenton
 

Hi Jan,

 

I have just ordered some transistors from you.

 

I have no idea what transistors I got from E-bay, they area Mosfets with 3 legs, but there the similarity ends.

 

73

 

Andrew

 

PS I have ordered the 10X E12 series of capacitors NPO – C0G from mouser

 

From: QRPLabs@groups.io [mailto:QRPLabs@groups.io] On Behalf Of Jan.Verduyn@...
Sent: 21 October 2017 10:00
To: QRPLabs@groups.io
Subject: Re: [QRPLabs] RD16HHF1 5Watt PA #chat

 

As SDR-Kits we have supplied many genuine Mitsubishi transistors with zero complaints over the past 8 years.

Many people who initially buy on Ebay are disappointed with poor output and high current then buy the genuine article. They are then surprised how well the genuine Mitsubishi transistors works and annoyed how much time they have spent debugging their design or kit.
Shipping charges from the US are now very very high.  Our UK Airmail charges for a couple of transistors are  £2.50 to European Customers and £3.50 to outside Europe.  We even have a number of US Customers for that reason.

Jan G5BBL   www.SDR-Kits.net

 


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Alvey Street
 

Got 6 off RD16HHF1 from mitsubishi europe in netherlands.  They are Genuine parts.  I also obtained some from:-
www.anglia-live.com This appears to be the sole UK outlet.
There is a lot of discussion, and photo's showing how to recognise fake parts(I have been bitten as well), on the mcHF blog:-
https://github.com/df8oe/UHSDR/wiki/Technical-Specifications

The genuine devices have 2 dimples, one each side of the mitsubishi logo, at the top of the black face.  Here is a picture :-
https://uk.groups.yahoo.com/neo/groups/M0NKA-mcHF/conversations/messages/9146On

Regards Alvey

 20/10/17 23:06, Andrew Lenton wrote:

Thanks Buying low cost items  from the USA costs me more in postage and VAT @ 20% and £8 post office service charge to collect the VAT, so turns out not worth it in the long run.


BR

Andrew

-----Original Message-----
From: QRPLabs@groups.io [mailto:QRPLabs@groups.io] On Behalf Of Cecil Bayona
Sent: 20 October 2017 21:56
To: QRPLabs@groups.io
Subject: Re: [QRPLabs] RD16HHF1 5Watt PA #chat

Those parts are Prime parts from a US distributor not from eBay or China. I have never had one be bad out of the box, and I have sold 1000's.

On 10/20/2017 1:14 PM, Al Holt wrote:
I'm using one and have been very happy with it. I sourced mine from 
ThePartsPlace from k5nwa; here's their page:
http://www.thepartsplace.k5nwa.com/index.php?route=product/product&pro
duct_id=61 price/shipping is reasonable.

I run it usually with 2W output and it seems to me in transmit the 
total draw in on the order of ~800-900mA. I biased it using the "zero bias"
method, but I can't remember if there was any difference between it 
and the IRF510.

Good luck!

73

Al Holt
WD4AH

--
Cecil - k5nwa http://thepartsplace.k5nwa.com/




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