Chris

I do not have any spare amps but I think G7NKS/JIM has some units, maybe you could ask him.

If you look at the Decca 5501 info on the web you could build a copy which would be very reliable. It uses a bridge cct which most commercial manufacturers favour compared to push pull etc

See attachment of a similar amp that would be simple to build and reliable and give around 1Kw output. It is a standard cct nothing special about it. Where it says OUT1 and OUT2 use a series resonant cct for the freq of interest, similar to the Decca cct then a matching ferrite transformer to match the FET 8 ohms approx to 50 ohms.

 

 

From: Chris Wilson [email protected] [rsgb_lf_group]

Sent: Thursday, February 8, 2018 3:54 PM

To: [email protected] [rsgb_lf_group]

Cc: [email protected]

Subject: Re: [rsgb_lf_group] Fw:

 

 

Hello [email protected],

Thursday, February 8, 2018, 3:29:21 PM, you wrote:

are there any of the old Decca units still available anywhere Mal? I have
an Ebay watch on them, for years in fact, never seen one.... Nice set
up! Shame my TS-590 got zapped it was a good transceiver.

>
> MF/630M GROUP
>
> See attached picture of my 474.2 Khz equipment
>
> TS590 TRANSCEIVER/MODIFIED DECCA 5501 SINGLE UNIT AMPLIFIEER/'SCOPE to
> monitor outgoing signal.
> apeed,
> it was a good transceiver.
>
> Anternna is an INV L 1/4 WAVE ON 630 METRES UP 100 feet approx vertical and
> the rest horizontal. Antenna used for TX/RX with alt RX antenna, my 160m INV
> L 1/4 WAVE UP 80 feet vertical and rest horizontal and resonated for
> 630metres when in use
> My QTH is in the countryside and antennas are in a field away from
> environmental local noise.
> I have a selection of HF antennas for all other HF bands selected as
> required.
>
> 73 de mal/g3kev/io94sh

--
Best regards,
Chris mailto:[email protected]

__._,_.___

---

Posted by: Chris Wilson <[email protected]>

---

Reply via web post

•

Reply to sender

•

Reply to group

•

Start a new topic

•

Messages in this topic (2)

Visit Your Group

• Privacy • Unsubscribe • Terms of Use

.

__,_._,___