Hi Roger:-
Answer part by part:-
1) If the receiver was no modified, the outpot transformer for
phones es L30.- In some receivers modificated has reeplaced by one R of 100
k, and attached a tetrode tube i.eg 6v6 or 6K6 for the AF amplifier.-
2) I have many years working one R-1155 with the following tubes:
6K8 or 6J8, 6k7 in IF amplifier.- 6R7 or 6Q7 in seconddetector and 1st.
audio.- In the magic eye can be a EM34 european tube.-
3) Yes,the IF is 560 Khz. Will be adjusted warning the traps .-
4) The double triodo (V9) is CV1102, or BL63, not know reeplaced for the
american type. It is not neccesary for the amateur use.-

I hope was be useful for you.-
Excus me for my bad english

Regards
Heriberto

"Engineer" escribió en el mensaje
...
On Feb 15, 6:18 pm, "hmtavella" wrote:
Hi Roger:-
See the link: http://www.vmarsmanuals.co.uk/r1155/r1155.htm

I am also devoted R-1155A.-
Regards

Heriberto
LU6DBU
"Engineer" escribió en el
...

(snip)

Thanks Heriburto - bookmarked, and some pages printed for bench use.

-- I can't find the phones o/p transformer (designated L30) anywhere
in the chassis - not even the mounting holes!

Ah, ha..! I've found L30 from a VMARS sketch. I was looking for
something much larger, like a radio OPT. L30 is tiny and buried under
wires, etc!

One last question (Q3): Is the IF 460 KHz or 560 KHz? I've seen
reference to both numbers.

Ans: It's 560 KHz, from the VMARS website

(snip)

Do you, or does anyone else, have the equivalent commercial tube
(valve) type for the VR-types?
Here's what I have to date (hope the columns hold together):

Rec number VR-type Commercial
__________________________________________________ _
V1, V2, V4 VR99 6J8G (triode-heptode)
V3, V5, V6 VR100 KTW61 (NA type?) (RF pentode)
V7, V8 VR101 6R7, aka DH63 (dble-diode triode)
V10 (eye) VR?? ??
V9 VR?? ?? (double triode)

Thanks and cheers,
Roger

On Feb 15, 9:15*pm, "hmtavella" wrote:

Heriberto, see below in your text [interpreted to the best of my
ability]

[i]
Hi Roger:-
* * * * * * * * Answer part by part:-
* * * * *1) If the receiver was no[t] modified, the outp[u]t transformer for
phones s L30.- In some receivers modif[ied] [it is] replaced by one R of 100
k and [a terode tube is used]. e.g. 6v6 or 6K6 for the AF amplifier.

Thanks, yes, I found L30 at last! Very small and almost hidden.
A 100K resistor wil no work witha 6K6 here - too high. You need a 5K
to 4 (or 8) ohms output transformer for a speaker. I did this on my
BC348.
Also, with a 6K6 where is the audio detector?
I plan to replace it with the original 6R7 and use an external
amplifier.

* * * * *2) I have many years [of] working [on] one R-1155 *with the following tubes:
6K8 or 6J8

The converter, OK.

6k7 in IF amplifier

RF pentode, top cap grid. OK

6R7 or 6Q7 in second detector and 1st.
audio

OK, same as mine. I have both in stock.

In the magic eye can be a *EM34 european tube.

I'll look for a NA type substitue.

* * *3) Yes,the IF is 560 Khz. Will be adjusted warning the traps.

Yes, from VMARS.

4) The double triod[e] (V9) is CV1102, or BL63, [I do] not know [a] replace[ment] [in an]
american type. It is not neccesary for the amateur use.

Agreed, I won't be using it.

*I hope *was be useful for you.

Yes, very, thanks.

Excus[e] my bad [E]nglish

Don't worry, all corrected above... I hope!

Regards
Heriberto

(snip)

Cheers,
Roger

Hi Roger:-
The answering write at end of each item.-
Regards

Heriberto
LU6DBU



"Engineer" escribió en el mensaje
...
On Feb 15, 9:15 pm, "hmtavella" wrote:

Heriberto, see below in your text [interpreted to the best of my
ability]

[i]
Hi Roger:-
Answer part by part:-
1) If the receiver was no[t] modified, the outp[u]t transformer for
phones s L30.- In some receivers modif[ied] [it is] replaced by one R
of 100
k and [a terode tube is used]. e.g. 6v6 or 6K6 for the AF amplifier.

Thanks, yes, I found L30 at last! Very small and almost hidden.
A 100K resistor wil no work witha 6K6 here - too high. You need a 5K
to 4 (or 8) ohms output transformer for a speaker. I did this on my
BC348.
Also, with a 6K6 where is the audio detector? Answer: Not, the 6K6 is AF
amplifier only.-

I plan to replace it with the original 6R7 and use an external
amplifier. Answer;- OK Is a good option

2) I have many years [of] working [on] one R-1155 with the following
tubes:
6K8 or 6J8

The converter, OK.

6k7 in IF amplifier RF pentode, top cap grid. OK. Answer: And RF
Amplifier also


6R7 or 6Q7 in second detector and 1st.
audio

OK, same as mine. I have both in stock.

In the magic eye can be a EM34 european tube.

I'll look for a NA type substitue.

3) Yes,the IF is 560 Khz. Will be adjusted warning the traps.

Yes, from VMARS.

4) The double triod[e] (V9) is CV1102, or BL63, [I do] not know [a]
replace[ment] [in an]
american type. It is not neccesary for the amateur use.

Agreed, I won't be using it.

I hope was be useful for you.

Yes, very, thanks.

Excus[e] my bad [E]nglish

Don't worry, all corrected above... I hope!

Regards
Heriberto

(snip)

Cheers,
Roger